Rainbow Vacuum Models History

This page provides a detailed and historical look into the different Rainbow vacuum models. We have consolidated information typically found scattered among a myriad of internet pages, groups, forums, blogs, and our knowledge and experience into one convenient location.

How long should a vacuum cleaner last? The Rainbow is legendary with its durability. The term "built like a tank" comes up in many discussions.

NOTE: We created this page for the models that were/are distributed in the United States.

Not sure which Rainbow you own? Use our Which Rainbow Do I Have? guide, or start with where to find your model and serial number, then use the table below.

Find your model, serial number and date code

• The model and serial number are on a label (plate). Where it is depends on the model:

• Beside the serial number (before or after it) is a three-digit date code: the quarter, then the year. 221 = second quarter of 2021; 190 = first quarter of 1990.
• Serial numbers are normally 8 digits; a longer number usually has the date code attached.
• The power nozzle has its own serial number and date code, on the silver sticker under the head.
• Type 12 = 120 volt, Type 23 = 240 volt; a D4B is the Canadian D4.
• Still not sure? Text a photo to 301-791-9671.

Which attachments go with my Rainbow?

Rainbow Vacuum RHCS19 / SRX

At a glance

• Made August 2019 to today; serial numbers 22000001 and up
• Goes with: PN3 power nozzle, AquaMate AM-12, RainbowMate RM-12, RainJet RJ-12 and its own SRX MiniJet
• Water pan: 2-quart (item T1029) with an oval small opening; the unit says SRX on the sides
• HEPA filter: item T1189

The SRX is a new design compared to the E2 Type 12 system. Rexair added a 4 speed motor for cleaning the air to vacuuming thick carpet and an all-new motor that increased airflow by 30%. A timer was also added to turn itself off after 30, 60, or 90 minutes when running as an air cleaner.

Other improvements include a lower profile so the unit does not tip over and an improved cord wrap. The motor was designed for 24/7 operation, so using it as a full-time air cleaner is not a concern for additional wear.

The buttons are now a soft touch and also forward-facing to easily switch between functions. While the 2nd version Gold series started the quiet option, the SRX has lowered the noise output even further.

Rainbow Vacuum Power Nozzle PN3 / SRX

At a glance

• Version 1: serial numbers 42000000 to 42999999, from August 2019 to October 2022
• Version 2: serial numbers 43000000 and up, from October 2022; uses the same side-belt motor as the PN-12 version 2 (item R15403)
• Version 1 cover and pivot arm kit T1241K replaces the blue upright lock button

Version 1Version 2Same as the SRX Rainbow, the SRX Power nozzle is a complete change from all before it. The brush roll is now stainless steel with replaceable brush strips. Rexair has also brought back the adjustable air vent system that was used on the R-series power nozzles. It was a proven design and has finally made a comeback. This feature helps redirect airflow for when a thicker carpet restricts air movement from the bottom. Vents are opened from the top to keep airflow moving for maximum cleaning performance.

The hose connection is a significant improvement and uses a magnetic snap function to create a super easy and quick attachment. The hose handle also includes a soft-touch material that helps keep the same comfort level even during prolonged use.

Rainbow Vacuum E2 Type 12 / Black

At a glance

• Version 1: serial numbers 20200001 to 20479999, March 10, 2011 to about September 2012
• Version 2 (LED on the faceplate, late 2012): serial numbers 20480000 to 22000000, about September 2012 to August 2019
• Two speeds, HI and LOW; HEPA filter R12179
• Goes with: PN-12, AquaMate AM-12 (Black), RainbowMate RM-12 (Black), RainJet RJ-12, MiniJet MJ-12
• Self-docking electrified wand R16710; a spring-loaded wand receptacle was added in February 2019

There are two versions of the E2 Type 12 Black series Rainbow. The only difference between Version 1 and Version 2 is that an LED light was added to the front of the faceplate in late 2012 for troubleshooting purposes.

Though this model has a new external appearance, it is structurally similar to the E2 Type 12 Silver.

There are only two differences between the Black and Silver Rainbows. One, new blue and white LED lights to shine into the water pan providing a nice visual effect and letting you see the dirt and debris so the water pan can get changed before the water is too thick. Two, they have removed the collapsible arms for the cord wrap for quick cord removal, and now the user must remove the cord manually.

Rainbow Vacuum Power Nozzle PN-12 / Black

At a glance

• Version 1 (center belt): serial numbers 40000001 to 40249999, from March 10, 2011; motor R15051
• Version 2 (side belt): serial numbers 40250000 to 41999999, from about September 2012; motor R15403, belt R15364

There are two versions of the PN-12 Black power nozzle, and you are able to distinguish between the two by the location of the belt.

Version 1 has the belt located in the center of the brush roll, and Version 2 has the belt located on the side of the brush roll. Version 2 is considered an improvement because they removed the center belt from the airflow path. Moving the belt to the side could result in issues with edge cleaning, but side edge brushes spin to overcome any additional problems caused by this transition.

Rainbow Vacuum AquaMate AM-12 (IV) / Black

At a glance

• Serial numbers 30000001 and up, from March 10, 2011
• Also the AquaMate for the SRX

Currently, there is only one version of this AquaMate, which is explicitly designed to work with the Black model Rainbow. The only difference between the AM-12 IV and the previous AquaMate III are the new connections that fit the Black series hose connection.

The AquaMate turns your Rainbow into a carpet shampooer in minutes. It takes the place of the power nozzle, so setup is quick and easy. Its wide-angle revolving brush roll works the natural cleaning power of water and AquaMate Carpet Cleaner solution deep into the carpet fibers, lifting the grease, oil, spill and pet stains a vacuum cannot reach, reconditioning and deodorizing the carpet, which then dries quickly. It comes complete with a bottle of shampoo and an owner's manual, and it is the AquaMate for the SRX as well.

After each use, empty the solution container, fill it with hot water and run it through the wash cycle to flush the lines. That keeps dried solution from clogging them.

Shop and learn more: AM-12 Black parts · Owner's manuals

Rainbow Vacuum RainbowMate RM-12 / Black

At a glance

• Version 1: March 10, 2011 to June 1, 2017; version 2: June 1, 2017 to August 2019 (dates only; no serial numbers are stamped)
• Has no power cord of its own (the Silver RM-12 does)
• Also the RainbowMate for the SRX

The Black series RainbowMate has two versions. On June 1st, 2017, the second version was introduced that included an LED light much like the power nozzle and a pivot arm that made cleaning at different angles much more accessible.

The first version is precisely the same as the Silver series RainbowMate, and the only difference is that this has the correct connections to work with the self-docking wands that come standard with the "Black" version Rainbow.

Why own one? Stairs, upholstered chairs and car interiors all get faster and easier, and the RainbowMate adds the cleaning power of its own internal motor to your Rainbow's. Version 2 attaches to the SRX or the Black series and adds an LED light bar for dark areas and a pivot arm so you can work at any angle that is comfortable. It will also work with a Silver series Rainbow if you add the R14963 Self Docking Adaptor.

Shop and learn more: RM-12 Black parts · Owner's manuals

Rainbow Vacuum RainJet RJ-12 / Black

At a glance

• Serial numbers 50000001 and up, from March 10, 2011
• Goes with the E2 Type 12 Black and the SRX

The RainJet hard-floor cleaner arrived with the Black series on March 10, 2011 and is still the floor cleaner for the SRX. It replaces a mop and often cleans better. Like a mop it wears: the squeegee head is replaced as it gets worn, a job of a few minutes, and most other parts are just as easy. The soft squeegee sponge is item R15212. We know of no version change.

Clean hardwood floors without a messy mop. The RainJet is a complete system with a sponge, a squeegee and floor cleaner, and it uses the natural cleaning power of water to lift ground-in dirt and grime from tile, linoleum and other hard floors. An interchangeable sponge and brush let you scrub away embedded dirt, a squeegee blade picks up the water for a fast, streak-free finish, and a trigger gives you precise control of the spray. It fits the Black series (E2 Type 12) and the SRX; other E2 Type 12 versions may need the notes on the product page.

Shop and learn more: RJ-12 parts · Owner's manual

Rainbow Vacuum E2 Type 12 / Silver

At a glance

• Made about September 2007 to March 9, 2011; serial numbers about 01327100 to 20199999 (the start is an estimate)
• Two speeds, HI and LOW; HEPA filter R12179
• Goes with: PN-2E (Silver decal), AquaMate AM-12 (III), RainbowMate RM-12 (Silver), MiniJet MJ-12

The "Silver" series E2 Type 12 has two versions. The differences are in the motor, and the second version has some design improvements to help with motor/pump durability.

The Silver series followed the Gold. It kept the two-speed motor and the HEPA filter of the E2 Type 12, and it is the Rainbow the Black series was built on: the Black is structurally the same machine with water-pan lights and without the collapsible cord-wrap arms. The 120-volt controller (circuit board) R12528 fits the Silver and the late Gold.

Rainbow Vacuum Power Nozzle PN-2E / Silver

At a glance

• Version 5: serial numbers 7763130 to about 30079999, July 13, 2005 to March 9, 2011
• Fits the E2 Type 12 Silver and Gold and the E-2 (e SERIES); the decal (e SERIES, Gold or Silver) makes no difference to fit
• Belt R1699, wheel R14338

This power nozzle with the "Silver" applique on top only has one version, considered Version 5 in the schematics.

The Silver decal is the last of three the PN-2E wore. Underneath it is the version 5 nozzle, which had already started during the Gold years, so a late Gold-decal nozzle can be the same version 5 underneath; the serial number tells.

Whichever decal it wears, the PN-2E does the same job, and a new factory PN-2E comes with the standard 8-foot electric hose and a three-year warranty. The full list of what it does is in the e SERIES section just below.

Shop and learn more: PN-2E parts · Owner's manual

Rainbow Vacuum AquaMate AM-12 (III) / Silver

At a glance

• Made July 30, 2007 to March 9, 2011
• Version 1 (two actuators): serial numbers 00001000 to 00143499, July 30, 2007 to August 23, 2009; version 2 (one actuator): 00143500 to 30000000, August 24, 2009 to March 9, 2011
• Item R13300 fits the E2 Type 12 Silver and Gold, not the Black or SRX; with a wet-pickup-rated hose it also works on the E-2 (e SERIES)

The AquaMate Silver series has two versions. The early version has two actuators, one on each side of the pivot arm. The second version started with serial number 00143500 and only has one actuator. This helped reduce parts and create a more straightforward design.

Some refer to this as the AquaMate III and the Black series AM-12 as the AquaMate IV.

The AquaMate III replaces the power nozzle on your Silver series Rainbow to make an instant shampooing system, and it includes a bottle of shampoo and an owner's manual. It removes the stains a vacuum cannot, such as grease, oil, spills and pet accidents, cleans, reconditions and deodorizes your carpets, and dries quickly.

One thing to check first is your hose. A hose rated for wet pickup carries a label saying it contains electric wires and may be used only on carpet moistened by the cleaning process. If yours does not have that label, we will credit your old hose toward the new design that allows water pickup.

Shop and learn more: AM-12 Silver parts · Owner's manuals

Rainbow Vacuum RainbowMate RM-12 / Silver

At a glance

• Goes with the E2 Type 12 Silver

The Silver series RainbowMate was the first miniature version compared to previous RainbowMates. Serial numbers were no longer stamped or used starting with this version.

Unlike the Black RM-12 that followed, the Silver RainbowMate has its own power cord. It is small enough for stairs and other hard-to-reach places, and the belt is the part to replace every few years.

It is very handy for carpeted stairs and landings, upholstered furniture and mattresses, and car interiors, and it adds its own internal motor to the power of your Rainbow. It fits the E2 Type 12 Silver. A late e2 Gold with the improved electric hose may work too, so call us if you are not sure which hose you have.

Shop and learn more: RM-12 Silver parts · Owner's manuals

Rainbow Vacuum MiniJet MJ-12

At a glance

• Made March 10, 2011 to July 2019; serial numbers 60000000 and up
• Item R15817 fits the E-2 (e SERIES) and every E2 Type 12 from 1998 to 2019, not the SRX

The MiniJet came out with the Black series in March 2011. It cleans small spots and stains on carpeted steps, upholstery and car carpet; the complete assembly is the water pump, extraction head, cap assembly, valve and spray nozzle. It was made until July 2019, when the SRX arrived with a MiniJet of its own. We know of no version change.

The MiniJet is the AquaMate's sidekick. It cleans the places the AquaMate cannot easily go: carpeted steps, closets, furniture and car interiors, and it is just as good for spot cleaning a carpet or area rug. Spill a cup of coffee and there is no worry with this little machine around. It comes with a removable supply tank, a 10-foot hose, an extraction head and a bottle of carpet solution.

The MJ-12 fits every E-2 (e SERIES) and E2 Type 12 from 1998 to 2019. SRX owners need the SRX MiniJet (item R17229) instead; the MJ-12 does not fit the SRX.

Shop and learn more: MJ-12 parts · Owner's manual

Rainbow Vacuum E2 Type 12 / Gold

At a glance

• First units ("Stripes", gold stripes very much like the e SERIES): serial numbers 01000000 to 01030000, September 4, 2003 to the second quarter of 2004 (estimate)
• Gold version 1: serial numbers 01030001 to 01187449, from the second quarter of 2004 to January 12, 2006. Version 2 (reduced sound): serial numbers 01187450 to 01326999, January 13, 2006 to August 2007
• Two speeds, HI and LOW; the e SERIES before it had one speed. Type 12 = 120 volt; Type 23 = 240 volt
• Goes with: PN-2E (Gold decal), AquaMate AM-2 (II), RainbowMate RM-2E (Gold), MiniJet MJ-12

The "Gold" version Rainbow has had several revisions. The early production of this model has very similar stripes compared to the E-2 (e SERIES) Rainbow.

The following significant change was with the introduction of the reduced sound version. The motor has had several improvements during its run to help increase durability.

The sound reduction acoustic foam installed made a significant difference in the noise level in both HI and LOW speed.

The e2 Gold Series is the entry to the two-speed models. With a high and a low speed you can run your Rainbow around the clock to clean the air without disturbing your home; the low speed is quiet and unnoticeable even when you stand right beside it. The power nozzle was simplified, with fewer parts doing the same job, which improves durability. Compared with the e SERIES it brings more power, quieter running, an improved motor design and a new-design separator.

Our complete refurbished systems are rebuilt by factory-authorized technicians with factory original parts, and they carry a 10-year labor warranty with pickup service at your doorstep.

Shop and learn more: E2 Gold parts · Owner's manual · Complete refurbished E2 Gold

Rainbow Vacuum Power Nozzle PN-2E / Gold

At a glance

• PN-2E versions by serial number: v1 (7000000 to 7303304) August 5, 1998 to November 16, 2000; v2 (7303305 to 7617931) November 17, 2000 to December 8, 2003; v3 (7617932 to 7645115) December 9, 2003 to March 25, 2004; v4 (7645116 to 7763129) March 26, 2004 to July 12, 2005; v5 (7763130 to about 30079999) July 13, 2005 to March 9, 2011

This power nozzle is difficult to identify as well as service. During its run, it had several changes, and not all the parts worked together. During service, you must look closely at the schematics to determine what version you have. The applique on top will not give much help.

Early version power nozzles still had the black applique that was in use on the power nozzle that came initially with the E-2 (e SERIES) in 1998, and it wasn't till later on when Rexair finally created a matching "Gold" applique. Also, look at the handle on the electric hose closely, as this has gone through three revisions.

Rainbow Vacuum AquaMate AM-2 (AquaMate II)

At a glance

• Serial numbers 4874000 and up, until July 30, 2007
• Item R11391 carries its own water supply

This AquaMate is the first version to get away from the supply water coming from a hose connected to a sink faucet. The supply water is placed in a tank that sits under the Rainbow and water pan in the dolly.

The early pumps on this model were inferior, and Rexair quickly looked to a new design carpet cleaner. The pumps have been improved for service purposes, but many people purchase the new water pick-up hose and opt for the AquaMate III.

Fill the soap container in the handle and you are done: the pump draws the soap and mixes it with the right amount of supply water before dispersing it onto your carpet, so you no longer mix the solution by hand.

Shop and learn more: AquaMate II parts · Owner's manuals

Rainbow Vacuum RainbowMate RM-2E / Gold

At a glance

• Item R7421 fits the E-2 (e SERIES) and every E2 Type 12 except the Black

The RM-2E Gold series is the same as the previous version, and only an applique change sets the "Gold" version from the second version original RM-2E RainbowMate.

Because only the decal changed, every RM-2E part fits the Gold version too. RM-2E serial numbers start at 1110000 (August 5, 1998).

Like every RainbowMate it is the quick tool for stairs, upholstered chairs and furniture, and car interiors, and it adds the power of its own internal motor to your Rainbow's. One RM-2E (item R7421) fits the e SERIES and every E2 Type 12 except the Black.

Shop and learn more: RM-2E parts · Owner's manual

Rainbow Vacuum E-2 / e SERIES

At a glance

• Version 1 (four screws to reach the HEPA filter): serial numbers 9000000 to 9279999, August 5, 1998 to March 26, 2000
• Version 2 (easy rear cover): serial numbers 9280000 to 9999999, March 27, 2000 to September 3, 2003
• One speed, on and off only (the E2 Type 12 has HI and LOW)
• HEPA filter R7292 (version 1) or R10520 (version 2); water pan 2.5-quart R10236
• Goes with: PN-2E, AquaMate I (e SERIES), RainbowMate RM-2E, MiniJet MJ-12

The E-2 model e SERIES Rainbow is set apart into two versions. The second version became effective on 03/27/00 and serial number 9280000. The second version has an easily removable rear cover to make changing the HEPA filter a simple process. The first version has to have four screws removed to allow access to the HEPA filter.

This model initially had two different motor variations but was not connected to the revisions by serial number mentioned above. Both design motors were installed in both version E-2 units. The AME motor was made by Ametek and was the lower quality of the two variations.

The second version, GSE, was made by GS Electric and was a superior motor. In 2001 Ametek bought out GS Electric and became the only manufacturer that supplied motors for the Rainbow E-2. Ametek decided to drop the production of the AME motor and decided to focus exclusively on the GSE motor.

Both the AME and the GSE motors have their own parts. These parts are not interchangeable. Double-check the schematics page to ensure you have the proper model motor before ordering parts. The schematics will give details on both these motors to be sure to get the correct parts for your model.

Over the years, there have been several improvements to the GSE motor. Purchasing a new motor will provide better results in both performance and durability than the original.

Rainbow Vacuum Power Nozzle PN-2E / e SERIES

At a glance

• Made from August 5, 1998; serial numbers start at 7000000
• A PN-2E conversion nozzle (item R13824) fits the D4C SE, D4C and D3C; with the R4901 conversion cord it also works on the D3A, D2A and model D

The PN-2E family power nozzle is no joy to service if you don't know exactly what version you have. Many changes over the years have been made on this model power nozzle, and you must look at the schematics and item descriptions on our website to make sure you are ordering the correct part.

This is the first version power nozzle to have an actual height adjustment wheel for thicker carpets.

The PN-2E made everyday cleaning easier in several ways:

• Height adjustment: three positions for every length and type of carpet.
• User friendly: a fingertip power control and an ergonomic grip for larger rooms.
• Sure Lock: an upright lock lets the power nozzle stand on its own.
• Low profile: it slips under furniture and bed frames.

A new factory PN-2E comes with the standard 8-foot electric hose and a three-year warranty.

Shop and learn more: PN-2E parts · Owner's manual

Rainbow Vacuum AquaMate I / e SERIES

At a glance

• Made from August 5, 1998; serial numbers 4566000 to 4873999

Minor changes to the e SERIES AquaMate are about the only difference compared to the previous version. You can view the schematics to find the small part changes and improvements.

Like every AquaMate I before it, the e SERIES version takes its supply water from a hose on a sink faucet. It was the last one to do so: from serial number 4874000 the AquaMate II moved the water into a tank under the Rainbow. The fluid control assembly is item R7841.

Rainbow Vacuum RainbowMate RM-2E / e SERIES

At a glance

• Serial numbers 1110000 and up, from August 5, 1998
• Item R7421 fits the E-2 (e SERIES) and every E2 Type 12 except the Black

The RM-2E RainbowMate is exactly the same as the RM-2 except for the power cord connection that was changed to work with the improved electric hose receptacle.

The early version design included the same circuit breaker (reset button) as the RM-2. After a short period, Rexair realized that the power control trigger in the handle allowed the user to quickly cut power to this attachment. Hence, they opted to remove the circuit breaker altogether.

A RainbowMate is the quick tool for stairs, upholstered chairs and furniture, and car interiors, and it adds the power of its own internal motor to the Rainbow's. The RM-2E (item R7421) fits the e SERIES with the PN-2E and every E2 Type 12 except the Black.

Shop and learn more: RM-2E parts · Owner's manual

Rainbow Vacuum D4C / Special Edition (SE)

At a glance

• Made April 1990 to August 4, 1998; serial numbers 7000000 to 8999999
• Version 1: serial numbers 7000000 to 7999999, April 1990 to April 1994. Version 2: serial numbers 8000000 to 8999999, April 1994 to August 4, 1998
• Version 1 (1990 to 1994) came with the R-4375C power nozzle; version 2 (1994 to 1998) with the PN-2
• Motor brushes: R2421 up to serial 7520714, the taller R5125 from serial 7520715
• Goes with: PN-2 or R-4375C, AquaMate I (SE), RainbowMate RM-2
• The improved SE hose R4717 replaced the original SE hose R4179 from production on January 21, 1991

The Rainbow D4C (Special Edition) was the last of the D series and ran from 1990-1998. This Rainbow is the last model Rainbow not to use a HEPA filter. The first version used the same motor as the D4C but shortly after, the motor went through several improvements.

The armature and carbon brushes were an improvement for better performance as well as many of the small motor parts received attention. The top of the armature was a problem area as the inner race on the bearing would spin slightly during use. The factory engineers solved this issue by introducing a tolerance ring to help "lock" the inner race, which was an immediate cure.

Other improvements included the flange that received a black coating to prevent rust and corrosion. The first version of this improvement failed as the company that was outsourced to do the coating did not perform one of the steps, which led to significant peeling and corrosion issues. These flanges are easily identifiable by the four screw holes instead of the traditional 8 used before and after.

Some technicians try only to use four screws in an eight-hole flange, but that can lead to water leaking into the air-path and water blowing out the exhaust port.

The main power switch has also changed from a four-wire design to a six-port spring load design. This design was found to be a problem for service as the loaded springs could easily become damaged and require the entire switch to be replaced. Rexair decided it was best to go back to the four-wire switch, and it has been used ever since.

The power nozzle receptacle was also improved by giving more depth for the plug to insert. This gave a better connection and extended the life of the receptacle ports from getting too loose and allowing the plug to fall out easily.

The separator was a considerable change and is recorded as dramatically improving the performance of the filtering process. The new SE design moved the fins from a 45-degree angle to a more straight up and down configuration. The new design also has a hex pocket in the bottom to allow the motor nut to set into and hold the motor while removing the separator nut.

The early spider was a cone shape and matched the gray color of the original separator. Later in the manufacturing process, Rexair engineers decided to go back to a similar spider that looks more like the spider from the D4 and D3C.

The old spider is slightly different and does not work with the new separator, so it should be replaced as a pair to ensure proper function. An easy way to tell the old design spider from the original D4 and D3C is the color. The old design is an off-white or cream color, while the new design for use with the SE separator is black.

The top of the handle initially said Rainbow SE, but that decal was dropped many years before the D4 applique, so you can't go by the handle decal to determine if you have the SE series. The D4 applique only says "Rainbow" without the "SE". You may find many "SE" Rainbows that have had the handle applique replaced and would make someone think that it was just a standard D4.

In 1994 when the "PE" power nozzle was introduced, the Rainbow got a few slight changes. The decals on the latches and the dolly were removed and replaced with lines molded into the plastic. This reduced down part numbers, and many felt it made for a better look.

The standard non-electric accessory hose was not made as heavy-duty as the standard hoses before. This hose was rated as a nine-yarn construction and did not need constant use due to the new electric hose design for the accompanying power nozzle. An easy way to tell the difference is the nine yarn is a very dark brown color similar to the main housing.

The older standard hoses used on the R-2800 and R-1650 power nozzles were lighter in color and made from an 18 yarn construction. All current standard hoses are an 18 yarn design.

Rainbow Vacuum Power Nozzle PN-2 / Performance Edition (PE)

At a glance

• Made April 1994 to August 4, 1998; serial numbers 6000000 to 6999999
• Manual R5827

The PN-2 model power nozzle was a vastly improved design change after 14 years with the R-series power nozzle. The "Performance Edition" was introduced in 1994 with an improved brush roll head design and a user-friendly electric hose.

The new hose now included a trigger in the handle to turn the motor on and off. This allows you to let off the trigger if you are vacuuming a throw rug to prevent the rug's ends from getting caught in the brush roll. With this new design came a plastic bottom that allowed the power nozzle to be used on bare floors.

The soleplate is easy to remove for belt replacement and clog inspection without the need for a screwdriver. The pivot arm was also beefed up to prevent breaking, which was more common on the R-series power nozzles.

Rainbow Vacuum Power Nozzle R-4375C / Special Edition (SE)

At a glance

• Made April 1990 to April 1994; serial numbers 5000000 to 5999999
• Manual R4183

The changes in the R-4375 model power nozzle were minimal when it came to the head itself, but the new electric hose system was a significant improvement.

The new hose design had the power cord installed into the cover and had a plugin for the hose handle positioned at the top of the long metal wand to allow the hose to be disconnected from the powerhead. This improvement allowed you to clean with the small attachments while using the same hose.

The end of the hose is a small "pigtail" cord that comes out and plugs into the receptacle in the Rainbow. Another improvement was the mounting plate for the circuit breaker. A solid mount plate was installed and prevented vibration from allowing it to come loose.

Rainbow Vacuum AquaMate I / Special Edition (SE)

At a glance

• Made April 1990 to August 4, 1998
• Version 1: serial numbers 2500000 to 2999999; version 2: 3000000 to 4565999 (from the service manual)
• Version 2 started about April 1994, the same time as the SE version 2 main unit (an estimate)
• Factory model number R4615, ink brown

The first version that came with the "SE" system was almost exactly like the one with the D4, and a small decal change in the head was about the only difference. The second version, however, employed the new soap switch and got away from the slide pinch design.

The threaded faucet end was also improved with a more significant outside section and increased threads to help use multiple gaskets if needed. The larger "nut" really helped with tightening and loosening from the faucet.

Rainbow Vacuum RainbowMate RM-2 / Special Edition (SE)

At a glance

• Made April 1990 to August 4, 1998; serial numbers 0000001 to 1109999
• The first RainbowMate; it came with the D4C SE

The RM-2 was the introduction of the RainbowMate and was a nice add-on to the Rainbow. This unit allowed the user to clean upholstery, carpeted steps, hard-to-reach areas, and your vehicle. The RainbowMate attachment is straightforward to repair if needed, and parts are inexpensive.

Why own one? On stairs it makes cleaning faster and easier than ever. It cleans most upholstered surfaces, furniture included, and it makes car interiors a cinch. And it brings dual power: connected to the Rainbow, the RainbowMate adds the cleaning power of its own internal motor. It fits the D4C SE with the PN-2 or R-4375C power nozzle electric hose.

Shop and learn more: RM-2 parts · Owner's manual

Rainbow Vacuum D4C

At a glance

• Made April 1986 to April 1990; serial numbers 6000000 to 6999999
• The letter after D4 is the market: C = 120-volt US, B = Canada (a "D4B" takes D4 parts)
• Goes with: R-2800C power nozzle, AquaMate I (D4); manual R2763
• Changes by serial number: field R2597 up to 6051103, then R3159; motor fan R3277 from 6214174; switch R3127 after 6171010; two motor clamp ring segments instead of four after 6476949; the attachment caddy replaced the sprayer from 6560000; exhaust cover R3845 after 6878826

The D4 model Rainbow was a significant change compared to the D3. The overall dimensions and number of parts in the motor were reduced. The performance is close to the same, but the smaller size and fewer parts to go bad made for a significant improvement.

The main power switch was moved from the side of the Rainbow to the top. This made it easier to turn on/off the motor no matter where you were positioned.

Rexair started using more rust-resistant material, which allowed the D4 to take more abuse and still be able to repair without replacing the entire motor. This model also was the start of installing a thermal cut-off to help protect the motor from overheating. The early version installed this on the main housing, but later it was moved to a semi-permanent location on the field.

Also, in the early version, the cooling fan was metal and was found to be a design flaw. The fan would crash into the motor shroud damaging it, and sometimes breaking fins off the cooling fan. This would allow the fins to destroy the field and armature by cutting the winding. The improved plastic motor fan has turned out to be the exact solution as this problem never happened again. The cap cover assembly went through some cosmetic changes over the years. Early versions were completely smooth, just like the side of the cover assembly. The later design changed it to a hammered finish and helped hide scratches and scuff marks.

Rainbow Vacuum Power Nozzle R-2800C

At a glance

• Made April 1986 to April 1990; serial numbers 04000000 to 04999999
• Manual R2862
• Changes by nozzle serial number: pulley R1702 up to 4419683, then R3472; clevis pins and E-rings from 4561267

The R-2800 series power nozzle had very little difference compared to the R-1650 model that came before it. The color was darker, "chocolate brown," compared to the D3 series of "oxford brown". The two appliques on the top were slightly changed, and the main decal on the top matched the D4 series main housing.

The cord straps used to hold the power cord to the hose were changed to a clear transparent strap. Also, a unique smaller strap was introduced for the top curved wand. The gold snap easily identified this strap instead of silver on all the rest.

Rainbow Vacuum AquaMate I / D4

At a glance

• Made April 1986 to April 1990; serial numbers 02000000 to 02499999
• Goes with the D4C
• Factory model number R2845, ink brown

The D4 version of the AquaMate I came with the D4C. Like every AquaMate I, it takes its supply water from a hose connected to a sink faucet, and the cleaning solution is mixed with that water. The first AquaMate of the D4C SE carried this design over almost unchanged; a small decal change on the head was about the only difference. The second SE version replaced the slide-pinch control with a soap switch. Some small parts are shared with the D3 version; the chrome screw H537, for example, fits both.

Rainbow Vacuum D3C / D3A

At a glance

• D3A: serial numbers 4388126 to 4607199, June 30, 1980 to June 4, 1982
• D3C: serial numbers 4607200 to 5999999, June 5, 1982 to April 1986; it started with the R1974 armature
• D3A = three-prong power nozzle receptacle (R-1650A); D3C = two-prong (R-1650C)
• Goes with: R-1650A or R-1650C, the original AquaMate and the AquaMate I (D3)

The D3 model Rainbow was the first for Rexair in the design of an all-plastic outer shell. The early version was the D3A, and it had almost the same motor as the D2A. A separator bolt and a metal separator were present.

This version also had a three-prong receptacle to accept the R-1650A power nozzle.

In June of 1982, the D3C was introduced. The motor was redesigned with a threaded armature shaft that accepted a nut to secure a plastic separator in place. It also went to the two-prong receptacle that continued its use with the D4 model line.

The inner baffle changed colors over the years (white with brown stripes, brown with white stripes). The switch cover did as well. This cover was initially orange, then white, and finally settled on black.
The bearings and motor brushes were an improvement for the D3C. Less cost while keeping the same bearing quality and improved consistency on the carbon material for the motor brushes.

The early exhaust cover had three tabs that would keep it held secure on the cap assembly. These tabs would break easily, which started the duct tape trend of taping the exhaust cover in place. This cover was improved to a solid twist style and was never an issue again.

The drawback of this design is that the intake air was a major motor cooling factor. If you clogged the hose and kept running it long enough, you could melt the cap since it was plastic. The motor didn't have a thermal cut-off, so you could keep running it until the motor would "varnish," which gave off a really "pleasant" smell. The varnish would get all over the inside of the motor and housing, so you ended up having to replace the entire motor. Never something a high-level technician ever wanted to do. Rebuilding is in the blood, so replacing a motor was not done lightly.

Motors in the D2A, D3A and D3C. The motor changed inside these models, so a motor date is not a model date:

• R1405 bypass motor (armature R1426, field R1435): the D2A, through serial number 4388125 (June 29, 1980).
• R1767 motor, with the same armature and field: the D3A from its first serial number, 4388126, on June 30, 1980. The late D2A and the D3A share this motor design.
• R1909 armature with the R1910 field: from November 1981, serial number 4545550, still in the D3A. The R1909 ran through serial number 4607199.
• R2104 motor with the R1974 armature: the D3C, from serial number 4607200 on June 5, 1982. From October 20, 1983 (serial number 4838444, and also serial numbers 4826642 to 4830159) it took the R2424 field, R2420 brush holders, R2421 brushes and R1853 terminals.
• The R2104 replacement motor fits the D, D2, D2A, D3A and D3C.

Rainbow Vacuum Power Nozzle R-1650C / R-1650A

At a glance

• Made March 1981 to April 1986; serial numbers end at 03999999
• R-1650C changes by nozzle serial number: wand cord R1714 and extension cord R1717 up to 00469887, then cord R2496; left lens R1684 up to 00715518, then R2685; right lens R1683 up to 00883682, then R3050
• The R-1650A goes with the D3A; until March 1981 the D3A came with the R1024 (versions G and H)

The R-1650 was the power nozzle of the D3 series. It came in two US versions, and the plug is the quickest way to tell them apart:

• R-1650A: three-prong cord (item R1835), standard with the D3A and its three-prong receptacle.
• R-1650C: two-prong cord (item R1714), made from 1982 for the D3C and its two-prong receptacle. The same manual also covers an R-1650F.

Both have a chrome sole plate and the D3 series "oxford brown" color; the R-2800C that followed is nearly the same nozzle in a darker "chocolate brown". A two-prong nozzle can run on a three-prong D3A, D2A or D2 with the R1700 conversion cord.

Rainbow Vacuum AquaMate I / D3

At a glance

• Made April 1982 to March 1986; its manual says 1982 to 1985
• Goes with the D3A and D3C
• Factory model number R2450, Oxford brown

The AquaMate I replaced the original AquaMate in 1982. It takes its supply water from a hose on a sink faucet, with the cleaning solution mixed into that water. It works on both D3 versions, and the D4 version that followed shares small parts with it, such as the chrome screw H537.

That faucet connection is a real advantage: an unlimited supply of water for as long as you need it. And we carry every OEM factory part for the AquaMate I, from fluid control assemblies to the decals that make yours look like it just came out of the box.

Shop and learn more: AquaMate I (D3) parts · Owner's manual

The original AquaMate (1980 to 1982)

At a glance

• Made 1980 to 1982, for the D3A and D3C
• Factory model number R2031

The original AquaMate was introduced in 1980 and made until 1982, alongside the D3A and D3C. It was the first AquaMate, the start of the idea every later model follows: put the natural cleaning power of water to work on your carpet. It used its own solution bottle (item R2038), and in 1982 the AquaMate I replaced it.

If you still own one, you are in good shape. Many AquaMate parts are the same across the different generations, which keeps repairs easy and affordable. We have no serial number records for it, so if you do not see the part you need, call us and we will check.

Shop and learn more: AquaMate parts · Owner's manual

Rainbow D2A / D2 / D (Chrome)

At a glance

• D (Chrome): second quarter of 1961 to the second quarter of 1974; serial numbers 2270000 to 3599999
• D2: second quarter of 1974 to March 1980; serial numbers 3600000 to 4383000
• D2A: December 1979 to June 1980, overlapping the last D2s; serial numbers C0000001 to C0009999 (the letter C and four digits); about 2,000 were made (an estimate)
• Goes with: R1024 power nozzle; manuals R1290 (D2/D) and R1290V2 (D2A/D2)

D (Chrome). The chrome-top Model D followed the first Model D in the second quarter of 1961 and was built until 1974. It has a chrome-plated top; the lower body is often described as copper colored.

D2. In 1974 Rexair added a factory power nozzle receptacle, and the model became the D2. It came with the R1024, the first Rainbow power nozzle. The D2 and D2A have a three-prong receptacle.

D2A. A short transition model from December 1979 to June 1980, just before the D3A. It has the R1405 bypass motor; the D3A's R1767 motor uses the same armature (R1426) and field (R1435). Collectors report that the copper color changed to chocolate brown in 1979.

What the three share. The replacement motor R2104 fits the D, D2, D2A, D3A and D3C. Carbon motor brush R1552. The 10-inch floor brush R8058 came standard, and it needs a bottom wand with a bend and two raised notches. A 7-foot, 18-yarn hose (R6621 today). Metal separators and copper dollies, which we sell used when we have them. The Version 1 motor of the D and D2 was the last Rainbow motor that spun clockwise; every motor after it was redesigned to spin counterclockwise. The D and D2 used the non-bypass motor (armature R692, field R700) before the bypass motor arrived.

The D2 owner's manual (form R-1290, revision 2/78, Rexair Inc., Troy, Michigan) lists the Massag-Air, a 16-inch floor brush, the attachment caddy, a 4-quart basin and the power nozzle as extras. A PN-2E conversion power nozzle works on the D2A and model D with the R4901 conversion cord.

Rainbow Vacuum Power Nozzle R1024A-H

At a glance

• Made April 1974 to about March 1981
• Standard with the D2 and D2A, and with the first D3A until March 1981; one manual (49658A) covers every version

The R1024 was the first Rainbow power nozzle. Eureka built it for Rexair. It went through eight letter versions. These dates were collected unofficially:

Versions A to D have a chrome sole plate (item R1380).

The D2-era Rainbow Shampooer (AquaMate R1300)

At a glance

• An upright carpet shampooer from the D2 years: about the early 1970s to about 1980 (an estimate; we have no factory record of when it started or ended)
• Stand alone: it does not need a Rainbow to use
• Our item number R1300, listed under AquaMate; the shampoo that goes with it is item R14406

This is the upright shampooing system that goes with the D2 era. It is a stand-alone machine, so it does not need a Rainbow to use. It has a cream solution tank on a tall handle, a brown base with a cream skirt, and a cord that wraps around the handle.

When it was sold. We do not have a factory record for its first or last year. Our estimate is that it was sold from the early 1970s to the end of the D2 era (about 1980). That is an estimate, not a factory date.

Care. After each use, empty the solution container and fill it with hot water, run it in the wash cycle, and flush all the solution out of the lines. Solution that dries in the lines can clog them.

Shop and learn more: AquaMate shampooer R1300 · D2A / D2 / D accessories

Rexair / Rainbow D (first version)

At a glance

• Made April 1955 to the second quarter of 1961; serial numbers 1780000 to 2269999
• The first owner's manual is titled "The All New Rexair", with the Rexair script on the top cap
• Color: gold. Some manuals describe this first version as copper colored

The start of this model had the company name "Rexair" on the front top cap, and by the end of 1960, it was replaced with the word "Rainbow" and a full-color rainbow across it.

The reason is due to a change in operations within Rexair and the sales offices. The sales offices became independent distributors, and the product name was changed to "Rainbow" to separate it from the manufacturer's name.

When the Model D arrived in 1955 it was a major change from every Rexair before it. The gold-top version, with the Rainbow logo, is one of the rarest in the Rainbow family, made only in a short window before the chrome version replaced it.

We can supply a vintage Model D for collection or for daily use. Contact us for a custom quote on the main unit alone or with all its original attachments.

Shop and learn more: D parts · Owner's manual · Model D main unit

Rexair Vacuum C

At a glance

• Made October 1950 to April 1955; serial numbers 1130000 to 1779999
• Parts for the A, B and C are on one parts page

Model C was again exactly the same as the two previous models except for a color change to silver with red trim.

The curved bottom wand and both a locking rug and floor tool were improvements over the straight wand/friction fit tools that came standard on previous models.

This model also saw the introduction of the plastic water pan and also an optional larger water pan.

Its later version was the first Rexair with a plastic water pan, where every earlier model used metal. Collectors describe it as silver hammertone with red nameplates and trim.

We can supply a vintage Model C for collection, and we carry the parts to keep yours running. Contact us for a custom quote.

Shop and learn more: A, B and C parts · Model C main unit

Rexair Vacuum 3

At a glance

• Made from the first quarter of 1942 to October 1946; serial numbers 300000 to 399999

The Model 3 (Model Three) is the wartime Rexair, and one of the most interesting machines in the Rainbow story. It began in the first quarter of 1942 and was built for the war effort as a special unit that was not sold to the public. Many went to the military for use in hospital rooms, where cleaner air mattered.

It sits between the two runs of the Model B, so a Model B with a serial number above 400000 was built after the war. It is extremely rare, a model many people in the vacuum world have never even heard of. Read the full story of Rexair in World War II just below.

Our A/B/C schematic does not cover the Model 3, so please call us about parts.

Shop and learn more: See our Model 3 listing

The Remarkable History of Rexair's Vacuum Cleaner During World War II

Introduction

The story of Rexair's Rainbow during World War II is more than the tale of a household appliance. It is a story of innovation, adaptability and a real contribution to the war effort. Here is how a water-filtration vacuum went from the family living room to radar cases, rocket launchers and hospital rooms.

Early Innovations and Wartime Expansion

Rexair's journey into innovative vacuum design began in 1936, when T. Russ Hill, inspired by street cleaners, introduced the idea of using water in the design. That idea gave the company its slogan, "Wet Dust Can't Fly!", and by the late 1930s it was recognized by medical professionals as a significant advance for allergy and hay fever sufferers.

By the time World War II began, Rexair had already established itself as an innovative force in the industry. In 1941 a strategic merger with the Martin-Parry Corporation of Toledo, Ohio, greatly expanded its manufacturing capabilities, and just in time: the company soon began contributing to the war effort by producing radar cases, rocket launchers, and ship partitions and linings.

Unique Production During WWII

What sets Rexair apart in the history of wartime manufacturing is that it was the only company permitted to continue producing vacuum cleaners during World War II. Doctors prescribed these machines to people with respiratory problems, which allowed Rexair to keep limited production running throughout the war.

Role in Military Healthcare

Many Rexair machines, particularly the Model Three introduced in 1942, were sold to the military for use in hospital rooms. There they cleaned the air for patients, proof of how well the water-filtration design improves air quality in critical healthcare settings.

Post-War Developments

After the war Rexair kept innovating and expanding its line. The Model Three, produced until 1946, laid the foundation for the models that followed: the Model B returned in October 1946, and the Model C arrived in October 1950, continuing the company's tradition of pioneering vacuum technology.

Conclusion

Rexair's story in World War II is a testament to the company's resilience, ingenuity and ability to adapt in hard times. From its water-based filtration system to its crucial role in supporting both the war effort and healthcare, Rexair's contribution is a significant chapter in the story of technological advancement and industrial adaptability in times of crisis. That same spirit is still in every Rainbow, which is why we carry parts for models going all the way back to the Series A.

Rexair Vacuum B

At a glance

• Before the war: April 1940 to December 1941, serial numbers 172000 to 299999
• After the war: October 1946 to September 30, 1950, serial numbers 400001 to 1129999
• Manual: model B, April 1940 to October 1950

Model B, "Black Diamond," is the same as the Series A except for the black color, front nameplate, and water pan change.

The improved water pan was redesigned with a built-in flange to allow an entire rubber gasket/diaphragm to lay on instead of a metal flange with a rubber gasket on top.

The Model B was built in two runs, with the wartime Model 3 between them. Its owner's manual still carries the Rexair name and emblem, not Rainbow.

We can supply a vintage Model B for collection (ask for a custom quote), and we carry parts for it.

Shop and learn more: A, B and C parts · Owner's manual · Model B main unit

Rexair Series A

At a glance

• Made October 16, 1936 to April 1940; serial numbers 001001 to 171999

If you wonder why there is a dash in the model section of the title, that is because this Rexair only says "Series A" on the top nameplate and not "Model" as in all future Rexair / Rainbows.

The Series A was the first water-filter Rexair. Its water pan used a metal flange with a rubber gasket on top, which the Model B replaced. We still carry parts for it. Collectors describe it as chocolate brown, with only the round top nameplate and no front nameplate.

We can supply a vintage Series A for collection (ask for a custom quote). And if you already own one of the very first Rainbows, we carry every part for it.

Shop and learn more: A, B and C parts · Series A main unit

RainMate

The RainMate has had several versions since it was first introduced. Many changes were cosmetic. The first version had four slots in the back to hold Rexair fragrances, but that has now been removed.

The IL version was introduced and included LED lights that shine into the water. The switch had a high/low setting for the brightness of the lights. In April 2015, Rexair introduced an improvement that allowed the LED lights to be turned off completely.