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Beam IQS 3500A

Beam Serenity
Plus 3500
Power unit


  • Waterlift: 124
  • Airwatts: 1000
  • CFM: 211
  • Amps: 13.5
  • Voltage: 240

Beam Serenity Plus 3500

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Beam Serenity Plus 3500 Central Vacuum:

With the introduction of the Electrolux Control System, the Beam Serenity QS series is the new standard in cleaning power and performance. With the patented Quiet Pac™ sound insulation system, the Serenity QS models are engineered for insulation where noise is a factor.

  • Built-in Utility Inlet
  • Self-Cleaning Filter from the Inventors of GORE TEX® Fabric
  • On-Guard™ Anti-Microbial Bucket
  • 10 Year Warranty

Electrolux PU3650B


Beam Serenity Plus 3500

Authorized Beam Dealers are only allowed to ship Beam products within 100 mile radius of their location. Beam is a registered trademark of Electrolux Home Care Products Ltd. Thinkvacuums.com is not a licensed dealer nor affiliated with Beam products, however we offer compatible replacement tools and accessories for your Beam unit.
Learn more about a perfect alternative - we recommend Electrolux Central Vacuums.

Beam QS 395 Central Vacuum

The Serenity QS series launched by Beam includes a total of four vacuum cleaners, each of them a little more advanced and better-performing than the one launched before it. The first vacuum cleaner of the series can clean the dirt spread over up to 3,500 square feet while the last one can clean any kind of dangerous particles spread over up to 15,000 square feet. This best-performing model of the series is the Beam Serenity QS 3500C central vacuum cleaner.

Not only is the Beam Serenity QS 3500C central vacuum cleaner the best-performing product in the Serenity QS series, but it is also the largest. In fact, it has the same dimensions as the 395C vacuum cleaner, which was introduced on the market before it – 14 inches its diameter and 42 inches its height. However, it surpasses its predecessor when it comes to the power of the motor. The dual motor of the Serenity QS 3500C vacuum produces a total of 1,000 air watts, 211 cubic feet or airflow per minute and 240 volts. On the other hand, it produces less suction power than the previous vacuum cleaners launched within the Serenity QS series, 124 inches to be exact. However, the double power of the motor allows the 3500C vacuum cleaner to fulfill its duty on surfaces of up to 15,000 square feet. Moreover, the Quiet Pak sound insulation system allows it to do it quietly than many other vacuum cleaners available on the market right now, this insulation system being one of Beam’s hallmarks.

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Although it has a venting option, the 3500C vacuum cleaner does not have a motor venting filter, but this filter is only useful if there is no exhaustion to the outside. There is no programmable logic controller with this vacuum cleaner either. However, it has a self-cleaning HEPA filter fitted on it and the popular On-Guard anti-microbial collection recovery bin. There is no risk of the seven-gallon recovery bin being contaminated by bacteria, mold or fungi as a result of the action of the AlphaSan agent, which is a feature only these vacuum cleaners manufactured by Beam have.

Additional Information Regarding the Beam Senerity Plus 3500 Central Vacuum

The Beam Serenity QS 3500C central vacuum cleaner also has a utility inlet on the body, as well as an included vibration absorption system which acts against the vibrations emitted by the vacuum cleaner when running. Finally, the ATLIS intake technology is also used with this model. However, unlike the other three vacuum cleaners in the Serenity QS series which come with a guarantee of ten years, the 3500C vacuum cleaner comes with a guarantee of only seven years. The motor and the electrical components are covered by this seven-year guarantee while the housings are all covered by a limited lifetime one.

Any large home, condo or commercial space can be cleaned very easily and quietly with the Beam Serenity QS 3500 central vacuum cleaner, whose value is unsurpassed both within the series it is part of and on the profile market thanks to the multiple patented systems and features it has.

Care and Maintenance for the Beam Serenity QS 395

Your Beam Built-in Vacuum comes with a lifetime limited warranty (see complete warranty details elsewhere in this pamphlet). It will give you a lifetime of trouble-free service by following some simple guidelines:

  • Motor never needs lubrication. Bearings are permanently sealed and lubricated.
  • Motor brushes should be checked by your authorized Beam dealer after 500 hours of use.
  • Power unit can be dusted off with a clean, soft cloth. Caution: do not use liquid cleaners or water as an electrical shock may occur.
  • The Beam QS 395 is not to be tamperd with. Do not place anything on top of power unit as this could restrict cooling air to the motor, causing the motor to overheat.
  • Do not attempt to pick up anything that will not go through the cleaning tool or hose end. Do not use the system to pick up construction debris.
  • Do not attach anything else to the system’s electrical power source. Be sure that a properlysized protected circuit is used for your unit’s electrical requirements. Consult your authorized Beam dealer for the correct size
  • After removing the hose from the inlet, hold the inlet door open for a few seconds to help clear dirt from the vacuum tubing and make sure the power unit has been turned off.
  • To ensure proper cleaning, use only one inlet at a time.
  • If service is ever required, have it performed by your authorized Beam dealer.

Filter maintenance for the Beam Serenity QS 395

Beam’s exclusive filter is permanent and selfcleaning. However, if cleaning is desired, just follow these five easy steps:

  1. Remove the dirt receptacle.
  2. Wrap a large plastic trash bag around the lower portion of the power unit, holding it firmly in place.
  3. Grasp the sewn-in weight at the bottom of the filter through the bag (as shown) Shake vigorously Dirt will
    drop into bag.
  4. Carefully remove the plastic bag from the unit. Then empty the dirt receptacle into the bag, as well.
  5. place the dirt receptacle on the power unit. Remember, any dirt that is spilled can be easily vacuumed by attaching the hose to the utility inlet and activating the power unit with the manual switch.


With Beam, you can rest easy.


Lifetime limited warranty

The Beam power unit body and filter are warranted for as long as you own your home. Motor and electrical components are warranted for ten years on the Beam Serenity® QS and seven years on the Beam. Hoses, attachments and accessories are warranted for three years except for consumables such as light bulbs and belts. Ask your Beam dealer for complete warranty details.

Vacuum cleaners used for commercial purposes, except for their motors, will be warranted for a period of six (6) months from the date of purchase. The motors of commercially used upright vacuums will be warranted for one (1) year and the motors of all other commercially used vacuum cleaners will be warranted for two (2) years. Thereafter this Limited Warranty shall be null and void.

This warranty only applies while the product remains within the United States, and shall be null and void in any other US territories, possessions, or foreign countries.

90-day money-back guarantee

If you, the original purchaser, are not satisfied with the performance of your new Beam system within the first 90 days from the date of purchase, your dealer will remove the power unit and refund your money. The 90-day money-back guarantee applies to new and complete installations only.

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