FLOW AIDE System Descaler quickly dissolves water scale, lime, rust, and other water formed deposits, restoring efficiency to most all appliances. Flow Aide System Descaler is a  non-toxic concentrate which is certified to NSF/ANSI 60 for use as a cleaner in potable water systems.




  •  ● Non-Corrosive

  •  ● Non-Toxic

  •  ● Fully Biodegradable*

  •  ● Safe to Handle

  •  ● Zero V.O.C.


         Flow-Aide Descaler Flier      MSDS     Flow-Aide Information

Flow-Aide Distributors


RECOMMENDED USES: Ice Machines, Humidifiers, Water Heaters, Boilers, Heat Exchangers, Chillers, Vacuum Pumps, Condensers, Evaporators, Tanks, Potable Waterlines, and Water Operated Equipment.


IMPROVE EQUIPMENT EFFICIENCY: Water scale deposits are a significant cause of heat transfer loss, along with the subsequent increase in energy costs. In fact, even a thin layer of scale (1/32") can cause a 30% increase in the cost to operate that piece of equipment. Keeping the heating passages free of mineral deposits significantly improves efficiency, conserves energy, extends the useful life of the equipment, and saves you time & money.






TO 100%


Whitlam Flow-Aide System Descaler Kit has been designed to work with Tankless Water Heaters that provide 3/4" hot and cold service connections. Whitlam Flow-Aide System Descaler is NSF approved and safe to dispose of in drains*.

  Flow-Aide Kit Flier



Tankless Water
Flow-Aide System
Descaler Kit

Kit Includes:

1 - 3.5 Gallon Bucket
1 - 500 GPH Pump
2 - 5 Foot Rubber Hoses
1 - Quart Flow-Aide


Descaling Procedure:

1. Disconnect power to water heater.

2. Close hot and cold isolation and service valves and remove service caps.

3. Pour 1.25 gallons of water into bucket and place under water heater. 

4. Add contents of 1 quart bottle of Whitlam Flow-Aide into bucket (Bucket should be filled approximately 1/2 full).  The higher the concentration the faster the system will be cleaned.  Minimum dilutions is 1 part water to 1 part Flow-Aide.  Be sure to have enough solution to keep the pump  submersed when in use.

5. Connect one hose to pump, and other end of same hose to cold service valve. Place pump in bucket.

6. Connect second hose to hot service valve. Place other end in bucket.

7. Open both hot and cold service valves.

8. Plug pump into grounded receptacle.

9. Allow pump to circulate Whitlam Flow-Aide solution through heater for 30-45 minutes. Unplug pump.

10. Close cold service valve. Remove hose from cold service valve, and replace service cap.

11. Disconnect the hose from the pump and remove pump from bucket. Discard Whitlam Flow-Aide solution.

12. Flush tankless water heater for 3-5 minutes or until water flows clear by opening the cold isolation valve and allowing water to exit through the hot service valve into a drain or bucket. If using a bucket, empty periodically.

13. Close hot service valve. Remove hose from service valve and replace service cap.

14. Open hot isolation valve.

15. Connect power to water heater and return appliance to service.

Service Kit Installed

If service valves have not been installed on your heater, then the heater must be disconnected from the plumbing and drained, and the Whitlam Flow-Aide System Descaler Kit must be connected directly to the cold and hot water connections.

Service Kit Installed

*The solution is biodegradable with a BOD value of 16 mg/l. This normally allows the solution to be water flushed down sewers. Check with local ordinances and regulations in your area prior to disposal.



FLOW-AIDE System Descaler is specifically designed to dissolve the toughest water scale, lime, and rust deposits from virtually any piece of water based equipment. This powerful, yet totally safe, liquid is non-toxic, non-flammable, non-hazardous, non-corrosive and biodegradable. FLOW-AIDE System Descaler will not harm your personnel, equipment or our environment!

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What others are saying
about FLOW-AIDE...

We used this product to descale a residential hydronic boiler and it worked great. You're tech support is first rate. Our Business relies on customer satisfaction and Whitlam helps us provide that. Thank you!!!
-P. Errington - Allied Piping System,  Akron, OH

I used your product to clean out a customer tankless water heater, he has called me 3 times to thank me, that it worked so good.  We use to use Acid and have to wear masks, but the smell was always there. We got Flow-Aide, from our jobber. No more smell. I think Flow-Aide does a better job. -Bradicks Plbg. - Venango, PA

My customers say it work a lot better then vinegar w/o the smell. thank you!
- Canon City Winnelson, CO

I used flow aide in my tankless heater and it work a lot better then it did befor
e. - Woodward's Services, PA 


There are so many flushing products coming out onto the market its hard to keep up, but I can tell you that Flow-Aide manufactured by J.C Whitlam is a superior product. FLOW AIDE System Descaler quickly dissolves water scale, lime, rust, and other water formed deposits, restoring 100% efficiency to your tankless heater. Flow Aide System Descaler is a non-toxic concentrate which is certified to NSF/ANSI 60 for use as a cleaner in potable water systems.
- Alpine Heating & Cooling, Burlington, WA

I have an open loop geothermal system that was installed in an area where we have a high iron content in the water. It does not take long of running such water through the heat pump before the piping to the heat exchanger is coated with iron and the deficiency of the unit suffers tremendously. If the iron deposits are not removed, eventually the unit plugs up resulting in a costly process to reopen it.

A local plumbing supply company recommended Flow-Aide to me two years ago and every six to eight weeks I flush the piping to the heat exchanger with the Flow-Aide. Previously I tried vinegar and it just did not do the job. The Flow-Aide removes the iron. restoring the exchanger to its efficient level this generally takes about 45 minutes to an hour, and done on a regular basis keeps the heat pump working as it should.

I highly recommend Flow-Aide for such an application as I described, and considering knowing Flow-Aide is biodegradable is an added bonus.
J. Lovering,  Dover, NH







FLOW-AIDE COMMERCIAL GRADE SYSTEM DESCALER KIT - Designed for large capacity appliances. Quickly dissolves water scale, lime, rust, and other water formed deposits, restoring efficiency to most appliances.





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We recommend having your water lines and Tankless Water Heater serviced by a professional Plumbing and Heating Contractor


Click the logo below to find a
professional contractor in your area.



Available through local Plumbing and
HVAC Distributors throughout North America

Click Here to Find one in your area

 Flow-Aide Distributors



Flow-Aide Descaler Flier

Improve Your Tank
Water Heater Efficiency

Lime and Scale buildup will reduce your
efficiency of you tank water heaters or radiant boilers in a matter of months.  FLOW-AIDE helps bring your heating unit back to life in a matter of minutes.

Tank Cleaning Instructions


 What you'll need to descale your Tank Water Heater:
 1-3 Gallons of Flow-Aide Biodegradable Descaler (see usage table)
 1 - 8oz. Can Weatherproof One-Step PVC Cement
 1 - 4 oz. Can Blue Magic Thread Sealing Compound
 1 - 6 foot Schedule 40 PVC Pipe
 3 - 3/4 inch Sch.40 PVC Threaded Adapter with SLIP Fitting
 1 - 3/4 inch Sch.40 PVC Tee with with SLIP x SLIP X FIPT Fittings
 1 - 3/4 inch Sch.40 PVC PVC Valve with Threaded fittings
 1 - 3/4 inch Brass connector with Threaded Hose Adapter
 1 - 3/4 inch Rubber Hose with length to reach to a drain
 1 - Plumb-Pro 25 foot Tape Measure
 1 - Plumb-Pro 1 inch Ratchet PVC Cutter
 1 - Plumb-Pro Soft Jaw Pliers
 1 - 16 oz. Glue Wash Hand Cleaner



Flow-Aide Distributors


Whitlam 84L Price Catalog 






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