Mainstream Engineering Announces Qwik System Flush® is Now Available in Convenient 1 lb. Aerosol and 16 oz. Liquid Containers

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QwikProducts™ Qwik System Flush® outperforms competition in moisture absorption, acid absorption and oil absorption, making it the most effective HVAC/R flush.

Qwik System Flush

We are pleased to offer our customers new packaging options of our popular system flush product.

Mainstream Engineering announced today the QwikProducts™ Qwik System Flush® is now available in 1 lb. aerosol and 16 oz. liquid containers.

Qwik System Flush® is the HVAC/R industry’s most effective air conditioning equipment flush utilized for R-22 to R-401a retrofits and compressor burnouts. Independent tests by the Florida Institute of Technology and Dynalene Inc. reveal Qwik System Flush® absorbed 10 times more oil, 6 times more moisture and 5 times more acid than competitive formulations.

In an HVAC unit, moisture and/or contamination can lead to system failure. For this reason, it is important for the flushing product to absorb moisture and transport it out of the system. Similarly, acid absorption and oil absorption by a flush is of equal importance. Any amount of inorganic acid or incompatible oils in the system can lead to failure.

Qwik System Flush® was originally developed by Mainstream Engineering for the U.S. Air Force to clean fighter jet oxygen breathing systems without using chemicals that were harmful to the pilot or environment. That same technology was reformulated for use with HVAC and refrigeration systems to create the industry’s most effective cleaning solution.

Qwik System Flush® is now available in three convenient sizes:
1 lb. pre-charged canisters for cleaning up to a 5-ton refrigeration system
2 lb. pre-charged canisters for cleaning up to a 10-ton refrigeration system
16 oz. liquid refills for refillable flush kits

"We are pleased to offer our customers new packaging options of our popular system flush product," stated Dr. Robert Scaringe, President of Mainstream Engineering. "Our sales of Qwik System Flush® continue to grow. We are proud to offer our patented formulation that we manufacture right here in the USA.”

The third-party test results are available at

The history of Qwik System Flush® and its path from military development to HVAC can be found at

Information on the Qwik System Flush® product line can be found at

About QwikProducts™

QwikProducts™ is the HVAC/R product division of Mainstream Engineering, a solutions-oriented research, development and manufacturing business. The QwikProducts™ line of heating, ventilation, air conditioning and refrigeration (HVAC/R) products includes: QwikLug™, the industry’s most easily installed compressor terminal repair kits; the QwikCheck® 2-second refrigerant acid test kit; QwikShot®, the industry’s only acid treatment that doesn't leave a residue; Qwik608™ EPA Training & Certification; and Qwik System Flush®, the most effective system flush for line set clean-outs. All QwikProducts are proudly made in the USA.

For more information, contact QwikProducts by Mainstream Engineering at 321-631-3550 or info(at)qwik(dot)com or visit

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