The number one question that we hear is: Why hasn’t a simple idea to affordably extend an HVAC system’s fan run time not been developed before now? Answer? There are scores of different thermostats and dozens of different single HVAC systems presenting almost infinite combinations and it is an extremely difficult task to develop a single solution.

The CWS HVAC CHIP is a universal smart chip that is compatible with every make and model of HVAC system and thermostat manufactured in the U.S.A. It adjusts the HVAC ventilation blower fan to stay on for an extended amount of time after the cooling and /or heating unit cycles off. Most systems are designed for the fan to turn off when the thermostat tells it to.

The CWS HVAC CHIP Advantage

CWS HVAC CHIP reads HVAC system operation and tells its fan how to function more efficiently in both heating and cooling modes.

CWS HVAC CHIP may tell the fan to run for as long as five to six minutes to maximize efficiency of use of affecting components and reduce the number of system cycles…again, in both cooling and heating modes.

It’s the only affordable energy conservation product on the market that can be installed by either the consumer or the HVAC contractor on both residential and commercial HVAC systems.  And it works on all types of HVAC systems and thermostats. It is installed on the 24-volt side of the system.



  • Gas Furnace Heater
  • HVAC Independent Heat and Air Conditioner
  • Electrical Heater
  • HVAC with Multi-AC Compressors
  • Air Conditioning
  • HVAC with Variable Speed Fan
  • HVAC Split System
  • Smart Thermostats
  • HVAC with Multi-Furnaces
  • HVAC Systems Before 1980
  • Are You Ready to Save Money and Energy?

    Disclaimer: Coil Winding Specialist, Inc., its affiliates, agents, and employees acting on behalf of Coil Winding Specialist, Inc. (collectively, “CWS”) disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. CWS reserves the right at any time and from time to time to make changes to design, technical specification, or construction of any product listed on this website without notice. CWS also reserves the right to discontinue or limit sale of any product or service available throughout this website on temporary or permanently basis without notice. CWS highly recommends customers not to use its products offered on this website for inappropriate use and applications. Products should be tested for its suitability by prospective customers in all possible applications and conditions. Customers using or selling CWS products for use in other than recommended applications do so entirely at their own risk and agree to fully indemnify CWS from any damages arising or resulting from such use or sale.

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