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.