Customer had another service tech to install a new thermostat a few days ago. Max stated that the heat was not working prior to installing the thermostat. I found that the thermostat was not programmed correctly. I programmed the thermostat for one called to heat stages and now the system is working correctly. I also found heavy buildup of growth in the air handler. Customer wants me to come back to install the Pure Air and perform a maintenance at the same time on March 7th in the AM. Please schedule. Membership is buy one get one and is extended thru 1/2026.