I had a high end thermostat installed with the new HVAC system you installed over 5 years ago. The WIFI function of the thermostat has not worked for over a year. The entire thermostat went out on 12/22/2018 (the day I put in a service call). I was informed that the thermostat was no longer under warranty The service tech. was very responsive and provided great service; however the cost of replacement thermostats ($700+ to $272) is outrageous. I could have bought a thermostat from Home Depot for less than $50 that had superior features and is easier to read than the low end thermostat that you charged me $272 + a service charger. I have been on your annual service plan for many years and have bought two HVAC systems from you. I have always been satisfied with your service, but I will now begin shopping for future services
Edward Keiser.