I bought a fancy new Ecobee thermostat from Amazon and needed someone to install it and clean the furnace as well - Heating Cooling Co. responded and gave me the best quote - not to mention that another contractor wouldn't take the job because they only installed Ecobees purchased at Bestbuy, weird.
Athir showed up on time, assessed the situation and went to work. The house is really old so he had to deal with the wiring to make the thermostat work. After a few attempts it all clicked and Ecobee was online. Until I decided to test the heating function. The furnace kept shutting off taking the thermostat with it, which made it continuously reboot.
Something was definitely wrong, so Athir attempted to toubleshoot and he had a general idea what the issue was.
He wasn't able to fix it then, so he promised to come another day, or find another technician. He came back a few days later and determined that the air circulation was not working properly so the furnace was overheating. The solution was to increase the air flow by boosting the power. Everything works great now.
All in all, I'm really happy with the service and the troubleshooting ability. Will definitely call again in the spring when it's time to turn on the AC.