My warning to you and anyone else thinking of building a thermostat for an HVAC system with a gas furnace: https://community.sparkdevices.com/t/burning-down-th

My warning to you and anyone else thinking of building a thermostat for an HVAC system with a gas furnace: https://community.sparkdevices.com/t/burning-down-the-house/2204 https://community.sparkdevices.com/t/burning-down-the-house/...