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![gas furnace] what is the switch above the thermostat? House built in 2019, Canada. Last gas bill was 150$ for one month. There is almost always either the furnace or a fan gas furnace] what is the switch above the thermostat? House built in 2019, Canada. Last gas bill was 150$ for one month. There is almost always either the furnace or a fan](https://preview.redd.it/gas-furnace-what-is-the-switch-above-the-thermostat-house-v0-r9xux10l8g981.jpg?auto=webp&s=31db4168aea2febae7472d7b830e1c6e8fe290d0)
gas furnace] what is the switch above the thermostat? House built in 2019, Canada. Last gas bill was 150$ for one month. There is almost always either the furnace or a fan
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