Furnace Not Turning On: 7 Checks to Make Before You Call a Pro
A furnace that won't turn on is often a thermostat setting, tripped switch, clogged filter or dirty flame sensor. Safe checks, in order, and when to call.
Category: Heating & Cooling
Furnaces, heat pumps, air conditioners, mini-splits, dehumidifiers, air purifiers and space heaters: how they work, simple fixes, filters, sizing and running costs.