Lennox furnaces are some of the most reliable on the market. However, like anything else, sometimes they are in need of repair. Shop our wide selection of Lennox furnace parts below. You will find everything from a Lennox thermostat, to a heat pump, and everything in-between. Make sure to enter your model number so that your furnace and your parts are an exact match. If you need help finding your Lennox furnace model number, call a RepairClinic representative will be happy to help you locate it via the phone or live chat. Save money on Lennox parts today with RepairClinic -- your trusted online source for Lennox replacement parts.