Replacement parts for a gas furnace can be purchased at Repair Clinic, Reliable Parts, or HVAC Parts Warehouse. All three companies offer online purchasing, however only Repair Clinic and Reliable Parts also offer purchases by phone.
Repair Clinic has a 365-day return policy on all parts. The company sells gas furnace parts for more than 30 brands such as Coleman, Kenmore and Lennox.
Reliable Parts sells gas furnace parts for major brands such as Amana, Rheem and Goodman. The company offers flat-rate shipping if parts are shipped within the United States.
HVAC Parts Warehouse offers parts for nine brands of gas furnaces including Lennox, Rheem and Honeywell. The company ships to all over the United States and to over 150 countries.