Furnace Parts

Furnace Parts & HVAC Replacement Components

Shop a wide selection of furnace parts and HVAC replacement components at MasterBuilder Mercantile. Whether you're repairing a gas furnace, replacing a failed control board, or servicing a residential or commercial heating system, find the replacement components you need from trusted HVAC manufacturers.

Our furnace parts collection includes blower motors, draft inducer assemblies, furnace control boards, pressure switches, hot surface ignitors, gas valves, and other heating system components. Browse replacement parts by manufacturer, component type, or OEM part number to help identify the correct replacement for your equipment.

Shop Furnace Replacement Parts by Type

Find components for common furnace repairs, preventative maintenance, and heating system service.

• Furnace Control Boards: Replacement ignition and integrated control boards that manage furnace operation, safety circuits, blower timing, and heating sequences.
• Blower Motors & Assemblies: Replacement blower motors and assemblies used to circulate heated air through forced-air heating systems.
• Draft Inducer Motors: Combustion air and exhaust inducer assemblies for compatible gas furnaces.
• Furnace Pressure Switches: Air-proving and safety switches designed to monitor pressure conditions during furnace operation.
• Hot Surface Ignitors: Replacement furnace ignitors used in compatible electronic ignition systems.
• Gas Valves: Replacement gas control valves for compatible gas-fired heating equipment.
• Heating Controls & Electrical Components: Control modules, switches, sensors, and related furnace service parts.

Furnace Parts by Manufacturer

Browse OEM and compatible replacement furnace components from leading HVAC brands, including:

• Lennox: Furnace control boards, pressure switches, blower motors, and ignition components.
• Armstrong Air: Replacement furnace switches, controls, and blower components.
• Carrier: Heating system replacement parts and furnace service components.
• Coleman & York: Draft inducer motors, furnace controls, switches, and ignition components.
• Goodman-Amana: Furnace blower motors, control boards, and replacement parts.
• ICP, Heil & Tempstar: Furnace controls, motors, and compatible heating system components.
• Fasco & KeepRite: Replacement motors, draft inducer assemblies, and furnace service parts.
• Rheem, Trane & Luxaire: Replacement furnace components for compatible heating systems.

Use the Brand filter on this page to narrow your search to a specific manufacturer.

Finding the Right Furnace Replacement Part

When replacing a furnace component, it's important to verify the correct part number and equipment compatibility. Similar-looking furnace components can have different electrical ratings, operating specifications, or mounting configurations.

Before ordering, we recommend checking:

• The original manufacturer's part number or approved replacement number.
• Your furnace manufacturer and equipment model number.
• Electrical specifications, including voltage, frequency, and motor ratings where applicable.
• Physical dimensions, connections, and mounting requirements.
• Manufacturer compatibility and superseded part numbers.

Many furnace replacement components are designed for specific equipment models. Always confirm compatibility before installation, and have safety-critical gas and electrical components serviced by a qualified professional.

Furnace Parts for HVAC Contractors & Homeowners

MasterBuilder Mercantile supplies furnace replacement parts for HVAC contractors, mechanical service companies, maintenance professionals, and homeowners sourcing replacement components for their heating equipment.

Whether you need a single replacement pressure switch or multiple components for ongoing furnace maintenance, our online store makes it easy to browse furnace parts, compare specifications, and order available products.

Looking for additional heating and ventilation components? Explore our Unit Heater Parts collection or browse our Furnace Parts selection.

Frequently Asked Questions About Furnace Parts

How do I find the correct replacement part for my furnace?

Start with the manufacturer's part number printed on the existing component. You should also verify the furnace model number and check whether the original part has been superseded by an approved replacement.

Are furnace parts interchangeable between brands?

Some replacement components may be compatible with multiple furnace brands or equipment models, but compatibility should never be assumed. Confirm the manufacturer's approved replacement information and technical specifications before purchasing.

What are the most common furnace replacement parts?

Commonly replaced furnace components include pressure switches, hot surface ignitors, blower motors, draft inducer motors, control boards, and gas valves. The appropriate repair depends on the furnace model and the diagnosed fault.

Can I order furnace parts by OEM part number?

Yes. Search the MasterBuilder Mercantile website using the original equipment manufacturer (OEM) part number or a documented replacement number to locate matching products.

Do you supply furnace parts in Canada and the United States?

MasterBuilder Mercantile serves customers in Canada and the United States. Shipping options and availability are provided during checkout.