Heaters

Keep your cab warm and your visibility clear with premium heavy-duty truck heaters from American Radiator. Our truck heater cores and heater assemblies are built for durability, superior heat transfer, and reliable performance in even the toughest driving conditions. Designed to maintain consistent cabin temperature and efficient defrosting, these heaters ensure comfort and safety during long hauls or cold-weather operations.

American Radiator carries replacement truck heaters for major brands such as Freightliner, Kenworth, Peterbilt, Volvo, International, and Western Star. Each heater core is manufactured to meet or exceed OEM standards, ensuring a precise fit, dependable heat output, and smooth integration with your truck’s HVAC system. Whether you need a heater replacement or a complete HVAC unit, our parts provide long-lasting performance and reduced downtime.

Our nationwide inventory and fast shipping keep your trucks on the road, while expert support helps you find the right part for your exact make and model. Trust American Radiator for truck heater replacements that deliver efficiency, comfort, and reliability—mile after mile.

FAQ'S

What types of heavy-duty heaters do you carry?
We offer engine-integrated heaters, cabin heaters, auxiliary heaters, heater cores, and electric heater components suitable for trucks, buses, and off-road equipment.

How do I choose the correct heater for my application?
Match the heater’s BTU or watt rating, inlet/outlet connections, mounting style, and compatibility with your cooling and HVAC system. Use OEM part numbers or compare existing components for accuracy.

Are your heaters compatible with major truck brands?
Yes. Our heaters are engineered to work with Freightliner, Kenworth, Peterbilt, Volvo, International, Mack, and other heavy-duty brands—designed to replace or support factory heating systems.

Can I replace only part of a heater system (e.g. the heater core) without changing the whole unit?
Often yes. We stock core inserts, heater housings, and related components separately so you can replace just the worn or failed portion instead of the entire assembly.

What causes heater failure in heavy-duty vehicles?
Common issues include clogged or leaking cores, corrosion, failed valves or actuators, blocked coolant flow, and degraded seals. Regular maintenance and coolant flushing help prevent many failures.