BUNK HEATERS

Bunk Heaters For Peterbilt Trucks

For long-haul drivers spending nights in the sleeper, a reliable bunk heater is essential — both for comfort and for compliance with anti-idling regulations that have expanded across states and municipalities. Diesel-fired bunk heaters like those from Webasto and Espar provide efficient heat without running the main engine, cutting fuel costs significantly versus overnight idling. We carry bunk heater units, replacement parts, and accessories for Peterbilt sleeper cab applications.

Frequently asked questions about bunk heaters

How much fuel does a diesel bunk heater use compared to idling the engine?

A diesel-fired auxiliary heater typically consumes 0.1–0.2 gallons of fuel per hour, compared to 0.8–1.0 gallons per hour for a typical idling Class 8 engine. Over a 10-hour rest break, that difference adds up to 6–8 gallons of diesel saved — a significant operational cost reduction for fleets and owner-operators running in cold climates regularly.

Are bunk heaters compliant with anti-idling laws?

Yes. Certified auxiliary heating systems are explicitly exempt from anti-idling restrictions in most states, including California, New York, and other states with the most restrictive idling laws. Keeping documentation of your bunk heater installation on file is good practice for roadside verification. Always confirm compliance with the specific regulations in the states and municipalities where you operate.

How do I troubleshoot a bunk heater that won't fire?

Start by checking fuel supply, the glow plug, and the fuel metering pump — these are the most common failure points on diesel-fired heaters like the Webasto Thermo Top or Espar Airtronic. Many modern bunk heaters have onboard diagnostic fault codes accessible through the controller display that can pinpoint the failed component. A clogged fuel filter or a weak glow plug are responsible for the majority of no-start conditions.

Other parts you might need

Shop block heaters & accessories for Peterbilt trucks