Running a diesel or gasoline heater at over 2,200 meters / 7,500 feet can lead to choking

Running a diesel or gasoline heater at over 2,200 meters / 7,500 feet can lead to choking. This is when the engine sooths up, with deposits of soot and debris building up inside the engine. This can lead to loss of performance or even cause your heater to malfunction.

For Espar heaters, the solution is simple - adding an Espar High Altitude Kit (HAK) to your airtronic or hydronic heater. The Espar HAK has an inbuilt air pressure sensor which can accurately measure altitude. As the altitude changes, the Espar HAK automatically adjusts the oxygen and fuel mixture that is sprayed into the combustion chamber. This ensures your heater does not soot up and maintains performance level. The Espar HAK is compatible with any Espar airtronic or hydronic heaters marked with a silver H-kit label (and can be installed to those without a H-kit label if the ECU is replaced), and is one of the few high altitude kits for vehicle heaters on the market.