Tag Archives: #truck heater

Truck heater control valves

By Chris Tyson, MACS heavy duty contributor We have several Class 8 trucks in our fleet and when temperatures begin to drop outside many of their owners visit our shop for heater-related repairs. That’s exactly what happened when the operator … Continue reading

Posted in #1234yf, #off road vehicles, Mobile Air Conditioning, Training | Tagged , , , , , , | 1 Comment

My heater won’t work!

MACS member Gordon Marks of Marks Air in Tampa, Florida shares a snap shop from one of his truck heater jobs. This nasty part is from a 1994 Roadmaster wagon with 154,000 miles. Gordon reports he by-passed the heater core, … Continue reading

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