Drew Callahan

It was a Tuesday morning somewhere outside Moab, and I was standing next to the Revel’s battery box when I heard it—that high-pitched whine from the converter, the kind of sound that makes your stomach drop because you know it means something’s pulling too hard and working way too hot. I cracked open the compartment … Read more

Most RV owners think a diesel heater either works or doesn’t — that it’s binary, like flipping a light switch. They assume if heat isn’t flowing, the whole system is shot and needs a dealer visit. That assumption costs money and time. The truth is messier and more useful: your Thor Tranquility’s heating failure is … Read more

I had my Solis sitting in the service bay one afternoon, pulling the mattress platform to access the combustion chamber, when I realized how many owners never dig into this one—and how many times it bites them when the weather turns. The diesel heater on a Winnebago Solis is a genuine asset for shoulder-season travel, … Read more

Skip this repair and your Airstream Interstate 19X becomes a rolling ice box the moment temperatures drop — and you won’t realize how urgent it is until you’re already parked for the night with no backup heat. The diesel heater’s glow plug and fuel pump fail quietly at first: a hesitant spark, a faint clicking … Read more

I’ve got a glow plug sitting on my bench right now—pulled it from a 2022 Revel 44E last month—and you can see exactly where the problem lives: the ceramic tip is cracked, the electrical contact is corroded to a dull bronze, and the threads show the ghost marks of a fuel-fouled chamber. It’s physical proof … Read more

“Drew, my Unity’s diesel heater won’t fire up anymore. I hear the pump trying, but there’s no ignition—just dead silence after a few seconds. Am I looking at a glow plug, or could it be something else?” That was Marcus, texting from somewhere in Oregon, and it’s the exact scenario that separates a warm night … Read more