Drew Callahan · March 18, 2026
Is your Fleetwood Discovery’s AC running but barely pushing air, or are you getting nothing but a hum when you flip it on? Chances are you’re staring at either a shot capacitor or a fan motor that’s given up the ghost—and the difference between those two repairs is the difference between a quick roadside fix … Read more
Drew Callahan · March 18, 2026
It was mid-October when I pulled into a rest area outside Flagstaff with a Discovery I’d just picked up for a flip. Temps were dropping fast at that elevation, so I fired up the furnace to test it — and got nothing but a weak click and a smell like stale propane. The igniter was … Read more
Drew Callahan · March 17, 2026
Walk into a Newmar dealership service bay and ask about a furnace igniter failure on a King Aire, and you’ll hear one story: “Control board is toast, we need to replace the whole assembly, that’s a $600 service call plus parts.” Log onto an RV forum and you’ll hear the opposite: “Igniter electrode always goes … Read more
Drew Callahan · March 17, 2026
The Newmar King Aire pulls its cooling load through a Dometic rooftop unit that was engineered for reliability, but like every AC system mounted that high and that exposed, it lives on borrowed time once the run capacitor starts to age. I’ve watched owners sit in 115-degree heat waiting weeks for a dealer service slot … Read more
Drew Callahan · March 17, 2026
Your American Coach American Eagle’s owner’s manual doesn’t flag it, and most dealer service advisors won’t mention it until the bill arrives: a failed run capacitor on the rooftop AC unit almost never travels alone. What looks like a simple $60 part swap—and what I’ve seen quoted at $400+ in labor—is actually a diagnostic checkpoint. … Read more
Drew Callahan · March 16, 2026
I’m standing on the ladder with my head tilted up into the rooftop AC when I hear it—that thin, almost apologetic hum. The compressor’s running fine, pushing refrigerant through the lines, but the fan isn’t spinning the way it should. It’s moving, sure, but lazily, like it’s fighting through molasses. Twenty seconds in, maybe thirty, … Read more
Drew Callahan · March 16, 2026
Most American Coach American Eagle owners assume their Suburban SF-series furnace will simply work when they turn up the thermostat — that it’s built tough enough to soldier through season after season without complaint. That assumption costs people sleep on cold nights. A furnace igniter that fails doesn’t fail gently; it fails completely, and suddenly … Read more
Drew Callahan · March 15, 2026
I’ve got my work setup spread across a concrete pad behind bay two at the storage facility where I keep the current rig — socket set hanging on the pegboard, laptop propped on an old toolbox, and a parts catalog open whenever I’m troubleshooting a system that’s gone sideways. Pulled a blackened Suburban igniter electrode … Read more
Drew Callahan · March 15, 2026
Skip this repair and your Tiffin Allegro Bus AC won’t just underperform—it’ll trap you in a rig that either won’t cool at all or keeps nuking your breaker every time you fire it up. A weakening capacitor or dragging fan motor is the kind of failure that sneaks up: one week the AC is sluggish … Read more
Drew Callahan · March 14, 2026
I’ve got a capacitor sitting on my bench right now—pulled it off a Dutch Star that rolled through last week. The casing is bulged on one side, and if you look at the solder joints where it connects to the fan motor circuit board, they’re cracked and discolored from heat cycling. That’s what a dead … Read more
