A Georgia summer doesn't wait for a service appointment, and neither should you. When the rooftop unit on your travel trailer or motorhome starts blowing warm air at a Lake Lanier campground in July, the humidity makes it miserable fast. Tristan's Mobile RV Repair comes to you with the gauges, capacitors, and know-how to get cool air moving again without a tow to a shop.
Most RV AC problems come down to a handful of usual suspects: a failed start capacitor, a seized compressor, a clogged condenser coil packed with pollen and road grime, or a thermostat that's simply worn out. Tristan works through these systematically instead of guessing, so you're not paying to swap parts that were never the problem.
Signs you need ac repair
- AC runs but only blows warm or barely-cool air
- Unit hums or clicks but the compressor never kicks on
- Breaker trips repeatedly when the AC starts
- Ice forming on the coil or water dripping from the ceiling vent
- Thermostat display is unresponsive or readings seem wrong
- Unusually loud rattling, squealing, or grinding from the rooftop unit
- Unit cycles on and off rapidly instead of running a full cooling cycle
What Tristan does
Diagnostics
Tristan checks amp draw, capacitor health, refrigerant-side temperature split, and control board signals to pinpoint whether the issue is electrical, mechanical, or a simple airflow restriction before recommending any repair.
Component repair and replacement
Common fixes include replacing start/run capacitors, fan motors, thermostats, and control boards, plus clearing debris from condenser coils that have been sitting under trees at a storage lot.
Full unit replacement
When a rooftop unit is beyond a reasonable repair, Tristan removes the old unit and installs a new one matched to your roof opening and gasket, then verifies the ductwork seals correctly.
Post-repair testing
Every job wraps up with a run cycle under load, checking amp draw and vent temperatures to confirm the unit is actually cooling the way it should, not just running.
Why mobile beats hauling it to a dealer
Rooftop AC units are awkward and sometimes dangerous to inspect without the right ladder setup and roof safety habits, and towing a trailer across metro Atlanta traffic just to have someone look at a capacitor wastes a day you don't have. Tristan brings the ladder, meter, and parts to your driveway, storage lot, or campsite.
Because he's already on your roof for the diagnosis, he can often complete the repair in the same visit rather than scheduling a return trip once parts are confirmed, which matters when you're mid-trip at Lanier or trying to get back on the road before a race weekend at Road Atlanta.
Relevant training
- Dometic certification
- Certificate in all-around RV repair
Questions we get asked
- Can you work on both Dometic and Coleman rooftop units?
- Yes, Tristan services most common rooftop AC brands found on travel trailers and motorhomes, including Dometic and Coleman-Mach systems.
- Do I need to be home during the repair?
- It helps to have access to the RV and its power source, but many customers leave the rig at a storage lot or campsite and coordinate access by phone.
- Why does my AC trip the breaker when it starts?
- That's often a sign of a weak start capacitor or a compressor working harder than it should, which Tristan can usually confirm on site with a load test.
- Can you replace a unit with a different brand or size?
- In most cases yes, as long as the new unit fits your roof opening and ducted or non-ducted setup; Tristan can talk through options for your specific rig.
Areas we serve for this service
Cities & areas
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