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RV Rooftop AC Repair & Replacement in Palm City

Dead compressor, weak airflow, unit won't kick on. We repair and replace Dometic, Coleman-Mach, and all major rooftop AC brands on-site across Martin County. Capacitor repairs from $85, full replacements from $900.

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What Is RV Rooftop AC Repair?

Your RV's rooftop AC unit is what stands between you and Florida's brutal summer heat. These self-contained systems sit on top of your rig and handle all the cooling for the interior, pulling hot air up through a return vent, running it across an evaporator coil, and pushing cold air back down through the ceiling assembly. When something inside that unit fails, you'll know it fast.

RV rooftop AC repair covers the full range of problems that hit these units. Capacitors that weaken and can't start the compressor. Fan motors that seize up or spin at half speed. Compressors that short out internally. And complete unit replacements when repair costs don't make sense anymore. In Palm City's heat, these components work harder than they would up north, and they wear out quicker because of it.

We service all major brands at your location, including Dometic Brisk, Penguin, and FreshJet models, plus Coleman-Mach 8, 10, and 15 series units. Whether you've got a single-unit travel trailer or a dual-AC motorhome, we'll get your cooling back online. Most component repairs wrap up in under two hours.

TL;DR

RV rooftop AC repair fixes the cooling unit mounted on your roof. Common jobs include capacitor replacement ($85-165), fan motor repair ($150-325), compressor replacement ($275-550), and full unit swaps ($900-2,400). We come to your location anywhere in Martin County. Dometic and Coleman-Mach are our specialty.

Technician replacing a rooftop AC unit on an RV in Palm City FL

What's Involved in Rooftop AC Repair

1

System Diagnosis

We check the thermostat signal, measure voltage at the unit, test the capacitor with a capacitance meter, and verify compressor amp draw to isolate the failed component.

2

Access the Rooftop Unit

We remove the shroud cover on top and the ceiling assembly inside to access all internal components. Gasket condition and mounting bolts get inspected at the same time.

3

Repair or Replace

Failed parts get swapped out. For full unit replacement, we remove the old unit, prep the roof opening, set the new unit with a fresh gasket, and wire it in.

4

Performance Test

We run the unit through a full cooling cycle, check the temperature split between supply and return air, verify amp draw is within spec, and make sure the condensate drains properly.

Rooftop AC Repair Pricing

Service Price Range
Capacitor Replacement $85 - $165
Fan Motor Repair/Replacement $150 - $325
Compressor Replacement $275 - $550
Full Unit Replacement $900 - $2,400

Final pricing depends on your unit's brand, BTU rating, and parts availability. You'll get a firm quote before we start.

Signs Your Rooftop AC Needs Repair

Catching AC problems early saves you from a complete unit replacement. Watch for these warning signs that something's going wrong with your rooftop unit:

RV AC unit not cooling properly and needing repair service in Palm City

Rooftop AC Repair FAQs

How much does RV rooftop AC repair cost in Palm City?

It depends on which component failed. A capacitor replacement runs $85-165, fan motor repair costs $150-325, and compressor replacement ranges from $275-550. If the whole unit needs swapping out, a full rooftop AC replacement runs $900-2,400 depending on brand and BTU rating. We'll diagnose the problem and give you a firm quote before starting.

Should I repair or replace my RV rooftop AC unit?

Generally, if your unit is under 8 years old and just needs a capacitor or fan motor, repair makes sense. If the compressor is shot and the unit is over 10 years old, replacement is usually the better investment. We'll walk you through the math on both options so you can make the call that fits your budget and plans for the RV.

How long does it take to replace an RV rooftop AC unit?

A full unit swap typically takes 2-4 hours. That includes removing the old unit from the roof, cleaning the mounting surface, checking the gasket seal, installing the new unit, and running it through a complete test cycle. If the ceiling assembly inside the RV also needs replacing, add another hour or so to the job.

Why is my RV AC running but not blowing cold air?

Several things can cause this. A failed compressor won't pump refrigerant. A bad capacitor means the compressor can't start. Low refrigerant from a leak reduces cooling. A frozen evaporator coil blocks airflow. Dirty condenser coils on the roof reduce heat transfer. We check all of these during diagnosis to pinpoint the actual cause before recommending a repair.

What brands of RV rooftop AC do you service?

We work on all major brands including Dometic, Coleman-Mach, Advent Air, ASA Electronics, and Furrion. Dometic and Coleman-Mach make up roughly 85% of the units we see in Martin County. We keep common parts for both brands stocked so most repairs can be completed the same day.

Can you add a second rooftop AC to my RV?

Yes, as long as your RV has a second roof opening prepped for it and your electrical system can handle the additional load. Most 50-amp RVs can support two AC units without modifications. If you're on a 30-amp system, you'll need to manage which unit runs at a time, or we can discuss an upgrade to handle both units running simultaneously.

My RV AC makes a loud buzzing noise when it starts. What's wrong?

A buzzing or humming sound at startup usually points to a failing capacitor or a compressor that's struggling to engage. The capacitor gives the compressor the extra electrical kick it needs to start running. When it weakens, the compressor tries to start but can't quite get going. That's the buzz you're hearing. If left alone, it'll eventually burn out the compressor too.

Rooftop AC Not Cooling? We'll Fix It

Florida heat doesn't wait, and neither should you. We'll come to your location, diagnose the problem, and give you a firm price before any work starts.

Call 772-271-5270
How to change an RV rooftop AC unit with professional repair service in Palm City