What We Repair
RV HVAC systems are built different than what's in your house. They're smaller, they run on multiple power sources, and they take a beating from road vibration and weather. You need a tech who actually understands these systems. We've been working on RV heating and cooling for years, and we know exactly what fails and why.
RV AC not cooling? Furnace won't light? We repair all RV heating and cooling systems in Fort Pierce, from rooftop AC units and furnaces to thermostats and ductwork. Mobile service, most repairs done same-day. Call 772-677-6762.
Rooftop AC Repair & Replacement
Your rooftop unit is the single hardest-working piece of equipment on your RV down here. We fix capacitors, fan motors, compressors, and control boards on all brands. Dometic, Coleman, Advent, Furrion. If it's past saving, we handle full unit swaps too. Usually runs $800-1,400 for a complete replacement including labor.
Furnace Diagnosis & Service
Those cold January mornings in Fort Pierce aren't fun without heat. We diagnose and fix Suburban, Atwood, and Dometic furnaces. Sail switches, ignition boards, blower motors, gas valves. Mud dauber wasps love building nests in furnace exhaust tubes around here, and that's one of the most common calls we get.
Thermostat Replacement & Calibration
An off thermostat can make your whole system run wrong. Maybe it reads 72 but your rig feels like 80. Or it short-cycles the AC every few minutes. Thermostat issues sometimes trace back to RV electrical wiring problems, so we check the full circuit. We install and calibrate both analog and digital thermostats, including Dometic CT and Micro-Air EasyStart compatible units. Takes about 30-45 minutes for most swaps.
Refrigerant Recharge & Leak Repair
Low refrigerant means poor cooling and a compressor that's working way too hard. We do pressure tests, locate leaks with electronic detectors and dye, braze or replace damaged lines, and recharge to factory specs. A slow leak left alone will kill a compressor, and that's a $400-600 repair you don't want.
Ductwork Inspection & Repair
RV ductwork runs under the floor, through cabinets, and along the ceiling. Road vibration loosens connections. Mice chew holes. Tape dries out and lets go. If some rooms are hot while others are cold, you've probably got a duct problem. We inspect the entire run, seal leaks, and replace damaged sections.
Heat Pump Service
Heat pumps give you both cooling and heating from one rooftop unit. Great for Florida's mild winters. But the reversing valve, defrost board, and auxiliary heat strips add complexity. We service all heat pump brands and can troubleshoot the switchover problems that confuse a lot of shops.
Ventilation & Fan Motor Replacement
Bathroom vents, roof fans, Fantastic Fans, MaxxAir covers. These keep air moving and moisture out, which matters a lot in Florida's humidity. We replace burnt-out motors, fix speed controllers, install rain sensors, and swap entire vent assemblies. Some ventilation issues overlap with RV appliance repair when exhaust fans feed into appliance zones. Most fan motor jobs run $100-200 for parts and labor.
Climate Control System Upgrades
Want to add a second AC? Install soft-start kits so you can run AC on a smaller generator? Upgrade to a digital thermostat? Add zone control? We handle all of it. Soft-start kits like the Micro-Air EasyStart run about $300-400 installed and let you run your AC on a 2,000-watt generator. Game changer for boondocking.
Common Problems We Fix
AC Running Constantly But Never Getting Cold Enough
We hear this one all summer long. It's 95 outside, the AC hasn't shut off in three hours, and the rig is still 82 degrees. First thing we check is the evaporator coil. Florida pollen, campground dust, and pet hair clog those fins fast. A good cleaning alone can drop your interior temp by 5-8 degrees. After that, we check the start and run capacitors. A weak capacitor makes the compressor strain, and you lose cooling capacity even though the fan's still blowing. We also check your roof gasket and shroud for gaps. A lot of rigs develop small openings around the rooftop unit over time, and hot attic air pours in through those gaps. Finally, if the unit is more than 10-12 years old and the refrigerant charge is low, it might be time to have a conversation about replacement versus repair.
Furnace Clicking On But Not Igniting
You hear the blower start, the sail switch clicks, and then nothing. No flame, no heat, and the unit locks out after three tries. This is usually one of three things. The most common culprit in Fort Pierce? Mud dauber wasps. They build nests inside the furnace exhaust tube during warm months, and when you fire up the furnace on a cool night, the exhaust can't vent and the unit shuts down on safety. We clear the blockage, test the high-limit switch, and check the igniter board. If the igniter itself is weak, it'll glow but not get hot enough to light the gas. We carry replacement boards for most Suburban and Atwood furnaces, so this is usually a same-day fix. Runs about $150-300 depending on whether it's just a cleaning or a board swap.
Thermostat Reading Wrong or System Short-Cycling
Short-cycling is when your AC or furnace kicks on, runs for two or three minutes, shuts off, then starts again. It drives you crazy, and it's hard on the equipment. Sometimes it's a thermostat that's gone bad or lost its calibration. Older analog stats drift over time, especially in the Florida humidity. Other times the thermostat is mounted too close to a vent or in direct sunlight through a window, so it gets a false reading. We'll diagnose whether it's the stat, the placement, or an underlying system issue, then fix it properly. A new digital thermostat installed and calibrated usually runs $120-250.
Uneven Temperatures Throughout the RV
Front of the rig is freezing while the bedroom is warm. Or vice versa. Nine times out of ten, this is a ductwork problem. The flex duct under your RV floor gets kinked when slides go in and out. Rodents chew holes in it. The foil tape at connections dries out and lets go, dumping conditioned air under the floor instead of into the room. We crawl under and inspect every inch of the duct run, patch or replace damaged sections, and re-balance the airflow. It's not glamorous work, but it makes a huge difference in comfort.
How Our Mobile Repair Works
Call or Book Online
Tell us what's going on. Is the AC not cooling? Furnace not lighting? Weird noises? The more details you give us, the better we can prepare. We'll set up a time that works for you, and same-day service is often available if you call before noon.
On-Site Diagnosis
Our tech arrives with a fully equipped service truck. We run diagnostics on your HVAC system, check electrical draws, test components, and pinpoint the issue. You'll get a clear explanation of the problem and a firm price before we touch anything.
Repair & Verify
We do the repair right there. Once it's done, we run the system through a full cycle, check temperatures, verify amperage draws, and make sure everything's operating within spec. You get a warranty on parts and our work, and your rig is comfortable again.