RV Furnace Repair
Stuart, FL
Stuart RV Repair fixes Suburban and Atwood LP furnaces on-site across Stuart, FL and the Treasure Coast. Igniter boards, sail switches, blower motors, gas valves. We come to you.
Stuart RV Repair fixes Suburban and Atwood LP furnaces on-site across Stuart, FL and the Treasure Coast. Igniter boards, sail switches, blower motors, gas valves. We come to you.
Stuart RV Repair services and repairs RV furnaces on-site. Suburban and Atwood (Dometic) LP gas furnaces. Igniter boards, sail switches, blower motors, gas valves, and thermocouple replacements. $120-500 depending on the job. We come to you anywhere in Stuart, FL and across the Treasure Coast. Call 772-280-3915. Need other RV A/C and heating repairs? We do those too.
Here's something a lot of RV owners in Stuart don't think about: your furnace only runs maybe 3-4 months a year down here. The rest of the time it sits dormant while Florida's heat, humidity, and insects do their damage. Mud daubers and spiders love building nests inside furnace exhaust tubes during the off-season. When you fire it up that first cold night in November, gas can't flow properly and the furnace locks out.
RV furnaces are forced-air LP gas systems made by either Suburban or Atwood (now owned by Dometic). They work on a specific sequence: the thermostat calls for heat, the control board energizes the blower, the sail switch confirms airflow, the board fires the igniter, the gas valve opens, and the burner lights. If any one of those steps fails, you get no heat. The beauty of this system is that it's logical and diagnosable - the ugly part is that six things can go wrong in a chain.
We service RV furnaces year-round in Martin County, but the busiest stretch is October through January when snowbirds arrive and full-timers need heat on those 40-degree mornings. If you haven't run your furnace since last winter, we strongly recommend a pre-season check before you need it at 2am.
Failed igniter board or bad igniter electrode. The blower is doing its job, but the board isn't sending voltage to the igniter, or the igniter itself is cracked and can't create a spark. We test both on-site. Board replacement is $180-300, igniter electrode is $100-160.
Could be a dead thermostat, blown fuse on the control board, or low 12V battery voltage. RV furnaces need a solid 12 volts to operate. If your house batteries are weak, the furnace is one of the first things to stop working. We check voltage, fuse, and thermostat signal in that order.
The flame sensor (sensing rod) can't detect the flame, so the board shuts off gas as a safety measure. Carbon buildup on the sensor rod is the most common cause. A quick cleaning with fine emery cloth usually fixes it for $80-100. If the rod is cracked, we replace the whole igniter/sensor assembly.
The limit switch is tripping from overheating, the return air vent is blocked, or the sail switch is intermittent. Blocked vents are surprisingly common - storage bins or bedding pushed against the return grille will cause this. We check the ductwork and all safety switches during diagnosis.
This needs immediate attention. A gas smell with no ignition could mean the gas valve is leaking or the burner tube is clogged and gas is escaping through the exhaust before igniting. Shut off your LP tank and call us. We check gas pressures, the valve, and the full combustion assembly. Your safety comes first.
Delayed ignition is the usual suspect. Gas accumulates in the combustion chamber because the igniter is slow to fire, then it all ignites at once with a bang. That's hard on the heat exchanger. A dirty burner orifice, weak igniter, or incorrect gas pressure can cause this. It needs to be fixed before it damages the furnace.
The two main RV furnace manufacturers have different designs, different control boards, and different parts. Here's what we see most in Stuart and across Martin County.
Suburban furnaces are the most common we service. The SF series uses a steel combustion chamber, a DSI (Direct Spark Ignition) board, and a separate sail switch. The control board has diagnostic LEDs that blink error codes - 1 blink for lockout, 2 for flame failure, 3 for airflow issues. These codes make troubleshooting much faster. We carry SF-series boards and sail switches on the truck.
Atwood furnaces (now sold under the Dometic brand) use an aluminum tube-style combustion chamber. The control boards are simpler than Suburban but the parts are more brand-specific. Atwood heat exchangers can develop cracks over time, especially in models from 2008-2015. We inspect the exchanger during every service call because a cracked one can leak exhaust fumes into the living space.
Smaller RVs, van conversions, and pop-ups often use compact furnace models like the Suburban NT-16SQ or the Atwood 8012. These units produce less BTU output but use the same ignition system. Parts are sometimes harder to source because these models have lower production volumes. We can usually get what's needed from our suppliers within 48 hours.
Sometimes the furnace is fine but the LP supply is the problem. Low tank pressure, a stuck regulator, or a thermocouple on the LP tank itself can starve the furnace of gas. We check LP pressure with a manometer at every furnace service call. If your water heater and stove also struggle, it's probably a supply issue, not a furnace issue.
Call 772-280-3915 or request a quote online. Tell us what's happening - no heat, blower runs but no flame, cycles on and off, error codes on the board. If you know the furnace brand and model number (it's on the data plate), that helps us bring the right parts.
Our tech checks LP gas supply, inspects the igniter and control board, tests the sail switch and limit switch, and verifies blower motor operation. You get a written estimate before any work starts. Most furnace diagnostics take 20-30 minutes.
We carry common furnace parts on the truck - igniter boards, sail switches, electrodes, and blower motors. Most furnace repairs are done in 1-2 hours on-site. Gas valve replacements can take a bit longer. You'll have heat before we leave.
| Repair Type | Price Range | Typical Time |
|---|---|---|
| Sail switch replacement | $120-180 | 30-45 min |
| Igniter board / control board | $180-300 | 45-60 min |
| Igniter electrode / sensor rod | $100-160 | 30-45 min |
| Blower motor replacement | $250-400 | 1-2 hrs |
| Gas valve replacement | $300-500 | 1-2 hrs |
| Burner tube cleaning | $80-130 | 30-45 min |
| Full furnace replacement (installed) | $800-1,400 | 3-5 hrs |
Furnace quit on us during a cold snap in January. Called at 7am and the tech was at our site by 10. Turned out mud daubers had blocked the burner tube over the summer. Cleaned it out, replaced a worn igniter, and we had heat by noon. Lifesaver.
Our Suburban furnace kept cycling on and off. Tech found a dirty flame sensor and a partially blocked return vent. Cleaned both, tested everything, and explained what to watch for going forward. The whole visit cost us $95. Can't beat that kind of honest service.
Needed a new control board for our Atwood furnace. The tech had to order it but got it in two days and came back to install. Explained the LED error codes so I'd know what to look for in the future. Professional, fair, and they followed through. We'll call again for sure.
RV furnace repairs in Stuart typically run $120-500 depending on the problem. A sail switch replacement costs $120-180. Igniter board replacement runs $180-300. A blower motor swap is $250-400. Gas valve replacement costs $300-500. We give you a written quote after diagnosing on-site before starting any work.
The three most common causes are a failed igniter board, a stuck sail switch, or an empty LP tank. The igniter board sends voltage to the igniter electrode after the blower proves airflow through the sail switch. If either the board or switch fails, no spark reaches the gas. We also check LP pressure and the gas valve solenoid.
Suburban furnaces use a steel combustion chamber and a separate igniter electrode. Atwood furnaces (now Dometic) use an aluminum tube combustion chamber. The control board logic is different. Suburban boards have LED error codes for faster diagnosis. Atwood boards are simpler but the parts are more brand-specific. We service both brands daily.
If the blower runs but you're getting cold air, the burner isn't igniting. Could be a bad igniter board, failed sail switch, no LP gas, or a clogged burner orifice. Sometimes bugs build nests inside the burner tube during the off-season in Florida. We pull the burner assembly and check everything during a service call.
We recommend annual maintenance before the cool season, which in Stuart usually means October or November. A tune-up includes cleaning the burner tube, checking the igniter, testing the sail switch, inspecting the exhaust vent for blockages, and verifying LP gas pressure. In Florida, bugs love building nests in furnace vents during warm months.
Short cycling is usually caused by a dirty or blocked return air vent, a failing limit switch that trips too early, or a sail switch with intermittent contact. Low battery voltage can also cause cycling because the blower motor slows down and the sail switch can't detect enough airflow. We check all four during a service call.
We handle all RV A/C and heating repairs - rooftop units, capacitors, furnaces, thermostats, and ductwork. If you've got multiple climate control issues, we bundle them into one visit across Stuart and the Treasure Coast.
We cover Martin, St. Lucie, and Palm Beach counties for all RV furnace repairs. From Stuart and Palm City to Jensen Beach, Hobe Sound, and down to Jupiter.
Call us or request a free estimate. We'll get a tech out to your site with the right parts - same or next day. Igniter boards, sail switches, blower motors. All done at your campsite or driveway.