RV Converter & Inverter Repair in Sebastian
Converter diagnostics, inverter installation, multi-stage charging upgrades, and pure sine wave conversions. Mobile service across Indian River County.
TL;DR
- Converter and inverter diagnostics, repair, and full replacement
- Multi-stage charging upgrades and pure sine wave inverter installation
- Pricing from $200 to $1,200 depending on unit type and wattage
- Solar charge controller integration for off-grid systems
- Same-day mobile service in Sebastian and surrounding Indian River County cities
The Brains of Your RV's Electrical System
Your converter and inverter are the two devices that translate power between the AC and DC sides of your RV. They don't get much attention until they fail, and then everything falls apart fast. No converter means your batteries won't charge when you're plugged in. No inverter means you can't run household outlets when you're off-grid. Either failure can ruin a trip in a hurry.
We see converter and inverter failures spike during the hottest months in Indian River County. From June through September, ambient temperatures push these units harder than they were designed for. The cooling fans run nonstop, internal capacitors dry out faster, and thermal cycling stresses solder joints until they crack. If your converter or inverter is mounted in an enclosed compartment with poor airflow, it's working even harder.
What a Converter Does
Your converter takes 120-volt AC power from your shore connection and converts it to 12-volt DC. That 12-volt power charges your house batteries and simultaneously runs every 12-volt device on board: lights, the water pump, the furnace blower, slide motors, and the control boards in your refrigerator and water heater.
Most factory converters are basic single-stage units that push a fixed voltage into your batteries regardless of their state of charge. That's a problem. Overcharging boils the electrolyte out of lead-acid batteries. Undercharging leaves sulfation on the plates. Either way, your batteries die years earlier than they should. A quality multi-stage converter cycles through bulk, absorption, and float phases to match the charging profile to what your batteries actually need.
Common converter failures include blown cooling fans (the number one issue we see), failed rectifier diodes that cause low or no 12-volt output, and circuit board damage from power surges. A converter that's buzzing, running hot to the touch, or putting out less than 13.2 volts at the battery terminals is on its way out.
What an Inverter Does
An inverter does the opposite of a converter. It takes 12-volt DC power from your batteries and converts it to 120-volt AC so you can run household outlets, your microwave, your TV, and your coffee maker when you're not plugged into shore power. Not every RV comes with an inverter from the factory, but they're one of the most popular upgrades we install.
Inverters come in two types: modified sine wave and pure sine wave. A modified sine wave inverter produces a stepped, choppy waveform that works fine for basic loads like incandescent lights and simple motors. But it can cause problems with sensitive electronics. CPAP machines may throw errors. LED TVs may buzz. Laptop chargers may overheat. A pure sine wave inverter produces clean, smooth power identical to what you get from a wall outlet. It costs more, but it runs everything without issues.
Sizing Your Inverter
Inverter sizing depends on what you want to run simultaneously. A 1,000-watt inverter handles a TV, a laptop charger, and a few lights. A 2,000-watt inverter adds the ability to run a microwave or a small coffee maker. A 3,000-watt inverter can handle most everything except an air conditioner. We'll help you calculate your actual load so you don't overspend on capacity you won't use.
Keep in mind that a 2,000-watt inverter pulling full load draws about 170 amps from your 12-volt battery bank. That's a lot of current. Your battery cables, fuse block, and battery capacity all need to support that draw. We've seen plenty of DIY inverter installs that used undersized wiring, which creates a fire risk. We always verify the entire circuit from battery to inverter when we install or replace one.
Solar Integration
If you have or are planning a solar setup, your converter and inverter need to work alongside your solar charge controller without conflict. Some older converters fight with solar charge controllers for battery charging priority, which can damage both units. Modern inverter-charger combo units from brands like Victron and Magnum handle solar integration cleanly. We set up communication between your solar controller and inverter-charger so they share the load intelligently.
What Converter and Inverter Repair Costs
Converter repair for a fan replacement or loose connection runs $200 to $350. A full converter replacement costs $250 to $600 depending on amperage rating. Inverter repair runs $200 to $400 for minor issues. A full inverter replacement ranges from $400 for a 1,000-watt modified sine unit to $1,200 for a 3,000-watt pure sine wave model. Combo inverter-charger installations run $800 to $1,200. All pricing includes installation, wiring, and load testing on site.
Patrick Lee carries the most common converter and inverter models on the truck. About 70 percent of these jobs get completed in a single visit. For less common brands or higher-wattage units, we'll order the part and return within 2 to 3 business days.
Converter & Inverter Repair FAQ
A converter takes 120-volt AC power from your shore connection and converts it to 12-volt DC to charge your batteries and run your 12-volt systems like lights, fans, and the water pump. An inverter does the opposite: it takes 12-volt DC from your batteries and converts it to 120-volt AC so you can run household outlets, TVs, and microwaves when you're not plugged in. Some newer RVs have a combo inverter-charger unit that handles both directions in a single box.
Converter failure symptoms include batteries not charging when plugged into shore power, 12-volt lights flickering or dimming, a loud humming or buzzing from the converter location, and the cooling fan running nonstop or not at all. Inverter failure symptoms include no power at 120-volt outlets when running on batteries, a clicking or alarm sound from the inverter, the inverter shutting off under light loads, and distorted power that causes devices to buzz or malfunction.
It depends on the age and type of failure. If the unit is under 5 years old and the issue is a blown fuse, bad fan, or loose connection, repair is usually the better call at $200 to $350. If the unit is over 7 years old, has internal board damage, or was hit by a power surge, replacement makes more sense. Replacement converters run $250 to $600. Replacement inverters run $400 to $1,200. We'll always tell you which option gives you the best value.
Yes, for most RV owners. A modified sine wave inverter costs less but produces a choppy power waveform that can damage or malfunction sensitive electronics. CPAP machines, laptop chargers, LED TVs, and microwave ovens can all have problems on modified sine wave power. A pure sine wave inverter produces clean power identical to what comes from your shore power connection. The price difference is typically $150 to $300, and it protects equipment worth thousands.
A quality converter typically lasts 8 to 12 years with proper ventilation. In Florida heat, that drops to 6 to 10 years because the cooling fan works harder and the internal components run hotter. Inverters last about the same. The number one killer is heat buildup from blocked ventilation, followed by power surge damage from campground pedestals. Keeping the area around your converter and inverter clear and using a surge protector extends their life significantly.
The main factors are the type of unit, its wattage rating, and accessibility. A basic 35-amp converter replacement runs $250 to $400. A 55-amp multi-stage converter runs $350 to $600. Inverters range from $400 for a 1,000-watt unit to $1,200 for a 3,000-watt pure sine wave model. If the unit is installed in a tight compartment that requires removing other components to access, labor adds $50 to $150 to the job. All pricing includes installation, wiring, and load testing.