Electrical and Systems
RV Water Heater Service, Repair and Replacement
Typical range
$350 to $4,500
Shop hours
1 to 18
Labor rate
$260/hr
The short answer
Water heater service covers no-hot-water faults, igniter and thermostat failures, anode and tank service, bypass valve repair, and replacement including tankless conversions. Work runs $350 to $4,500, or 1 to 18 hours at $260 per hour plus parts.
01
What this work actually involves
Tank water heaters fail in a predictable order. The anode rod goes first on Suburban units with a steel tank, and once it is consumed the tank starts corroding from the inside, which is why an anode that has not been checked in five years usually means the tank is on borrowed time. Atwood tanks are aluminum clad and use no anode, which is a common source of confusion when an owner goes looking for a rod that was never there. Getting the right answer starts with identifying the unit, not guessing at the part.
The electrical and gas faults are separate paths and owners often conflate them. A unit that heats on 120V electric but not on LP has an igniter, gas valve, or pressure problem. A unit that heats on LP but not on electric has usually failed the heating element or its thermostat, and the most common cause of that is switching on the electric side with the tank empty or bypassed, which burns the element in seconds. We see that every spring after de-winterizing, particularly on coaches that wintered in Big Bear, Victorville, or Lancaster where freeze protection actually matters.
Freeze and scale are the two Southern California hazards. High desert nights split water heater tanks and crack drain fittings on units that were not properly winterized, and the damage does not show until the system is repressurized. Hard water throughout the Inland Empire scales the tank interior and the pressure relief valve, and a relief valve that weeps is more often scaled than it is faulty. Tankless conversions solve the scale-in-tank problem but bring their own flow and pressure requirements, so we check whether your pump and plumbing support one before recommending it.
Systems and brands we work on: Suburban, Atwood, Truma, Dometic.
Location: All work is performed at our Yorba Linda facility. We do not offer mobile, roadside, or fleet route service.
02
What the job includes
- Separate diagnosis of LP and 120V electric heating paths
- Igniter, control board, gas valve, and thermostat replacement
- Heating element and element thermostat replacement on electric units
- Anode rod inspection and replacement on steel tank units
- Tank flushing, descaling, and pressure relief valve service
- Bypass valve repair and winterizing plumbing correction
- Freeze damaged tank, fitting, and line replacement
- Burner tube cleaning and combustion air path clearing
- Full tank water heater replacement with door and flange fitting
- Tankless conversion including flow, pressure, and gas supply evaluation
03
When you need this service
- No hot water on LP but the electric element still heats, or the reverse
- Water heater lights and then locks out on the control board
- Rusty, discolored, or smelly hot water at the fixtures
- Pressure relief valve weeping or discharging continuously
- Water pooling in the water heater compartment or below the unit
- Anode rod that has never been checked or is consumed to the core wire
- Water heater that worked before winterizing and does nothing after
04
How we do it, step by step
- 01
Identify the unit
Make, model, and tank material identified first. Steel tanks use an anode and aluminum clad tanks do not, and the entire service path differs between them.
- 02
Split the heat sources
LP and electric paths tested independently so we know which side has failed. Owners frequently report no hot water when only one of the two sources is down.
- 03
Tank and fitting inspection
Tank drained and inspected for scale, corrosion, and freeze cracking, with the anode pulled and measured on steel tank units.
- 04
Gas and combustion check
Burner tube cleaned, combustion air path cleared, and delivered LP pressure measured under demand before any control component is replaced.
- 05
Repair or replacement decision
On a corroded or freeze cracked tank we price replacement against repair, and we discuss whether a tankless conversion makes sense for how you actually use hot water.
- 06
Install, fill and leak test
Unit installed and sealed at the flange, system filled and pressurized, every fitting checked for leaks, and both heat sources cycled before delivery.
05
Pricing and posted rates
| Item | Rate or range | Notes |
|---|---|---|
| Typical job range | $350 to $4,500 | Varies with extent of damage and parts availability |
| Shop hours | 1 to 18 | Quoted after teardown, not before |
| Mechanical and electrical labor | $260 per hour | 2026 posted rate |
| Parts | 100% markup under $100, 35% over | Special order parts require a non refundable deposit at order |
| Deposit | 50% at authorization over $2,000 | Additional 25% when parts arrive on jobs over $10,000 |
| Sales tax | 7.75% on parts and materials | Labor is not taxed |
Insurance billed jobs may be billed at carrier negotiated labor rates that differ from the posted retail rates above. See all posted rates.
06
On the insurance side
A tank or fitting that split from freezing and then flooded a floor is often evaluated as a sudden water loss. We document the failure point and the moisture path separately from the appliance repair so the water damage can be assessed on its own.
07
Vehicles we do this work on
Vehicle
Class A Gas Motorhomes
A Class A gas motorhome is a flat-front coach built on a Ford F53 or Workhorse front-engine chassis, typically 28 to 38 feet. Rear
Vehicle
Class C Motorhomes
A Class C is a coach body built onto a cutaway van chassis with a sleeping or storage cabover extending above the factory cab. Tha
Vehicle
Standard Fifth Wheels
A fifth wheel couples to a hitch in the truck bed through a kingpin and pin box, with a raised forward bedroom over the truck. The
Vehicle
Travel Trailers
A travel trailer tows from a ball hitch behind the tow vehicle rear axle on an A-frame tongue, which makes it the most sway-prone
Vehicle
Truck Campers, Slide-In
A slide-in truck camper sits in a pickup bed and is clamped down at four points, so it absorbs the truck frame twist directly. Jac
Vehicle
Camper Van Conversions
Camper van conversions are Sprinter, Transit, or ProMaster chassis with windows cut into the sidewalls, a roof full of penetration
Vehicle
Park Model RVs
A park model is a towable unit up to roughly 400 square feet built with residential windows, roofing, and finishes, designed to si
08
Questions about water heater service and replacement
Frequently asked questions
How much does RV water heater replacement cost?
Work runs $350 to $4,500, or 1 to 18 hours at $260 per hour plus parts. An anode replacement with a tank flush is at the low end. A tankless conversion with new gas supply sizing, plumbing modification, a new exterior door and flange, and freeze protection is at the high end.
Do I have an anode rod or not?
It depends on the tank. Suburban units use a steel tank with a sacrificial anode rod that needs inspection roughly annually and replacement when it is consumed. Atwood tanks are aluminum clad and use no anode at all. Installing an anode where the manufacturer did not intend one is a common and expensive mistake.
I burned out my element right after de-winterizing. Why?
Because the electric side was switched on with the tank bypassed or empty. The element heats extremely fast with no water around it and fails in seconds. It is the single most common spring failure we see. Fill the tank and confirm water at a hot fixture before energizing the electric side, every time.
Is a tankless conversion worth it?
It is if you want continuous hot water and you are tired of anodes and scale in a tank. The caveats are real though. Tankless units need adequate water flow and pressure to fire, which a marginal 12V pump may not deliver, and they need a properly sized gas supply. We evaluate pump, plumbing, and gas capacity before recommending one.
My relief valve keeps dripping. Is the tank bad?
Usually not. Inland Empire water is hard, and scale on the relief valve seat is the most common cause of weeping. It can also be normal thermal expansion when the tank has no air pocket at the top. We check the air pocket, service or replace the valve, and only then start looking at the tank itself.
09
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Ready to move on water heater service and replacement? Bring it to Yorba Linda.