No hot water in an RV is an uncomfortable problem that gets worse the longer you're at a campsite. Fortunately, most RV water heater failures are straightforward to diagnose and fix on-site. The systematic approach - test gas mode, test electric mode, compare results - tells us exactly where to focus.
A water heater that fails on gas only (pilot won't stay lit or DSI spark fails) but works on electric is a gas system problem. A heater that fails on electric only but works on gas is an element or thermostat issue. A heater that fails on both modes usually indicates a cooling unit issue - in this case, the cooling unit, not the heating source.
Diagnostic Approach for No Hot Water
- Verify bypass valves are in normal position (common after winterization)
- Test gas mode: listen for ignition clicks, watch for flame through sight glass
- Test electric mode: check breaker, measure element resistance with multimeter
- Compare: gas only failure = thermocouple/burner; electric only = element/thermostat; both = check thermostat setpoint or larger issue
Fastest Common Fixes
Thermocouple replacement is the fastest, cheapest water heater fix in our toolkit - 45 minutes and typically $95 to $145. The thermocouple is a safety device that proves the gas flame is present and allows the gas valve to stay open. They fail after years of thermal cycling and are one of the most common RV water heater repairs. We carry Suburban and Atwood compatible thermocouples for same-day repair.
Service area: Apopka, Longwood, Casselberry, Altamonte Springs, Sanford, Lake Mary, DeLand, Deltona, DeBary, Mount Dora, Tavares, Leesburg, and all surrounding communities in Orange, Seminole, Lake, and Volusia counties.
Pricing for RV Water Heater Not Heating
Starting price range: $65 - $385. Flat-rate quote provided before any work begins. Request a free quote online or call (407) 326-5500.
*Estimates only. Final price determined on-site after diagnosis. Parts and labor included in flat rate.
Related Services
Also see: All RV Water Heater Repair services | All RV Repair Services | Apopka Service Area
