RV furnace and water heater repair, at your site.

What usually fails

Furnaces and water heaters (Suburban and Atwood/Dometic are the common brands) fail from sitting, dust, and desert critters as much as from wear:

• Ignition failures — the furnace blower runs, clicks, and gives up: dirty burner, failed igniter, or a sail switch choked with dust after months of storage.
• Mud daubers and desert debris — wasps build in furnace and water heater vents all summer; the first cold night of the season is when the blockage announces itself.
• Control board faults — the classic 'three tries and lockout,' or a water heater that lights on propane but not electric (or the reverse).
• Water heater element and anode — Arizona's hard water eats anode rods fast and scales elements; a neglected anode means the tank itself becomes the anode.
• Thermostat and limit-switch failures — short-cycling furnaces and lukewarm water are often controls, not combustion.
• Propane delivery problems — a tired regulator starves both appliances at once; if the furnace and water heater sulk together, look upstream.

Symptoms worth calling about

• Furnace blower runs but no heat, or it locks out after a few tries
• No hot water, or water that's hot for two minutes then cold
• Water heater works on one power source but not the other
• Sulfur/rotten-egg smell from hot water (scaled, bacteria-friendly tank)
• Furnace fine in October, dead in January — the storage-debris pattern
• Clicking, soot at the vent, or a yellow, lazy flame

What a mobile tech can and can't do on site

On site: full ignition-sequence diagnosis, burner and igniter service, vent clearing (including dauber nests), control board and sail/limit switch replacement, water heater element/anode/thermostat service, tank flush, and regulator and propane-pressure testing.

Honest limits: a cracked furnace heat exchanger is a replace-the-furnace conversation — carbon monoxide risk means no responsible tech patches one. Likewise a rusted-through water heater tank is a replacement, not a repair. Both can usually be quoted on the spot; the swap itself may need a follow-up visit with the new unit.

Have this ready when you reach out

• Brand if you can read it (data plate inside the furnace/water heater door)
• Propane, electric, or both — and which source fails
• The exact sequence: what runs, what clicks, what stops, and after how long
• Propane tank level (genuinely — it rules out the embarrassing one first) and where the RV is parked

The arrival-season pattern

More Arizona furnace and water heater failures are discovered in October than in January — because October is when thousands of rigs get opened after summer storage and every appliance gets its first real test in months. Run both appliances during your first 48 hours in the rig, not on the first cold night when every other arrival is doing the same. Our snowbird arrival prep guide walks through the order to test things in.

City by city

Where this work comes up most — and what makes it different there:

• RV furnace repair in Tucson — the coldest occupied-rig nights in our coverage area.

Other services

Get a mobile tech to look at it

Tell us what's happening and where the RV is parked, and we'll match you with one local mobile technician for your area — not a shared list of companies.

Educational note: any cost ranges mentioned on this site are typical, general information only. Your technician confirms the service-call fee and an exact quote directly with you before work begins.