RV Plumbing Repair in Denver, CO

RV Plumbing Repair in Denver, Colorado — Freeze Damage, Pipe Repair & Winterization

Denver's winters are among the most punishing in the lower 48 for RV water systems. The city's elevation means hard freezes arrive earlier in autumn and linger later into spring, and nighttime temperatures regularly drop below 15°F — sometimes well below zero during polar vortex events. When water freezes inside PEX supply lines, the expansion pressure can split fittings, crack the pump housing, and rupture the inlet at the water heater. Many Denver RV owners discover the damage in spring when they de-winterize and turn the pump on, only to find water spraying from multiple locations inside the walls and under the dinette. We respond to burst-pipe emergencies and perform thorough spring de-winterization inspections throughout the metro.

Emergency Frozen Pipe Repair

When you call us for a frozen or burst line situation, our first priority is to prevent further damage. We advise you not to run the water pump until we arrive, as pumping water through a compromised line accelerates flooding inside wall cavities. Our technicians arrive with heat guns and thermal cameras to identify every frozen or split section, then bypass or replace the affected PEX runs. Shurflo 4008-series and Aquajet pump repairs are particularly common after Denver freeze events — the pump diaphragm cracks when frozen water expands inside the pump body. We carry replacement pump assemblies for all major manufacturers and can typically restore your water system in a single visit.

City water inlet assemblies are another freeze casualty. The plastic body around the inlet check valve splits when water in the inlet fitting freezes solid. We replace these with brass-bodied inlets when available — they survive freeze events significantly better than the OEM plastic versions found on most production coaches.

Holding Tank, Valve, and Water Heater Service

Gray and black tank slide valves that were left partially open during a freeze event often crack and allow waste to leak past the valve seat. We replace Valterra and Thetford gate valves on-site, which requires temporarily blocking the tank — a task that requires proper tools and experience to complete without creating a larger mess. We also service tank sensors using Tank Techs RX solution to clear fouled sensors that give incorrect level readings after a Colorado camping season.

Atwood (now Dometic) and Suburban water heaters in Denver require annual anode rod service — the rod sacrificially corrodes instead of the tank, but it must be replaced before it's fully consumed. Colorado's water chemistry, particularly in the Denver metro where water is somewhat alkaline, consumes anode rods at a moderate rate. We inspect and replace rods during plumbing service visits and test the thermostat and T&P relief valve at the same time.

Winterization and Spring De-Winterization

Colorado RV winterization is not optional — it is an annual necessity if you park your rig between October and April in the Denver metro. We perform blow-out winterization using compressed air followed by RV antifreeze added to every P-trap. We fill the water heater bypass loop with antifreeze and confirm that every low point drain is clear. In spring, we de-winterize by flushing the antifreeze, inspecting every line and fitting, pressurizing the system, and running the pump through a complete test cycle before leaving your driveway. Denver RV owners who trust Mobile RV Repair Denver CO with their winterization each fall protect their investment against the most costly and preventable damage that Colorado winters can inflict.