Mobile RV Repair in Seattle, WA

Mobile RV service around Puget Sound

Around Puget Sound, a lot of RVs spend more of the year parked than rolling: in a side yard in Snohomish County, a covered storage lot off I-5 in Pierce County, or a long-term site at an RV park in the Kent valley. Shop bays in the region book out for weeks, especially in spring and right before the first freeze, and towing a rig through I-5 traffic to sit in a lot is nobody’s idea of a good day. We bring the diagnostic tools and parts to the rig instead.

If you searched for mobile RV repair near me, RV generator service, RV generator repair, RV winterizing or mobile RV refrigerator repair in Seattle, this is the page. We do the everyday repairs that keep a rig usable (leaks, fridges, generators, furnaces, water heaters, dead batteries) and the bigger power and connectivity projects: lithium, solar and Victron systems, Starlink, Peplink and weBoost.

Each part of the Sound has its own page with local parks, highways and the repairs we see most there. Pick yours below, or keep reading for how we work across the whole region.

United Mobile RV LLC is dealership-trained, 11+ years: a Victron Energy Certified Installer, a weBoost Certified Installer/Reseller, a Dometic Professional and a Peplink Certified Associate.

Where we work around Puget Sound

• North Sound: Everett, Lynnwood and Edmonds, Mill Creek, Bothell, Marysville and Snohomish
• Seattle and the Eastside: Seattle, Bellevue, Kirkland, Redmond, Issaquah and Sammamish
• South King County: Renton, Kent, Auburn and Puyallup, Federal Way, Maple Valley and Covington
• Pierce County: Tacoma, Lakewood, Gig Harbor and the JBLM area
• Thurston County: Olympia, Lacey, Tumwater and Yelm
• Ferry and island trips: Vashon, Bainbridge and Whidbey are case by case because the ferry adds time, so text us first

Kitsap and Hood Canal, Bellingham and the North Sound, the Olympic Peninsula and the coast run as their own route days: see Kitsap, Bellingham, the Olympic Peninsula and the Washington coast. Heading east over Stevens Pass? See the US-2 corridor and Wenatchee pages.

RV parks and campgrounds we visit around the Sound

We’re not affiliated with any of these parks. They’re places local RVers stay, and we’ll meet you at your site where the park allows outside technicians:

• Seattle/Tacoma KOA: in Kent, in the valley between Seattle and Tacoma, with big-rig sites.
• Lake Pleasant RV Park: in Bothell, full-hookup sites on the Bothell-Everett Highway.
• Trailer Inns RV Park: in Bellevue off I-90, handy for Eastside owners.
• Majestic RV Park: in Puyallup, just outside Tacoma.
• Washington Land Yacht Harbor: in Lacey, an Airstream-only park with full hookups.
• Millersylvania State Park: south of Olympia, where the RV sites have water and 30-amp electric but no sewer.
• Dash Point State Park: in Federal Way, where sites max out around 32 feet, which suits vans and smaller trailers.

Storage lots across the region are fine too, as long as the facility allows mobile work. State parks like Millersylvania and Dash Point have no sewer at the site, so your tanks, water pump and dump valves need to work before you go.

RV life around Puget Sound: rain, gray winters and mountain trips

West of the Cascades the wet season runs roughly October through May. Steady rain finds every dried-out bead of sealant, moss grows on roofs that sit under trees, and rigs that stay closed up build condensation on windows and inside cabinets. Most of the water damage we find started small at a vent, the AC gasket, a clearance light or a slide seal.

Winters are usually mild in the city but not frost-free. A few hard freezes most years, and colder nights in the foothills, Snohomish Valley and the plateau east of Renton, are enough to split a water line or a pump head in a rig that wasn’t winterized. Owners who live aboard through winter need heat tape, skirting and a furnace that actually lights.

Low sun, cloud cover and tall evergreens cut solar output hard from about October to March, so a system sized for summer in eastern Washington often falls short here. The same tree canopy is the most common Starlink problem on the west side.

Summer means mountain trips: I-90 over Snoqualmie Pass, US-2 to Stevens Pass, SR-410 and SR-706 toward Mount Rainier, and US-101 out to the Olympic Peninsula. Long grades load the brakes, tires and generator, and many of the best campgrounds have no hookups at all, so batteries and the fridge have to carry the trip.

RV repairs we do most around Puget Sound

The calls we get most across the region, with a short explanation of each:

• Water leaks, soft floors and delamination. West of the Cascades, water is the number one enemy of an RV. Failed sealant around roof vents, the AC, clearance lights and window frames lets water into the walls, and by the time you see a stain or a soft spot it has been leaking a while. We trace leaks, reseal, and use thermal imaging and moisture readings to map how far the damage goes. Roof and seal checks before the fall rains are the cheapest repair most west-side owners will ever buy. See roof and seals.
• Refrigerators. Absorption fridges that cool on propane but not electric (or the reverse), fridges that won’t light, cooling-unit failures, and residential fridges that shut off because the inverter or batteries can’t keep up. As a Dometic Professional we work on Dometic units every week, and we troubleshoot Norcold and residential fridges too. If you searched for mobile RV refrigerator repair in Seattle, we come to the rig, test the gas and electric sides, and tell you whether it’s a part or the cooling unit. See our Dometic fridge guide and electrical and appliance repair.
• Generator service and repair. We service and repair Onan, Generac and Kohler RV generators: oil, filters and plugs, plus surging, no-start and shut-down-under-load problems. Gas units that sit for months often surge because old fuel varnishes the carburetor; running the generator under load about once a month helps. RV generator maintenance (oil, filters, plugs and a load test) once a season keeps most Onan units out of trouble; we also clear Onan and Dometic fault codes and track down the cause. See generator service.
• Winterizing and freeze damage. We winterize with a compressed-air blow-out, RV antifreeze where you want it, and a water heater bypass, and we fix the split fittings, cracked pump heads and leaking valves that a missed freeze leaves behind. Flat-rate winterization is $175 for a travel trailer and $225 for a fifth wheel or motorhome, done in your driveway or storage lot. See plumbing and our winterization guide.
• 12V and shore power faults. Tripping park pedestals, burnt 30-amp plugs, failed transfer switches and long house cords to a side-yard rig are regular calls here. We trace dead outlets, tripping GFCIs, burnt shore power plugs, converters that stopped charging and parasitic draws that flatten batteries in storage. See RV electrical.
• Victron, lithium and solar. As a Victron Energy Certified Installer we install and service MultiPlus inverter/chargers, SmartShunt monitors, Cerbo GX and VRM monitoring, DC-DC charging and solar. We size panels, controllers and batteries for gray west-side winters, and add DC-DC charging so driving tops you up. See Victron systems.
• Starlink, Peplink and weBoost. Mounting and powering Starlink, Peplink routers that fail over between Starlink and cellular, and weBoost boosters for weak signal. Under evergreen canopy we set up mounts you can reposition and a Peplink router that fails over to cellular when the dish is blocked. See connectivity.
• LP gas, furnace and water heater. Furnaces that click but won’t light, water heaters that fault out, regulators that freeze up or leak, and LP detectors past their date. We leak-test and pressure-check before we call anything fixed. Furnaces that won’t light on the first cold night, and water heaters that fault out after storage, are the classic fall calls. See LP gas.

How a mobile visit works

1. Call, text or book online with the year, make and model, what the rig is doing, and where it’s parked around Puget Sound. Photos or a short video help.
2. We ask a few questions first. Some problems are a setting or a tripped breaker, and we’ll tell you if a remote session can sort it out without a trip.
3. If we need to come out, we set a day and a time window. Let the park office or storage facility know an outside technician is coming.
4. On site we test before we replace: meter readings, load tests, and thermal imaging where it helps. You get a plain explanation and a quote before any repair starts.
5. Most repairs are finished on the same visit. If a part has to be ordered, we tell you what and how long, then come back to finish.

Pricing

On-site diagnostic visit: $175. Labor: $150/hr. The $175 diagnostic is a standalone fee for on-site troubleshooting. Every visit has a minimum: one hour of labor ($150) or the $175 diagnostic, depending on the job. $75 trip fee within 50 miles. Over 50 miles, $2.00/mile both ways. Parts and supplies vary per job. Details are on our pricing page. Flat-rate winterization is $175 for a travel trailer and $225 for a fifth wheel or motorhome.

What to have ready

• Year, make, model and length, plus the brand of the generator, inverter or fridge if you know it.
• Clear access to the problem: battery bay, generator compartment, water heater door or roof ladder.
• Shore power if you have it, and enough propane to test LP appliances.
• Your site or space number, any gate code, and park rules about outside technicians.
• Error codes, blinking lights or app screenshots (Victron VRM, Onan, Dometic or thermostat codes).

Guides and service pages for this area

• Roof leak troubleshooting guide
• Dometic AC, fridge and awning troubleshooting guide
• Norcold refrigerator troubleshooting guide
• Onan and Dometic fault code index
• RV generator troubleshooting guide: surging, no-start and load problems
• RV winterization guide: blow-out vs. antifreeze, step by step
• RV storage prep guide
• Starlink for RVs guide
• Lithium battery buying guide: including cold-weather charging

Nearby areas and services

• Everett, WA
• Lynnwood and Edmonds, WA
• Kent and Puyallup, WA
• Bellevue, WA
• Renton, WA
• Tacoma, WA
• Olympia, WA
• Kitsap and Hood Canal
• Bellingham and the North Sound
• Olympic Peninsula
• Washington coast
• US-2 corridor, Everett to Spokane
• Wenatchee, Leavenworth and Lake Chelan
• Spokane
• Tri-Cities
• All of Washington
• Custom van builds
• General RV repair
• All RV services
• Generator service
• Plumbing and winterizing
• RV electrical
• Roof and seals
• LP gas
• Victron systems
• Remote RV support
• All RV guides