Mobile RV Repair in Sequim, WA

Mobile RV service in Sequim and the Dungeness Valley

Sequim sits in the rain shadow of the Olympic Mountains and gets about 16 inches of rain a year, far less than the rest of the peninsula. That drier, sunnier weather is a big reason so many RVers spend months here, and why Sequim is one of the better places in western Washington to run solar. The town fills with seasonal and long-stay rigs, retirees with a motorhome in the driveway, and summer visitors using it as a base for the park and the Strait.

We come to your RV park, campsite or driveway in Sequim and the Dungeness Valley. Our core work is Victron, solar and lithium, Starlink and Peplink, plus diagnostics for 12V faults, shore power and appliances. Long stays are a good time for upgrades, and coaches that sit for months have their own problems: dead batteries, failing converters and corroded connections.

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.

Serving Sequim and the Dungeness Valley

• Sequim: in-town RV parks, driveways and storage along Washington Street and US-101
• Carlsborg and Agnew: west of town toward Port Angeles
• Dungeness: north toward the Strait, the recreation area and Dungeness Spit
• Blyn and Sequim Bay: east along US-101 around the bay
• Diamond Point: northeast toward the mouth of Discovery Bay
• Port Angeles and Port Townsend: on the same peninsula route days; see Port Angeles and Port Townsend

Call or text if you’re just outside the Dungeness Valley. We reach the Hood Canal side on Olympic Peninsula trips.

Campgrounds and RV parks around Sequim

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

• Sequim Bay State Park: on the bay east of town, which takes RVs up to about 40 feet.
• Dungeness Recreation Area: a Clallam County park on the bluff above the Strait next to Dungeness Spit. There are no hookups, so it’s a real test of your batteries and solar.
• Rainbow’s End RV Park: a year-round park with full hookups and pull-through and back-in sites for rigs up to 40 feet.
• Olympic Peninsula/Port Angeles KOA Journey: west of Sequim on US-101, with full-hookup and pull-through sites.

If you’re here for the season, let the office know an outside technician is coming and send us your site number.

RV life around Sequim: sun, wind and long stays

With more sun than most of western Washington, Sequim is a good place to add or upgrade solar. Summer output is strong, and even in winter a well-sized array does more here than it would in Forks or Seattle. Winter output still drops, so we size battery capacity and backup charging for the darker months, not just July.

It’s still marine weather. Wind off the Strait and damp winters corrode battery terminals, grounds and shore power plugs, and rigs parked near the water see it first. Flickering lights, tripping GFCIs and a converter that stopped charging are often a corroded connection rather than a failed part.

Long stays have their own wear. Coaches that sit for months get dead batteries, converters that cook old lead-acid banks, and slide and leveling systems that stick from lack of use. Monitoring with a Victron shunt or Cerbo GX catches problems before they turn into a dead rig the morning you want to leave.

Summer is busy, especially around the lavender festival in July. Winter is quieter and a good time for upgrades before spring trips. The Olympic Discovery Trail runs through town, and Dungeness Spit and the wildlife refuge are next to the county recreation area.

What we work on in Sequim

The work we do most for Sequim RVers:

• Solar that actually pays off. We size panels and charge controllers for dry camping at places like Dungeness and for long stays at a park, and we fix underperforming arrays: wrong controller settings, undersized wiring and shaded panels. Our solar sizing guide shows how.
• 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. A LiFePO4 bank with VRM monitoring is a good fit for seasonal stays and boondocking. See Victron systems.
• Snowbird and long-stay rigs. Coaches that sit for months get dead batteries, failing converters and corroded connections. We check the system, replace what’s failing and set up monitoring so you can see the batteries from your phone.
• Starlink, Peplink and weBoost. Mounting and powering Starlink, Peplink routers that fail over between Starlink and cellular, and weBoost boosters for weak signal. For full-timers we set up Starlink, weBoost and Peplink so they switch between connections automatically. See connectivity.
• 12V and shore power faults. Marine air off the Strait corrodes plugs, terminals and grounds, so we clean, test and replace connections. 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.
• 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. Fridges, furnaces and water heaters get diagnosed at your site. See our Dometic fridge guide and electrical and appliance repair.
• 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 run much of the year here, so a furnace that won’t light or short-cycles is a priority call. 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 in Sequim. 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

• Solar sizing guide
• Lithium battery buying guide: including cold-weather charging
• Victron fault code guide
• Starlink for RVs guide
• Converter and inverter/charger guide
• RV storage prep guide
• Seasonal maintenance checklist

Nearby areas and services

• Olympic Peninsula (all areas)
• Forks, WA
• La Push, WA
• Port Angeles, WA
• Port Townsend, WA
• Washington coast
• Seattle and Puget Sound
• All of Washington
• Generator service
• Plumbing and winterizing
• RV electrical
• Roof and seals
• LP gas
• Victron systems
• Remote RV support
• All RV guides