Mobile RV Repair in Westport and Grayland, WA

Westport is a working harbor town at the mouth of Grays Harbor, known for charter fishing, surfing and the state’s tallest lighthouse. Just south, Grayland and Twin Harbors fill up with RVs for beach camping and razor clam digs. United Mobile RV comes to your campsite or RV park in Westport, Grayland, North Cove and Tokeland.

We focus on power and connectivity (Victron, solar and lithium, Starlink, weBoost and Peplink) and on-site diagnostics for 12V, shore power and appliances.

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

Serving Westport and the South Beach

We cover Westport and the South Beach along SR-105: Twin Harbors, Grayland, North Cove and Tokeland, plus Aberdeen and Cosmopolis on the way out. Westport shares coast route days with Ocean Shores. The Long Beach Peninsula is farther south on US-101.

Campgrounds and RV parks around Westport

We’re not affiliated with these parks. They’re common South Beach stays, and we’ll meet you at your site:

• Twin Harbors State Park, just south of Westport. The hookup sites are small and max out around 35 feet.
• Grayland Beach State Park, with paved sites, full and partial hookups, and some sites up to 60 feet, with limited availability.
• American Sunset RV & Tent Resort in Westport, open year-round with full-hookup sites and 20/30/50-amp service, within walking distance of the marina.

What we work on in Westport

• Corrosion from salt and spray. Westport sits between the harbor and the ocean, and salt gets into every connection. Corroded grounds, battery terminals and shore power plugs cause most of the strange electrical faults we see here.
• 12V fuse and relay problems. Lights, pumps and slides that work one day and not the next often come down to a corroded fuse block or relay. We trace it at the distribution panel. See RV electrical.
• Small-site power. Compact hookup sites at Twin Harbors mean short cords, adapters and sometimes lower-amp service. We check your setup and add an EMS for protection. See our surge protector and EMS guide.
• Lithium and Victron for anglers and long-stay campers who need power for fridges, freezers and electronics. See Victron systems.
• Starlink, weBoost and Peplink for staying connected at the beach. See connectivity.
• Appliances. Furnaces, fridges, water heaters and water pumps, diagnosed at your site.

Seasonal notes

Fishing season and summer bring the crowds. Twin Harbors is one of the beaches where WDFW opens razor clam digs, which fills campgrounds on dig dates. Winter is stormy, with wind-driven rain that tests every seal and connection, so we confirm visits around the weather.

While you’re here

• Westport Light State Park, a day-use park with beach access, next to the Grays Harbor Lighthouse, which at 107 feet is Washington’s tallest.
• The Westport marina, home to the charter fishing fleet.
• Razor clam digs at Twin Harbors, on dates WDFW announces.

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. You’ll get a quote before any repair work starts. The details are on our pricing page.

Help before we get there

Not sure you need a visit? A remote support call can rule out settings problems and tell us which parts to bring if you do.

Frequently asked questions

Can you work at Twin Harbors and Grayland Beach state parks?

Yes, where the park allows it. Send us your site number and let the host know a technician is coming.

My lights and water pump cut out at random. What causes that?

At the coast it’s usually corrosion: a ground, a fuse block or a battery connection. We test under load to find the exact point instead of replacing parts at random.

Can you set up power for a freezer full of fish?

Yes. We size lithium and inverter capacity so a freezer can run through the night, and make sure it recharges from shore power, solar or your alternator.

Do you come out in winter?

Yes, weather permitting. We’ll confirm the day before if a storm is coming.

Nearby areas and services

• Washington Coast (all areas)
• Ocean Shores, WA
• Long Beach Peninsula, WA
• Olympia, WA
• Olympic Peninsula
• All of Washington
• All RV services
• Remote RV support
• Pricing

Get your RV looked at

Book online, or call or text (616) 606-5277 with your rig’s year, make and model, what’s going on, and your park and site number in Westport or Grayland. Photos help.