With more than 160 recreation sites and 80 free campgrounds
Of ocean beach that is legally a public highway 10
62 miles
Street-legal vehicles only, 25 miles per hour
Keeping a camper working in the wet
The service calls in Washington are damp-weather calls: seals, condensation, heaters and batteries through a long grey winter, then salt from the coast. Ask a service centre how they handle water intrusion and how they would set up a van that is lived in through a Pacific Northwest winter rather than stored for it.
Size matters for where you can take it afterwards. Nothing over 22 feet is allowed on Cascade River Road inside the park, and trailers are shut out of Harts Pass and Forest Road 99.
A camper van, truck camper or expedition vehicle has two sets of systems, and most mechanics only want one of them. RV and van service centers work on the living side: the 12-volt system, heat, water, ventilation and everything that leaks or rattles loose after a season of dirt roads.
Typical work
01House battery, charging, solar and inverter diagnosis
02Diesel and propane heaters, and water heaters
03Plumbing, pumps, tanks and winterizing
04Roof fans, air conditioning, windows and seals
05Appliance service and leak repair
How to choose a service center
These systems are brand-specific, and so is the training.
01Ask which brands of heater, battery and inverter they are trained on.
02Ask if they will work on owner-built or small-builder vans. Some will not touch wiring they did not install.
03Ask about turnaround in season. Service backs up in spring and summer.
04Bring documentation: a wiring diagram, a component list and photos from the build.
What to have ready before you ask for a quote
Model numbers save a phone call.
01The vehicle or camper, and who built it
02The components: battery type and size, inverter, heater model
03What it is doing, and when
04Photos of the installation
05Where and when you can drop it off
Questions people ask
My heater stopped working at altitude. Is it broken?
Maybe not. Fuel-burning heaters can struggle at high elevation and may need an altitude setting or kit, and they soot up if they only ever run on low. A service center that knows the brand can check it and set it up for where you camp.
Can a shop add solar or lithium to an existing system?
Usually, but lithium batteries need compatible charging from the alternator, solar and shore power. A shop should look at the whole system rather than swap the battery and hope.
How do I winterize a van?
Drain or protect anything that holds water: tanks, pump, lines, water heater and filters. How you do that depends on how the system was built, so ask the builder or a service center to show you once.
How high is Washington?
From Long Beach at 20 feet to Mount Rainier at 14,411.
Altitude decides what your engine, your brakes and your lungs have to work with, and how late in the year the passes open.
02,0004,0006,0008,00010,00012,00014,000
Feet above sea level
Towns
RepublicWest side of Sherman Pass on SR 20, in the middle of the Colville National Forest and the Kettle River Range.2,564 ft
SpokaneOn I-90 near the Idaho line. Base for the Colville forest, the Kettle Crest and the eastern scablands.1,870 ft
WinthropMethow Valley town on SR 20, east side of the winter closure. The Harts Pass road leaves from up-valley.1,761 ft
ColvilleOn US 395 in the northeast. Services for the Three Rivers and Newport ends of the Colville forest.1,612 ft
EllensburgI-90 at the north end of the Yakima River Canyon byway, below the Naneum Ridge state forest roads.1,536 ft
LeavenworthOn US 2 below Stevens Pass, at the mouth of Icicle Creek.1,171 ft
ChelanAt the foot of Lake Chelan, the road gateway to the Lake Chelan National Recreation Area.1,130 ft
YakimaSouth end of the Yakima River Canyon. Gateway to the Naches and Ahtanum country and the Green Dot roads.1,067 ft
PackwoodOn US 12 between White Pass and Mount Rainier, at the north edge of the Gifford Pinchot.1,054 ft
OmakOn US 97 in the Okanogan valley, east of Loup Loup Summit and south of the Canadian border crossings.845 ft
WenatcheeHeadquarters town of the Okanogan-Wenatchee National Forest, on the Columbia where US 2 meets US 97.668 ft
MarblemountLast services on SR 20 before the North Cascades. Cascade River Road starts here.322 ft
ForksUS 101 town for the Hoh and the Olympic wilderness coast. Fuel before the long empty stretch south.305 ft
SeattleWhere I-5 meets I-90. The usual arrival point and the last big-city parts supply before the Cascades.173 ft
Port AngelesOn US 101 at the bottom of Hurricane Ridge Road, the main entrance to the Olympic high country.67 ft
Long BeachOn the 27-mile Long Beach stretch of the Seashore Conservation Area, where driving on the sand is legal.20 ft
Passes, high roads and summits
Mount RainierThe highest point in Washington. No road to the top; Sunrise, at 6,400 feet, is as high as a vehicle gets14,411 ft
Mount AdamsYakima County, the volcano the Washington Backcountry Discovery Route passes on its way north12,276 ft
Mount BakerWhatcom County, above the far end of the Mt. Baker Highway10,767 ft
Mount OlympusJefferson County, the high point of the Olympic Mountains7,928 ft
SunriseSunrise Road, Mount Rainier: SR 410 at the White River entrance to the Sunrise visitor area6,400 ft
Harts PassHarts Pass Road, Forest Road 5400: Mazama in the Methow Valley to the Pacific Crest Trail crossing6,200 ft
Sherman PassSherman Pass, SR 20: Republic to Kettle Falls across the Kettle River Range5,575 ft
Washington PassNorth Cascades Highway, SR 20: Marblemount and the Skagit valley to Winthrop and the Methow5,475 ft
Chinook PassChinook Pass, SR 410: Enumclaw and Mount Rainier to Naches and Yakima5,430 ft
Hurricane RidgeHurricane Ridge Road: Port Angeles to the Hurricane Ridge visitor area5,242 ft
Artist PointMt. Baker Highway to Artist Point, SR 542: Bellingham and Glacier to the end of the road below Mount Shuksan5,140 ft
Blewett PassChelan County, between Ellensburg and the Wenatchee valley4,138 ft
Stevens PassKing County, the US 2 crossing of the Cascade crest4,117 ft
Loup Loup SummitOkanogan County, between Omak and the Methow Valley4,017 ft
Cascade Pass TrailheadCascade River Road: Marblemount on SR 20 to the Cascade Pass trailhead3,660 ft
Snoqualmie PassKittitas County. The lowest Cascade crossing measured here, and the one I-90 uses3,014 ft
Pass, road and summit elevations are the figures published by the agency that manages them. Town elevations are the town’s or county’s own
figure where it publishes an exact one; the rest are from the U.S. Geological Survey (3D Elevation Program at the place’s official coordinates),
retrieved September 18, 2026. Every source is listed at the foot of the page.
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