Summers are dry statewide. NOAA calls the southern deserts some of the nation’s hottest and driest areas
Keeping house systems alive in heat and at altitude
Stay limits shape how a camper gets used. BLM California allows 14 days in any 28 before a 25-mile move, the Bishop Field Office allows 14 days a year, Anza-Borrego allows 30 days a calendar year across its whole backcountry, and Mojave National Preserve allows 14 consecutive days and 30 a year. Water capacity, solar and battery health decide how much of that you can actually use.
Heat is the test that breaks things. With Death Valley summer highs often above 120°F, ask a service center about ventilation, refrigerator performance and battery temperature limits, then ask about freezing nights at 9,000 feet in the Sierra.
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 California?
From Brawley at -113 feet to Mount Whitney at 14,494.
Altitude decides what your engine, your brakes and your lungs have to work with, and how late in the year the passes open.
-2,00002,0004,0006,0008,00010,00012,00014,000
Feet above sea level
Towns
Lee ViningOn US 395 at the eastern foot of Tioga Pass. When Tioga Road is closed there is no way to drive into Yosemite from this side of the Sierra.6,790 ft
AlturasOn US 395 in Modoc County. CA 299 leaves US 395 five miles north of town for Cedarville, where the Surprise Valley byway begins and ends.4,372 ft
SusanvilleOn US 395 in the northeast. BLM Eagle Lake Field Office and a Lassen National Forest office cover the ground east and south of here.4,194 ft
BishopThe largest town in the Owens Valley, on US 395. BLM Bishop Field Office and an Inyo National Forest office. Dispersed camping inside this field office is capped at 14 days a year.4,145 ft
Big PineOn US 395. The Forest Service calls it the nearest food, water or fuel to the Ancient Bristlecone Pine Forest. Big Pine Road east from here reaches Eureka Valley and Death Valley.3,988 ft
Lone PineOn US 395 below Mount Whitney. Movie Road into the Alabama Hills leaves Whitney Portal Road west of the stoplight, and the Eastern Sierra Visitor Center sits south of town.3,727 ft
KernvilleOn the Kern River. The Sequoia National Forest’s Kern River Ranger District office is here, near the west end of Sherman Pass Road.2,647 ft
RidgecrestBLM Ridgecrest Field Office, between the southern Sierra and the Mojave. The usual base for the Panamint and Searles country and the southwest corner of Death Valley.2,294 ft
BarstowWhere I-15 meets I-40. BLM Barstow Field Office and the headquarters of Mojave National Preserve. The natural place to service a vehicle before the desert.2,174 ft
BakerOn I-15 where Kelbaker Road heads south into Mojave National Preserve. The Park Service lists Baker as one of the nearest gas stations and says there is none inside the preserve.932 ft
Borrego SpringsRinged by Anza-Borrego Desert State Park, with the park visitor center at the west end of Palm Canyon Drive. Named an International Dark Sky Community.589 ft
NeedlesOn I-40 beside the Colorado River. BLM Needles Field Office, and the eastern approach to the Mojave Road by way of Piute Spring.495 ft
BakersfieldWhere CA 58 meets CA 99. BLM Bakersfield Field Office, which manages the Carrizo Plain National Monument to the west. Last full services before the plain.404 ft
BlytheOn I-10 at the Arizona line. The Bradshaw Trail is reached by driving west on I-10 to the Wiley’s Well exit and south past Wiley’s Well Campground.268 ft
Shelter CoveThe road end on the Lost Coast, about 22 miles from US 101 at Redway. King Peak Road and the other King Range back roads climb inland from the road that brought you here.144 ft
BrawleyBelow sea level in the Imperial Valley. CA 78 runs east from here to the Imperial Sand Dunes; the BLM’s El Centro Field Office is south.-113 ft
Passes, high roads and summits
Mount WhitneyThe highest point in California and in the lower 48. No road to the top14,494 ft
Telescope PeakThe highest point in Death Valley National Park, above Badwater Basin11,049 ft
Patriarch GroveBristlecone Pine Forest Scenic Byway: US 395 at Big Pine, by CA 168 and White Mountain Road, to Patriarch Grove in the White Mountains11,000 ft
Tioga PassTioga Road: Crane Flat in Yosemite to Tioga Pass and US 395 at Lee Vining9,945 ft
Sherman PassSherman Pass Road: The North Fork of the Kern River west of the pass to US 395 and the high desert in the east9,200 ft
North PassSaline Valley Road: CA 190 in the south and Big Pine Road in the north, through Saline Valley7,200 ft
Red PassTitus Canyon Road: Nevada Highway 374, the Daylight Pass Road, two miles east of the park boundary, west into Death Valley5,250 ft
King PeakThe highest point in the King Range, three miles from the Pacific4,088 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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