# Auxiliary Coolant Heater Service in Huntington Beach, CA

Canonical: https://campervanrepairshop.com/services/hvac-comfort/auxiliary-coolant-heater/
Business: Camper Van Repair Shop, Yorba Linda, CA. Serving Huntington Beach, California.
Phone: (714) 646-1433 | Email: info@ocrvcenter.com

Auxiliary coolant heater service in Huntington Beach restores your Sprinter's factory cab pre-heater, the booster that warms coolant for faster heat and defrost on cold mornings. When it quits, the cab takes forever to warm and the windshield stays fogged. Our Yorba Linda shop diagnoses the heater, fuel supply, and controls, then repairs it so the cab warms quickly. This is the factory cab heater, not the camper living-space heater.


## What this includes
- Diagnosis of the factory auxiliary coolant heater and its controls
- Fuel supply, glow pin, and combustion fault testing
- Heater unit cleaning, repair, or replacement
- Coolant circuit and pump check for the booster loop
- Timer, climate control, and activation testing
- Verification of faster warm-up and defrost after repair

## Who it is for
- The cab takes a long time to warm on cold mornings
- The factory pre-heater no longer runs or throws a fault
- Defrost is slow and the windshield stays fogged
- You want the booster heater working before winter travel

## Pricing
HVAC labor is $260 per hour, plus heater parts if the unit needs replacement. Ballpark range, quoted in writing after inspection.

## FAQ
### What does the auxiliary coolant heater do on a Sprinter?
It is a factory booster that heats engine coolant so the cab warms and defrosts faster than the diesel alone can manage. When it fails, warm-up and defrost slow down noticeably in cold weather.

### Is this the same as my camper's Espar or Webasto heater?
No. This is the factory cab coolant heater. A camper living-space Espar or Webasto heater that warms the living area is a separate camper-upfit service, which we also handle under our camper work.

### Why is my Sprinter slow to warm up and defrost?
Diesels make little spare heat at idle, and the auxiliary heater covers that gap. If it has failed, warm-up and defrost drag. We test the heater and its fuel and controls to get it working again.