AC Repair in Knightsen, CA
Air conditioner not cooling in Knightsen?
When your air conditioner stops cooling, blows warm air, freezes up or keeps tripping the breaker, Blue Star Heating & Air can find the cause and fix it. We repair central air conditioners and heat pumps in Knightsen, and we explain the problem and the price before any work starts.

- From our Antioch shop
- About 8 miles southeast
- ZIP code
- 94548
- Power
- PG&E delivery, MCE generation
- Permits
- Contra Costa County Dept. of Conservation & Development – Building Inspection
Serving Knightsen
From our Antioch shop on Wilbur Avenue, Knightsen is about 8 miles southeast via Main St and Sellers Ave, and we cover the whole area, including Knightsen Farm Bureau hall, Knightsen Elementary School, Delta Rd and Sellers Ave. Knightsen summers run hot, so we repair central air and set up ductless systems for ranch houses and outbuildings that need cooling of their own.
Main roads
- Delta Rd
- Knightsen Ave
- Sellers Ave
- East Cypress Rd
- Byron Hwy
Around Knightsen
- Knightsen Farm Bureau hall (1922)
- Knightsen Elementary School; the oldest 4-H chapter in California
Other services in Knightsen
All servicesFor businesses
Questions before you call
How soon can you come out for AC repair in Knightsen?
Call us and we'll give you the first available appointment. Knightsen is about 8 miles southeast via Main St and Sellers Ave from our Antioch shop. During heat waves the schedule fills fast, so calling early in the day helps.
How much does AC repair cost in Knightsen?
It depends on what failed. A capacitor, contactor or clogged drain line is a small repair; a refrigerant leak, failed blower motor or compressor is a larger one. We diagnose first and give you the price before we start.
Should I repair or replace my air conditioner?
If your system is around 15 years or older, still uses R-22 refrigerant, or needs a major part like a compressor, replacing it is often the better investment. We'll show you both options so you can decide.
