Heating & Air Conditioning in Knightsen, CA
Your local heating and air contractor in Knightsen
Blue Star Heating & Air is an Antioch-based HVAC contractor serving homes and businesses in Knightsen. We repair, replace and maintain air conditioners, furnaces and heat pumps, and we replace ductwork. Tell us what your system is doing and we'll set up a visit.

- 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
We serve every part of Knightsen, including Knightsen Farm Bureau hall, Knightsen Elementary School, Delta Rd and Sellers Ave - it's about 8 miles southeast via Main St and Sellers Ave from our Antioch shop. Knightsen is a small farming community of owner-occupied ranch houses between Oakley and Brentwood, and with hot summers and chilly winters, your heating matters as much as your AC.
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
Do you serve all of Knightsen?
Yes. We serve all of Knightsen, including Knightsen Farm Bureau hall, Knightsen Elementary School, Delta Rd and Sellers Ave. Call with your address and we'll confirm the first available appointment.
Do you work on both homes and businesses in Knightsen?
Yes. Along with residential AC and heating, we repair, replace and maintain commercial systems such as rooftop package units and split systems for offices, shops, restaurants and apartment buildings.
What should I have ready when I call?
Your address, the type of system (central AC, gas furnace, heat pump or package unit), roughly how old it is, and what it's doing - noises, smells, error codes or no air at all. That helps us bring the right parts.
