Whole House Fan Installation in Antioch, CA and the East Bay
Let the Delta breeze cool your house at night
A whole house fan pulls cool outside air in through open windows and pushes hot air out through the attic. In East and Central Contra Costa, where a hot afternoon is usually followed by a cool Delta breeze after sunset, a fan can flush the day's heat out of the house far faster than an air conditioner and on a small fraction of the electricity. Run it in the evening and early morning, and your AC starts the next afternoon with a cooler house and less work to do.
Why choose Blue Star
A whole house fan is only as good as the attic venting behind it. With too little vent area, the fan pushes hot attic air back into the house or strains the motor; with too much fan for the house, you get noise and drafts. As an HVAC contractor licensed since 2006 (CSLB #880647), we size the fan to your square footage, measure the attic's exhaust area, plan the electrical, and choose a quiet model with an insulated damper so the ceiling opening doesn't leak heat in winter.
- Fan sized to square footage
- Attic vent area measured
- Insulated damper for winter
- Wall control or timer
- Electrical planned up front
- Attic insulation protected
Where we work
The Delta breeze is why whole house fans work so well here. Marine air funnels through the Carquinez Strait and across the Delta, so Antioch, Pittsburg, Oakley and Brentwood usually cool off after dark even though July highs average in the 90s. Concord, Clayton and Walnut Creek see similar evening drops, and Lafayette and Moraga cool down at night as well. Moving evening cooling from the AC to a fan also trims usage during PG&E's time-of-use peak pricing.
Major corridors
- SR-4
- SR-160
- Lone Tree Way
- Balfour Rd
- Clayton Rd
- Ygnacio Valley Rd
- SR-24
- Moraga Rd
Find your area
East Contra Costa
Antioch, Pittsburg, Bay Point, Oakley, Brentwood, Discovery Bay, Byron, Knightsen, Bethel Island, Rio Vista
Central Contra Costa
Concord, Clayton, Pleasant Hill, Walnut Creek, Martinez, Saranap, Pacheco
Lamorinda
Lafayette, Moraga
4.9 stars on Google
Read more reviewsColton was great. He found the problem right away and did a temporary fix to get my a/c running until he could get the right part ordered. He also made sure every inside was working well.
Questions we hear
Are whole house fans worth it in East Contra Costa?
For most homes here, yes, because the evenings cool down. A whole house fan can replace hours of evening and early-morning AC run time on a fraction of the electricity, and many owners end up needing the air conditioner only in the hottest part of the day. It's less useful on nights that stay warm, during heat waves that don't break, or in homes without attic space to vent into.
What's the difference between a whole house fan and an attic fan?
An attic fan only exhausts hot air from the attic and doesn't move air through your rooms. A whole house fan mounts in a ceiling, pulls air in through open windows, and pushes it up into the attic and out the vents, so it cools the house and the attic together. The two are often confused, and an attic fan alone won't cool your living space the way a whole house fan does.
Will I need more attic vents?
Often, yes. A whole house fan needs enough open vent area in the attic to let all that air escape, and manufacturers spell out how much each fan size requires. Many tract-home attics are vented for normal code minimums, which isn't enough for a large fan. We measure the existing vents and tell you whether more gable, roof or eave vents are needed before you commit to a fan.
Can I run it on smoke or high pollen days?
No. A whole house fan pulls outside air straight into the house, so on smoke advisory days, during nearby grass fires, or at peak pollen, leave it off and let the air conditioner run with a good filter. That's one reason we suggest pairing a fan with a MERV 13 filter on the central system. Check the Bay Area Air District's air quality forecast before switching it on.
Are whole house fans noisy?
Older belt-drive fans with a louvered ceiling shutter were loud and leaked heat in winter. Newer ducted models sit up in the attic, keep the motor noise away from the ceiling grille, and have insulated dampers that close when the fan is off. You'll still hear moving air, but most owners run them at night with the bedroom windows open. We help you choose the size and speed control that fit your home.
Related services
All servicesBlue Star Heating & Air is just a call away!
Want to run the AC less next summer? Call (925) 584-2428 and we'll check your attic, size a fan for your home and give you a written quote.