Serving Northern California for over 30 years! 

our services

Whether it’s staying cool during these hot California summers or staying cozy during the cold winter, we’ll keep your home just right.

Residential HVAC Services

Commercial air conditioning and heating services. We service all types air conditioners, heat pumps, furnaces, boilers and more.

Commercial HVAC Services

We offer commercial refrigeration and ice machine repair, installation, and maintenance at the Northern California’s best price.

Commercial Refrigeration



Here’s what just some of our clients have said!

“I’m delighted to add another 5-star review for Chris from CJ’s Mechanical. His customer service skills are great — he actually LISTENS to find out what the problem is. In this case, it was a problem created by an earlier repair person, and Chris resolved it. If I could give 6 stars, I would!”

“Love this guy! I got 3 quotes for adding AC, the last nearly double what he charged. All telling me something different to add on charges, all trying to get me to buy a big unit for my little house. Chris did a great job, and I totally trust what he says. So glad I found him!”

“Cliff at CJ Mechanical went above and beyond to fix the ice maker in my refrigerator. He came back twice and never charged me. He was truly diligent at diagnosing the problem and wouldn’t stop until he had it running perfectly. I highly recommend his services. He is honest and hard working. Thank you Cliff.”

“They do dependable work, and they’re a company that will get the job done. I would say just that I didn’t have to worry at all about having to call them back out here because something went wrong. They get everything done correctly the first time around as opposed to other companies I’ve used previously, thank goodness.”

The North Bay’s most trusted and highest quality HVAC services.

Would you like to speak to one of our technicians over the phone? Just submit your details and we’ll be in touch shortly. You can also Email Us if you would prefer.

For Businesses: If you have questions about how we can help your company? Send us an email and we’ll get in touch shortly, or phone (707) 843-7510 between 7:30AM and 5:00PM Monday to Friday — we would be delighted to speak.