Furnaces

Blue flames under a furnace.

Enviro Heating & Air Conditioning is the leading HVAC company in Santa Rosa, CA, for your furnace service needs. We service and repair all makes and models. If you need furnace service, we are the company to call. Our skilled technicians are qualified to solve just about any repair or installation that you throw at us.

Furnace Repair

Don’t get left in the cold! Is your furnace acting up, blowing cold air, or making too much noise? Our experienced team of professionals is here to keep your home warm and cozy. We repair all makes and models, and we will never try to sell you a service that you don’t need. Our technicians are honest and hard working, and we’re always transparent and fair about the work we do.

Furnace Replacement

Sometimes a repair is not sufficient to fix your furnace. Sometimes a new furnace is the most cost-effective and energy-efficient way to go. We will always be honest with you about a possible furnace replacement. We value our time and your money—we don’t want to perform repairs or service on an appliance that is in need of replacement.

If you do need a furnace replacement, we know how overwhelming it can be. Here are some of the frequently asked questions about furnaces that we get from some of our Santa Rosa, CA residents:

What Are The Different Types Of Furnaces?

Single Stage: A single-stage furnace has only one stage of operation. It can either be turned on or turned off.

Two Stage: A two-stage furnace has two settings—full and half speed. This is a more efficient way to heat and provides for better comfort, because it can move the air at a slower pace.

Variable Stage or Modulating: A variable-stage or modulating furnace modulates the speed and heat output based on the temperature outside and the desired comfort level. This furnace only works as much as you need it, making this type the most energy-efficient type of furnace.

What Is AFUE?

AFUE, or Annualized Fuel Utilization Efficiency, is a measure of furnace-heating efficiency. The higher the AFUE, the more efficient the furnace.

What Size Furnace Do I Need?

We can calculate the correct size furnace for your home. The number of BTUs, or British Thermal Units, needed to heat your home is dependent on a number of variables. Contrary to what you might think, a bigger furnace may not necessarily mean more heating power for your home. Call us at Enviro Heating & Air Conditioning, and we can set up an appointment to calculate the furnace size you might need.

Need Furnace Service?

Contact the experts at Enviro Heating & Air Conditioning.

Call us at 707-795-7219!

Gas Furnace Replacement in Sonoma, CA 95476-6723

“Garryt fixed our a/c during the worst of our August/September 2022 heat wave. To do so, he had to replace our furnace blower motor. The furnace is located in our attic crawl space, which gets incredibly hot. This wasn’t a quick fix. Garryt cheerfully made four service calls to resolve the problem. He never complained once about the heat. Garryt is a hero.” – Ray B.

Gas Furnace Maintenance in Petaluma, CA 94952

“Exceptional technician! Andrew is courteous, friendly and extremely helpful. He loves his job and speaks very highly of his counterparts. You have a winner in this employee!”

– Bill W.

Gas Furnace Repair in Mill Valley, CA 94941

“Alex spent two hours here and fixed our ignition system for the furnace. We had about given up on it, and faded a very expensive replacement of our 108 year old octopus heater. It now functions perfectly and with his cleaning is a improved heater. I could not be more pleased. Thank you”

– Ivan S.

Furnace Maintenance Maintenance in Rohnert Park, CA 94928

“Garryt is very professional, knows his job well and is very informative.
He's kind and easy to talk to.

Thank you Garryt!!”

– Margret P.

Furnace Maintenance in Sonoma, CA 95442

“Hello,
It was great to work with Garryt. He was very informative and thorough.

Shirley Zisman”

– Shirley Z.

Gas Furnace Replacement in Petaluma, CA 94952

“Can't remember the installers names but no matter. Everyone we dealt with at your firm was outstanding.
Prompt efficient and professional service should be your motto because your staff represents these qualities.
No doubt that we will recommend you to our family and friends. The owner of this business should be proud of their "A" TEAM!!!!!!!”

– Bill W.

Gas Furnace Repair in Petaluma, CA 94952

“Alex is a definite asset for Enviro. His expertise and willingness to share his thoughts is a great help to me.”

– Buzz R.

Gas Furnace Installation in Rohnert Park, CA 94928

“After overcoming some communication problems, I found that this is a great company to work with. Very flexible in meeting my needs and price point. Arrived on time, and when here, really focused on getting the job done. I also like that they're a smaller, family owned company. And being local was a big plus. I recommend that you give this company a try for your needs.”

– Ralph S.

Gas Furnace Replacement in Rohnert Park, CA 94928

“Enviro replaced our gas furnace and added AC. Drew was very pleasant to work with. Always arrived at the time agreed on. Finished the job on time. Explained all the new equipment in detail. Showed us how to operate the thermostat. Did a great job cleaning up. A very good experience. I would use Enviro again.”

– Roxanne M.

Gas Furnace Installation in San Rafael, CA 94903

“Don’t remember the names of the individuals but they were very good.”

– Bob G.


Enviro Heating & Air Conditioning proudly provides HVAC service to Santa Rosa, Petaluma, Rohnert Park, and the surrounding California communities. Visit our service area page for more coverage details, call us at 707-795-7219, or request service online today.