Furnaces

Woman cooling down with a bottle of water.

Foss Heating & Cooling is the leading HVAC company in Mount Vernon, WA, 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 Mount Vernon, WA 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 Foss Heating & Cooling, and we can set up an appointment to calculate the furnace size you might need.

Need Furnace Service?

Contact the experts at Foss Heating & Cooling.

Call us at 360-336-1517!

Gas Furnace Repair in Mount Vernon, WA 98274

“Great prompt service we highly recommend.”

– Kelly K.

Gas Furnace Maintenance in Anacortes, WA 98221

“On time, quick, and friendly. Up front about pricing and what needed to be done. Didn’t try to sell me on anything extra that I didn’t need.”

– Dawn R.

Gas Furnace Maintenance in Anacortes, WA 98221

“Very friendly folks. Explained the system to me and shared different options to consider. Will certainly call Foss again. Thank you, Brett and Mason.”

– Nadine C.

Gas Furnace Maintenance in Mount Vernon, WA 98273

“Once again, your technicians are professional and knowledgeable. I always appreciate when they inspect that they may make recommendations for an upgrade but never pressure for a sale. I feel they are honest. Always a good experience!”

– Julie M.

Gas Furnace Maintenance in Mount Vernon, WA 98274

“Friendly, efficient, and knowledgeable. Thanks!”

– Rachel B.

Gas Furnace Maintenance in Mount Vernon, WA 98274

“Great!”

– D.A. I.

Gas Furnace Maintenance in Anacortes, WA 98221

“Darien was knowledgeable and personable. I feel confident that my furnace is ready for winter. Great service!”

– Beverly H.

Gas Furnace Maintenance in Mount Vernon, WA 98274

“Courteous, knowledgeable, and thorough service!”

– Randall W.

Gas Furnace Maintenance in Anacortes, WA 98221

“Great service. Huge knowledge of system. Very helpful and courteous.”

– Howard R.

Gas Furnace Maintenance in Anacortes, WA 98221

“Great work as always”

– Pat M.


Foss Heating & Cooling proudly provides HVAC service to Mount Vernon, Anacortes, Burlington, Bow, Camano Island, La Conner, Sedro Woolley, Stanwood, and the surrounding communities. Visit our service area page for more coverage details, call us at 360-336-1517, or request service online today.