Close up of blue flames in a furnace.

1 year warranty.When you are paying to have your heating or cooling system repaired, you want it to last. Other companies use the most inexpensive parts and provide the shortest warranty term possible (typically 60 days). Let's face it, you wouldn't warrant something you didn't expect to last.

That's why we use top quality parts, giving us the confidence to back all our repairs with a 1 Year repair warranty.

Arizona Comfort Systems is the leading HVAC company in Sierra Vista, AZ, 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 Sierra Vista, AZ, 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 Arizona Comfort Systems, and we can set up an appointment to calculate the furnace size you might need.

Need Furnace Service?

Contact the experts at Arizona Comfort Systems.

Call us at 520-415-5681!

Gas Furnace Maintenance in Sierra Vista, ST 85650

“Excellent service and the technician was outstanding.” – Jeff L.

Gas Furnace Maintenance in Hereford, ST 85615

“Robert M was on time, professional and curteous. We are well pleased with his visit.”

– Ned L.

Gas Furnace Maintenance in Sierra Vista, ST 85650

“Michael a five star employee for sure.”

– Marilynn S.

Gas Furnace Repair in Sierra Vista, ST 85650

“Competent and thorough service by a friendly agent.”

– Erin I.

Gas Furnace Repair in Hereford, ST 85615

“The repairman diagnosed the problem within minutes and let us know what repairs were needed. When he came back for the repairs he did a very professional job. Send Auhsten back any time we need service and repairs!”

– Robert P.

Gas Furnace Repair in Huachuca City, ST 85616


– Louis G.

Gas Furnace Repair in Sierra Vista, ST 85635

“Auhsten was very thorough and answered all our questions. Very nice experience and we will be using AZ Comfort Systems in the future”

– Victor R.

Gas Furnace Repair in Sierra Vista, ST 85635

“I wasn’t at the house when he performed maintenance repairs on our heater/ac thermostat. Just from explanation and coming home to a nice cozy warm house, I’m very satisfied that the job was done right and in a professional manner. Thank you to you guys and to Remax Homestores for providing us with the best professionals in town.”

– Angelina B.

Gas Furnace Maintenance in Sierra Vista, ST 85635

“Jacob did maintenance on our furnace, cleaned our dryer vent AND vacuumed the whole home ductwork. He removed all grills and washed them as well as dried them before installing them. Although this was a lengthy job, Jacob maintained his good sense of humor. He was courteous, pleasant and picked up after himself.”

– Carmen R.

Gas Furnace Repair in Huachuca City, ST 85616

“Robert was very nice, and very knowledgable in his trade.”

– Paul K.

Arizona Comfort Systems proudly provides HVAC service to Benson, Bisbee, Hereford, Huachuca City, Sierra Vista, Tombstone, and the surrounding communities. Visit our service area page for more coverage details, call us at 520-415-5681, or request service online today.