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 in Kuna, ID 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 Boise, ID 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 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 Ultimate Heating & Air, and we can set up an appointment to calculate the furnace size you might need.

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.

"Great job"
- R W.

Gas Furnace Maintenance in Meridian, ID 83642

April 4, 2022

"Michael was courteous, professional and personable. He explained what he was going to do and answered any questions I had."

- Jennifer S.

Gas Furnace Maintenance in Meridian, ID 83642

February 10, 2022

"Frank was very helpful and thorough, as he always is."

- Lorraine S.

Gas Furnace Maintenance in Boise, ID 83704

April 20, 2021

"Outstanding customer service! Within an hour, our furnace repaired from start to finish! Thank You!"

- Pam C.

Gas Furnace Repair in Kuna, ID 83634

January 18, 2021

"I am very happy with the service I received. Darin Wilson was super helping me get the furnace I needed and staying in my budget. The crew putting in my new furnace, water heater and AC were friendly and did a super job. My trust with them leaving my sweet dog Daisy was heart warming. Thanks so very much."

- Tonya T.

Happy with the Service

March 19, 2020

"I had a really old furnace and an old and undersized air conditioner. Over the years I had several problems with the air conditioner. Ultimate would come out, give me an honest assessment (hey, you really need a new air conditioner!), but instead of the high pressure sales pitch they would always figure out a way to repair my old unit and keep it running. After they did this for three summers in a row, I knew that when I did eventually replace the furnace and air conditioner I would definitely call Ultimate because I trusted them. Sure enough, finally got both of those units replaced along with all of my old duct work this past summer (2014). Of course I called Ultimate and did not even seek other bids because I knew they were the best. Their work was excellent and their price was very reasonable. My electric and gas bill have been reduced dramatically and our comfort has been increased. They did a great job and I would highly recommend them and will call them for any HVAC work I need to have done in the future. They are my HVAC guys!"

- T. W.

They are my HVAC guys!

October 16, 2014