Furnace FAQs

Q: What is AFUE?

The acronym stands for “Annual Fuel Utilization Efficiency.” It can partially be considered a counterpart to the SEER rating used for AC systems, and basically it’s a measurement of how well your furnace converts fuel (gas or oil) into heating energy. The higher the rating, the less the system wastes energy, so in general you want as high an AFUE as your budget can comfortably allow.

Q: When should I replace my furnace?

The lifespan of a modern furnace can swing a bit, but can usually be expected to range within 15-20 years. This depends on how heavily the unit is used, whether or not you get annual furnace maintenance, the type of system you have, the unit’s AFUE, and more factors.

Q: How can I increase my furnace’s energy-efficiency?

There are many modern advancements that can help you with this. For starters be sure to get routine tune-up and maintenance services. They’re a stress-free and low cost way to drastically improve and maintain efficiency. Beyond this keeping up with good heating practices is important. Accessories like programmable thermostats and humidifiers can help quite a bit as well.

Q: Can a humidifier really add efficiency?

And comfort, in fact! Adequately moist air carries heat better, helping minimize cold spots and assisting your system in heating your home more evenly. That means the unit has to work less hard, and thus use less fuel to get the job done. Plus you’ll deal with a lot less dust!

Q: Is a gas or electric furnace better?

Honestly speaking there is no “better.” It’s all about matching your needs with the right system. Electric systems are easily accessible, typically cost less upon purchase (though cost more to operate), and not everyone has access to natural gas. Gas furnaces are very powerful, last longer than electric furnaces, and usually cost less to run and operate.

Q: Does a gas furnace still use electricity?

It does. Many systems including the thermostat, the ignition, and blower systems all use electricity to operate. That means the whole myth of “works when the power’s out!” is just that. A myth, unfortunately.

Q: How do I know when I need repair?

Any time your system is acting unusual is a good time to call in an expert. The cost of a diagnosis is far less than what usually happens if systems are left to get worse (aka furnace replacement). Call an expert if your system is:

  • Operating less effectively than usual
  • Leaving cold spots
  • Leaking water
  • Making loud or weird noises
  • Costing more than usual to run

Q: Why does my furnace smell odd?

That depends on what kind of odd smell you’re dealing with. Dusty, musty odors can be normal at first fire-up at the beginning of the winter. If the odor persists then you probably need to clean your vents, or the unit needs a tune-up. Sulfurous, rotten egg-like odors indicate a gas leak and that’s very dangerous. What you’re smelling is mercaptan, an additive gas companies put in natural gas, which is usually odorless on its own. Shut off your gas and call for service ASAP!

What to expect
Service Scheduling
Contact us today by calling us or completing our online form to schedule your service appointment.
Arrival Text or Phone Call
Your Mountain Air tech will call you when they’re close, so there’s no need to wait around on us all day.
Issue Diagnosis
Your tech will carefully inspect your HVAC system to figure out what the problem is.
Upfront Pricing
Once the issue is diagnosed, your tech will explain possible solutions and the pricing for each, so you make the right decision.
Stress-Free Repairs
Your experienced tech will get to work on resolving the issue while you simply sit back and relax!
See What Our Customers Are Saying
Mountain Air has always been professional I'm very happy we had them put our furnace in.
Terri Hurst
21:44 30 Sep 22
Mike did a fantastic job from 1st visit to results delivered. Fixed our AC, we got on the annual plan, he checked & adjusted our furnace for winter. Mike worked late until after 7pm to get it all done & done well.
J P
01:53 23 Sep 22
Bradley was on time at the appointment today. He was very professional and explained what was being done and asked if I had any questions.
Val Johnson
16:53 22 Sep 22
Had Carson come out and look at my partially unfinished basement to add some vents and a return. Carson was prompt and arrived the same day as when I called. The crew of Landon and Ernesto came out the next day. They were quick and professional. Great experience with everyone involved.
Dustin Adamson (OceanShutter)
14:43 22 Sep 22
From the time I got in touch with Hilary, she came right out the same day, a Friday and gave me a quote, which was within my budget. She was very thorough and professional and extremely knowledgable and friendly. We even discussed ways to save me money, which was extremely helpful to me. All said and done and work approved, she said they could star on the coming Monday (2 days) Wow. The crew of Landon, Ernesto , Jake and Tony showed up right on time Monday morning. Keep in mind that the work to be done is in a crawl space, not a basement, and required them to remove all the existing, damaged aluminum duct work The men were allocated 4 days to do the job. They were done that same day, saving me three days of labor which made my final invoice even less than originally quoted. Now my ductwork is up to current code. This company has my full endorsement and reccomendation to anyone who needs HVAC work done. Many thanks for the high quality work they did. I now have sufficient heatin and A/C air flow to every register in the house. THANK YOU!!!
Jerry Ackroyd
19:50 21 Sep 22