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
I first called Any Hour heating and plumbing and it felt like their primary goal was to sell me a new furnace. I did not like that. I was referred by a buddy in clinton to call Mountain Air. I called them this morning and they had a tech out 2 hours later. Loved that. Abel was honest and empathic to my situation but i loved the fact he was no nonsense. He talked to me like i was not a complete idiot which i always appreciate. He layed down the situation i was facing and made the solution seem effortless but within my budget. Based on the quote i got from Mountain Air compared to Any Hour's, the cost to fix parts was almost 40% cheaper. When it was found out that i did need a new furnace, an hour later Drew (very handsome btw) came over and listened to my needs and budget and got me setup for install 1 business day later. As Drew left my freezing home after i had already signed the contract, he offered to leave me 2 space heaters for my house until the install was done. What HVAC company sends their SALES people out with space heaters to offer???? Mountain Air does!!!Any Hour was very professional and did a good job while they were here.Mountain Air just raised the bar from a customer service prospective and more importantly from a cost prospective. If i can get better more personal service along with a better financial option i will never call another HVAC company again. MOUNTAIN AIR has a customer for life in me!!!!!SincerelyGregory from Roy Utah
Greasha Kline
20:03 15 Jan 22
Our heater started short cycling. I submitted an online request in the middle of the night. The following morning, I received a text, phone call and email asking if we still needed assistance. The office gathered our addr and further info, advising a tech would respond before Noon. Later that day, the office sent a text advising Daniel was on his way and that he'd be calling. He called and gave us an accurate eta of his arrival. Daniel was kind, accurate, professional, and thorough in his work. Our entire experience was so very smooth, with excellent communication. I will most certainly recommend and use Mountain Air again. Thank you for keeping our family warm this winter!
Kimberly Stokes
18:23 13 Jan 22
Absolutely the only place to get quality HVAC service! I've been doing contracting since 2007 and Mountain Air is your best option for your HVAC needs. There staff and products are the absolute best around! Being a contractor and knowing what I know, I wouldn't waste my time calling anyone else. They handle my commercial and residential projects.
Clint Willis
14:53 13 Jan 22
Mountain air is always professional, timely and courteous. The communications I receive are very helpful.
tim maguire
02:22 08 Jan 22
Mountain Air was great, Chad was knowledgeable and friendly. It always nice when people enter your home with a smile and are willing to go the extra mile.
Katherine Tesch
23:58 05 Jan 22