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Furnace FAQs

General Furnace FAQs

Q: I've always had an electric furnace, but I'm considering replacing it with a new gas furnace. Are they safe? Are they efficient?

A: When installed correctly (per manufacturer's instructions and local code requirements) and inspected by the local jurisdiction, then a gas furnace installation should be safe. The highest efficiency we can offer at this time is 98.2%. Less than 3 cents of every dollar spent going out the exhaust! This is a significant savings when  compared to the 20 cents of every dollar loss in an 80% efficiency model, the industry minimum.  

Q: If I smell gas, what should I do?

A: If a gas odor is noted inside the home, the following steps are recommended: NOTE: All phone calls should be made from outside the home. Do not use the phone inside the home or turn any power or light switches off or on during this time. Then contact 1) the local Fire department (911). 2) Intermountain Gas Company (Phone: 1-(877)-777-7442) or the local gas supplier.  3) a local heating contractor.   

Q: I've had a gas furnace for multiple years. It is running fine, but now I have headaches after being in my home for short periods of time. What should I do?

A: Contact one of the 3 agencies listed above. A service call may reveal a furnace problem needing correction. The single biggest concern is possible carbon monoxide exposure. Fire departments, gas suppliers, and heating contractors should all be able to use testing instruments to verify this problem. Provide an opening (crack open a window or door) to provide fresh air inside the home while waiting for this testing to be done. 

Q: How does the furnace type affect the 'feel' of the air blowing from the vents?

A: All fossil fuel-type furnaces (i.e. gas, oil, coal) produce the warmest air coming out of the registers. Fossil fuel furnaces are more comfortable than heat pumps.

Q: I would like to put a propane gas furnace in my basement because natural gas is not available, but I was not allowed to. Why is this?

A: Code requirements for furnace installations are a protection for homeowners. In this particular case, the concern is that propane gas (because propane is heavier than air) may accumulate in the basement and lead to a dangerous situation. Please discuss any installation questions with your local heating contractor or local building authority.


Q. Which fuel type is the least expensive to operate?

A. This is something that is constantly changing. Propane and Oil fuel pricing are not regulated by the government so they fluctuate by market supply and demands. Electricity and Natural Gas are regulated by the Public Utility Commission, so those prices are more stable. A dual-fuel system (i.e. natural gas and a heat pump, oil and a heat pump, propane and a heat pump) is recommended so you are not dependent upon one fuel source establishing your cost of operation.


Q. What fuel type is the least comfortable?

A. A heat pump is the least comfortable due to the tepid temperature of the air. The temperature of the air changes about 20 degrees coming out of the registers. If you have your thermostat set at 73 F, in the winter the air coming out of the registers will be about 93 F. Since your body temperature is about 98 F, this air will feel cool. A home heated with a heat pump will often need a humidifier to feel warm in the winter.  









Lennox Furnace FAQs

Q: What types of Lennox Furnaces are available?
A: Lennox offers a wide range of 80% and 90% Natural Gas furnaces, as well as electric and oil furnaces. There are several models available in each type.   

Q: Why does Lennox offer such a large range of furnaces?
A: There are several different factors: required BTUs, blower size, blower type, CFMs produced, external static pressure, location/application, efficiencies, and cost.

Q: What are the major differences in the Lennox furnaces?
A: There are several: type of igniter, furnace construction, type of blower, single or 2-stage gas valve, efficiency, warranty, and application.

Q: Are Lennox furnaces LP ready?
A: All Lennox gas furnaces can be converted to LP.

Q: Are there limitations about where a Lennox furnace can be installed?
A: Yes, there are certain locations that furnaces cannot be installed (please check with manufacturer's installation instructions, your heating contractor, and local building codes). Typical furnace locations include garages, attics, crawl spaces, and indoor closet spaces.

Q: What does external static pressure mean? Should this be a factor in my Lennox furnace purchase?
A: External static pressure relates directly to how much air (CFMs) a furnace can deliver, given the location altitude and air restrictions placed on it (i.e. filter, ducting, and refrigeration coil). External static pressure should be a consideration that your heating contractor should be aware of when discussing new or replacement equipment.