Furnace Installation in Dubuque, IA
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Dubuque County will get in touch.
Tell us about the job
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Dubuque County asks a lot of a furnace
Your furnace runs from October through May here, eight months of the year. Winter nights average 15°F, so it isn't running to take the edge off. It's running to keep a house livable, night after night, for most of the year.
Most homes in the area heat with gas, and any new non-weatherized gas furnace has to reach at least 80 percent AFUE by federal rule. That's the floor, not a feature. Storms are part of the picture too. The area has logged 24 winter storms and 118 damaging wind events over the past ten years, and in 2024, 15 percent of Iowa households lost power for at least a day. A furnace that starts reliably matters when the cold outside isn't going anywhere.
- 8 months
- October through May, your furnace is on duty
- 15°F
- the average winter night it heats against
- 71%
- of homes here heat with gas, so most furnaces here burn gas
- 80% AFUE
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
A high-efficiency gas furnace would save about $100 a year to run in Dubuque County compared with a gas furnace.
Estimates for a typical Dubuque County home, from EIA household energy data, Iowa fuel prices and NOAA climate normals. Your home will differ.
Iowa requires HVAC contractors to hold a state license.
The Iowa Plumbing and Mechanical Systems Board tested the contractor before handing out that license, and it keeps a record of who holds one. The license belongs to the contractor, not to this particular furnace job, so it tells you the person or company has met the state's standard, not that this installation has been checked on its own.
That check comes from the local building office instead. A furnace install in Dubuque County needs a permit, and an inspector looks at the completed work before it's signed off, gas connections included. With most homes in the county heating with gas, that inspection is the step that catches a bad hookup on a job like this one.
Sources: Iowa Legislature · Iowa Department of Inspections, Appeals and Licensing
- What size furnace does my house need?
- The right size comes from a load calculation, not the square footage of your house. A contractor measures your walls, windows, insulation and layout and runs a Manual J calculation to find the exact heat loss on a cold night. Too big and the furnace short cycles, heating the air fast but never running long enough to warm the house evenly. Too small and it runs constantly through those 15°F nights and still falls behind. With homes here needing heat eight months a year, from October through May, getting this number right matters more than it would somewhere milder.
- How do I know it's time to replace my furnace?
- Age is the first sign. Most furnaces have a long service life, and once a furnace is old, repairs get more frequent and less worth paying for. Watch for uneven heat between rooms, a furnace that cycles on and off more than it used to, or a jump in your gas bill with no other explanation. If a repair is quoted close to the cost of a new furnace, most contractors will tell you to replace it instead. With gas heat running eight months of the year here, a furnace on its way out shows itself fast.
- Is a high-efficiency furnace worth it?
- It depends on how long you plan to stay in the house and what your current furnace costs to run. High-efficiency furnaces waste less gas than the 80.0 percent AFUE minimum required for non-weatherized gas furnaces built since November 2015. In a place where 71.2 percent of homes heat with gas and the furnace runs from October through May, that difference in efficiency adds up over a full season. A contractor can run the numbers for your specific furnace and house and tell you whether the higher upfront cost pays back in a reasonable time.