Iowa HVAC Match
A snow-covered suburban house at dusk with one illuminated window and a double garage door.

Furnace Installation in Fort Dodge, IA

A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers Webster County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
A gray forced-air furnace with metal ductwork stands in an unfinished basement with exposed wooden joists, concrete walls, and a single hanging light bulb.

Fort Dodge asks a furnace to work eight months of the year

Winter nights here average 13°F from December through February, and homes need heat from October through May. That is eight months of the year your furnace has to be ready to run.

Most homes in Webster County heat with gas, and any new furnace installed has to meet the federal minimum of 80 percent AFUE. Iowa has also seen 31 winter storms and 39 damaging wind events over the past ten years, and in 2024, 15 percent of households in the state lost power for 24 hours or more. A furnace installed here needs to hold up through that kind of winter, not just a mild one.

8 months
October through May, your furnace is on duty
13°F
the average winter night it heats against
63%
of homes here heat with gas, so most furnaces here burn gas
80% AFUE
the federal minimum any new unit must meet
Isometric grayscale illustration of a cutaway house showing an interior furnace with a tall flue pipe and ductwork running to rooms under a partially lifted roof.
Your furnace works hardest from November through March.

NOAA nClimDiv, 1991–2020 normals

An unfinished basement featuring concrete block walls, exposed floor joists, a bare concrete floor, and a forced-air furnace with a large metal exhaust duct in the corner.

A high-efficiency gas furnace would save about $100 a year to run in Webster County compared with a gas furnace.

  • A high-efficiency gas furnace$470 a year
  • A gas furnace$570 a year

Estimates for a typical Webster 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 state license comes from the Iowa Plumbing and Mechanical Systems Board. It covers the contractor as a business, not the furnace or the job itself, so the same license applies whether the work is a repair or a full installation.

For this job, the license tells you the contractor is on record with the state. What covers the installation itself is the local permit and inspection that most Iowa cities and counties require when a furnace gets replaced. That inspection is where the work gets checked once it's done. In Webster County, 63.2% of homes heat with gas, which is the kind of furnace this installation most likely involves.

Sources: Iowa Legislature · Iowa Department of Inspections, Appeals and Licensing

What size furnace does my house need?
A contractor works this out with a load calculation, not by matching the size of the furnace you have now. That calculation looks at your square footage, insulation, windows, ceiling height, and how the house is laid out. A furnace that is too big cycles on and off too fast and never runs long enough to heat evenly. One that is too small runs constantly and still cannot keep up on the coldest nights here, when the temperature drops toward 13°F. Homes in Fort Dodge need heat eight months of the year, from October through May, so getting this number right matters more here than somewhere with a short winter.
How do I know it's time to replace my furnace?
Age is one thing to look at, along with how the furnace has been running. If you are calling a repair technician more often than you used to, or a repair would cost close to what a new furnace would, that is worth weighing against replacement. Watch for signs like uneven heat between rooms, a furnace that runs longer than it used to, or a rise in gas use without a reason. If a technician tells you the heat exchanger is cracked, that is not a repair, that is a replacement, since a cracked heat exchanger can let combustion gases into your home. With Webster County winters demanding heat for eight months straight, a furnace that is failing is a bigger risk here than in a place where it only has to work a few weeks a year.
Is a high-efficiency furnace worth it?
It depends on how long you plan to stay in the house and what your current furnace is costing you to run. Every non-weatherized gas furnace made since November 19, 2015 has to reach at least 80 percent AFUE, so even a standard furnace today wastes less gas than an older one might. A high-efficiency furnace pushes that number higher, which means less heat lost out the flue. In a place where 63.2 percent of homes heat with gas and furnaces run eight months a year, that difference in efficiency adds up over more months than it would somewhere with a shorter heating season. A contractor can price out both options for your specific house and give you the real numbers to compare.