Furnace Installation in La Crosse, WI
A new furnace here will run from October through May every year. Tell us about the house, and a licensed contractor who covers La Crosse County will get in touch.
Tell us about the job
It takes about a minute.
Eight months of heat, and nights near 12 degrees
La Crosse asks a furnace to run from October through May. That's 8 months of the year, not just the deep winter stretch, and the nights it works hardest average 12°F. A furnace sized and installed for that has to hold up to months of steady cycling, not just a handful of cold snaps.
The area has seen 21 winter storms and 100 damaging wind events over the past ten years, and in 2024, 18% of Wisconsin households lost power for at least 24 hours. A furnace installed here should start back up on its own once power returns. Most La Crosse homes heat with gas, and any new non-weatherized gas furnace has to meet the federal minimum of 80 percent AFUE.
- 8 months
- October through May, your furnace is on duty
- 12°F
- the average winter night it heats against
- 61%
- 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 La Crosse County compared with a gas furnace.
Estimates for a typical La Crosse County home, from EIA household energy data, Wisconsin fuel prices and NOAA climate normals. Your home will differ.
Wisconsin requires contractors to register with the state.
That registration puts the business on file with the state. Nobody tested the contractor's furnace work to get on that list, and the state doesn't hold a trade exam for it. What it does mean is the business is on record, and counties and cities in Wisconsin can't layer their own HVAC license on top of that, so this is the one state record that exists no matter where in La Crosse County the job is.
For a furnace install, the protection that actually checks the work is the permit. Most cities and counties require one for a furnace replacement, with an inspection once the job is done, and that inspection is what catches a bad gas connection, which is the part of this job that can hurt someone. Gas heat runs 60.9% of the homes in La Crosse County, so that inspection is doing real work here.
Sources: Wisconsin Legislative Reference Bureau · Wisconsin Department of Safety and Professional Services
- What size furnace does my house need?
- The right size depends on your house, not a rule of thumb like square footage alone. A contractor works out the load by looking at your insulation, your windows, your ceiling height, and how the place is laid out, since two homes the same size can need different output. Too big and it short cycles, heating fast then shutting off before it warms the place evenly. Too small and it runs constantly through the cold months and still can't keep up. Have a contractor run a load calculation on your house before you buy anything.
- How do I know it's time to replace my furnace?
- Watch for rooms that won't hold heat, a furnace that cycles on and off more than it used to, and repair calls that keep coming back. Age matters too. An older furnace works harder than it used to, and parts get harder to find as it ages. With 8 months of heating a year here, from October through May, a furnace that's struggling has a lot of season left to get through. If yours is old and the repairs keep stacking up, replacing it before it fails on a 12°F night is worth talking through with a contractor.
- 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. Any non-weatherized gas furnace built since November 2015 has to hit at least 80 percent AFUE, so even a standard replacement today is more efficient than an older unit. High-efficiency furnaces go beyond that baseline, which matters more here given homes need heat 8 months out of the year, from October through May. A contractor can walk through the difference in output and installation for your specific house.