AC Installation in La Crosse, WI
A new air conditioner in La Crosse will run from June through August 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.
Three months of real heat, and hail to build for
La Crosse gets three months of cooling weather, June through August, with afternoons averaging 80°F. That is not a long season, but a new system still has to keep up on the hottest days it brings.
The bigger factor here is what sits outside through the rest of the year. The county has logged 66 hail events and 100 damaging wind events over the past ten years, with hail up to 4 inches. The outdoor unit takes that weather directly, so how it stands up matters as much as how it cools. Any new central air conditioner installed today also has to meet the federal minimum of 13.4 SEER2.
- 3 months
- June through August, your air conditioner is on duty
- 80°F
- the average summer afternoon it cools against
- 66 hail events
- in ten years, and hail bends the fins on outdoor coils
- 13.4 SEER2
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Going above the federal minimum saves little here, about $20 a year.
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 means the state has the business on file, a name and address to trace back to if something goes wrong. It is not a test of the work itself. Nobody at the state checks that the registered contractor actually knows how to size or install an air conditioner. And because counties and cities in Wisconsin can't layer on their own HVAC license, that registration is the only state-level record that exists for this job anywhere in La Crosse County.
The part that actually gets checked here is the permit. Installing an air conditioner in most cities and counties means the local building office has to issue a permit and send someone out to inspect the finished work once it's done. That inspection is what stands in for the exam Wisconsin's registration doesn't require.
Sources: Wisconsin Legislative Reference Bureau · Wisconsin Department of Safety and Professional Services
- What size air conditioner does my house need?
- The right size comes from a load calculation, not a chart based on square footage. A contractor looks at your home's insulation, window area, ceiling height, and layout to figure out how much heat your house actually gains on a hot afternoon. An oversized unit cools the air fast but shuts off before it pulls the humidity out, so the house feels clammy. An undersized one runs constantly and still can't keep up when it's 80 degrees outside. A contractor can walk through your house and size it correctly.
- Should I replace the whole system or just the outdoor unit?
- In most cases both the outdoor unit and the indoor coil need to be replaced together. Air conditioners are matched sets, and the compressor in a new outdoor unit is built to work with a coil of a specific type and capacity. Pairing a new outdoor unit with an old coil can mean the system never reaches its rated efficiency, and some manufacturers won't warranty the new unit if it's matched with old parts. A contractor can look at your existing coil and tell you whether it can be kept.
- Do HVAC contractors in La Crosse need a state license to work on my home?
- Wisconsin requires HVAC contractors to register with the state through the Department of Safety and Professional Services. Registration means the state has verified who the contractor is and that they're authorized to do this work in Wisconsin. Before hiring anyone, it's worth asking for their registration and confirming it's current.