AC Installation in Sheboygan, WI
A new air conditioner in Sheboygan will run from July through August every year. Tell us about the house, and a licensed contractor who covers Sheboygan County will get in touch.
Tell us about the job
It takes about a minute.
Two months of real heat, and a lot of hail before it
Sheboygan only asks a lot of your air conditioner for about two months, July and August, with summer afternoons averaging 78°F. That is a short season, but it still needs to hold up when it runs, and a new unit sitting outside all year needs to hold up before it ever runs too. The area has logged 22 hail events and 46 damaging wind events over the past ten years, with hail up to 1.75 inches. That is what the outdoor unit sits through.
Any new central air conditioner installed today has to meet 13.4 SEER2, the federal efficiency minimum that took effect in 2023. Whatever size or brand goes in, it starts from that baseline.
- 2 months
- July through August, your air conditioner is on duty
- 78°F
- the average summer afternoon it cools against
- 22 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 Sheboygan 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.
Registration means the business is on file with the Department of Safety and Professional Services. Nobody tested this contractor's trade knowledge to get that record. Wisconsin does not license HVAC work the way it licenses some other trades. Counties and cities cannot add their own HVAC license on top of it either, so the registration is the same wherever you are in the county.
For an air conditioner installation, the protection you have comes from elsewhere. In most cities and counties this job needs a permit from the local building office, and an inspection once the work is done. That inspection is what checks the installation was done right, not the registration.
Sources: Wisconsin Legislative Reference Bureau · Wisconsin Department of Safety and Professional Services
- What size air conditioner does my house need?
- The right size depends on your square footage, your ceiling height, how much shade your house gets, and how well it holds cold air, so there's no single number that fits every home. A contractor works this out with a load calculation, not a chart based on square feet alone. Going too big is just as much a problem as going too small, since an oversized unit cools the air fast but shuts off before it pulls the moisture out, leaving the house feeling clammy. Have a contractor measure your house and size the unit to it.
- Should I replace the whole system or just the outdoor unit?
- If your indoor coil and outdoor unit weren't matched and installed together, replacing just the outdoor unit usually isn't a good idea. The coil and the condenser are built to work as a pair, and mismatched parts run less efficiently and wear out sooner. Age matters too. If the indoor coil is old enough that the outdoor unit will likely outlast it, replacing both now instead of twice saves you the second labor cost down the road. A contractor can look at both parts and tell you whether they're still a good match.
- Do HVAC contractors in Sheboygan 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. This registration is what lets a business legally operate as a contractor in the state. Before hiring anyone, it's worth asking for their registration so you know who is working in your house.


