Wyoming HVAC Match
Overhead view of an outdoor AC condenser unit on a concrete pad next to a house with a dark shingle roof.

AC Installation in Casper, WY

A new air conditioner in Casper will run from July through August every year. Tell us about the house, and a licensed contractor who covers Natrona County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Overhead view of an air conditioning condenser unit on a concrete pad next to a house with asphalt shingle roofing and vinyl siding.

Casper only needs cooling two months a year, but hail is the real test

July and August are the stretch that matters here, with summer afternoons averaging 81°F. That is a short season, and it means a new air conditioner spends most of the year sitting outside doing nothing at all.

What it has to survive is a different question. Natrona County has logged 44 hail events and 269 damaging wind events over the past ten years, with hail up to 2.5 inches recorded. The outdoor unit sits exposed to all of it. Any new central air conditioner installed today also has to meet the federal minimum of 13.4 SEER2, so efficiency is set before you even start comparing units.

2 months
July through August, your air conditioner is on duty
81°F
the average summer afternoon it cools against
44 hail events
in ten years, and hail bends the fins on outdoor coils
13.4 SEER2
the federal minimum any new unit must meet
Isometric grayscale illustration of a cutaway house with the roof lifted, showing interior rooms, ductwork, an indoor air handler, and an outdoor condenser unit beside the building.
Your air conditioner works hardest from July through August.

NOAA nClimDiv, 1991–2020 normals

Overhead view of a gray outdoor AC condenser unit on a concrete pad beside a mulched garden bed and a house with vinyl siding.

Going above the federal minimum saves little here, about $10 a year.

  • A higher-efficiency unit$140 a year
  • A new unit at the federal minimum, 13.4 SEER2$150 a year

Estimates for a typical Natrona County home, from EIA household energy data, Wyoming fuel prices and NOAA climate normals. Your home will differ.

What size air conditioner does my house need?
The right size depends on your square footage, your insulation, how many windows you have, and which way your house faces, so it takes a load calculation to get a real answer. A unit that's too big cools the air fast but shuts off before it pulls the moisture out, leaving the house feeling clammy. One that's too small runs constantly during those hot July and August afternoons and still can't keep up. A contractor can run the numbers for your house and size it correctly.
Should I replace the whole system or just the outdoor unit?
In most cases you want to replace both at once. The outdoor unit and the indoor coil are matched to work together, and pairing a new condenser with an old coil usually means you lose efficiency and can run into compatibility problems. Age matters too. If your indoor coil is old enough that the outdoor unit needs replacing, it's usually close to the end of its own life. A contractor can look at both and tell you if the coil has enough life left to make a partial replacement worth it.
Do HVAC contractors in Casper need a state license to work on my home?
Ask to see a license before you hire anyone. A licensed contractor carries insurance too, which matters if something goes wrong during the job. If a contractor won't show you a license number, that's a reason to call someone else.
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