Wyoming HVAC Match
Aerial view of a square outdoor air conditioning condenser unit on a concrete pad beside a house wall with a sliding glass door.

AC Installation in Newcastle, WY

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

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
Overhead view of an outdoor AC condenser unit on a concrete pad next to a house with a dark shingle roof.

Short cooling season, hard weather outside

Your air conditioner only has to work July and August here, with afternoons averaging 83°F. Two months is not long, but the unit still needs to be sized right for those weeks, since one that's too big or too small will struggle the whole time it runs.

The outdoor unit is what takes the beating. Weston County has logged 110 hail events and 102 damaging wind events over the past ten years, with hailstones up to 2.75 inches. That's what the condenser sits through outside, season after season. Any new central air conditioner installed today also has to meet the federal minimum of 13.4 SEER2.

2 months
July through August, your air conditioner is on duty
83°F
the average summer afternoon it cools against
110 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 line illustration of a cutaway house showing interior rooms, ceiling ductwork connected to an indoor air handler, and an outdoor condenser unit linked by refrigerant lines.
Your air conditioner works hardest from July through August.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit on a concrete pad next to the gray vinyl siding of a residential home.

Going above the federal minimum saves little here, about $20 a year.

  • A higher-efficiency unit$200 a year
  • A new unit at the federal minimum, 13.4 SEER2$220 a year

Estimates for a typical Weston 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?
It depends on your home's square footage, insulation, window placement, and layout, not just a rule of thumb. An undersized unit will run constantly and still struggle on the hottest afternoons. An oversized one cools the air fast but shuts off before it pulls enough moisture out, so the house feels clammy. A contractor will do a load calculation on your actual home to get this right.
Should I replace the whole system or just the outdoor unit?
If your indoor and outdoor units are more than a few years apart in age, replacing just the outdoor unit usually causes problems. The two are matched to work together, and pairing a new outdoor unit with an old indoor coil can hurt efficiency and shorten the life of both. New units also need to meet the current 13.4 SEER2 minimum, and an old coil often cannot handle that properly. A contractor can look at both parts and tell you whether the coil is worth keeping.
Do HVAC contractors in Newcastle need a state license to work on my home?
A licensed contractor is worth insisting on. Ask to see the license number before work starts and check that it's current. Licensed contractors also carry the insurance that protects you if something goes wrong during the job.
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