AC Installation in Rexburg, ID
A new air conditioner in Rexburg will run from July through July every year. Tell us about the house, and a licensed contractor who covers Madison County will get in touch.
Tell us about the job
It takes about a minute.
One short cooling season, but hard on the wind and hail
Rexburg gets a real summer with afternoons averaging 79°F, but the season is short. Once it passes, the unit sits idle most of the year.
That idle time comes with its own risk. Madison County has logged 60 damaging wind events and 5 hail events over the past ten years, with hailstones up to 1.75 inches. An outdoor unit needs to hold up to that sitting outside through all of it. Any new system installed here also has to meet the federal efficiency minimum of 13.4 SEER2.
- 1 months
- July through July, your air conditioner is on duty
- 79°F
- the average summer afternoon it cools against
- 5 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 $10 a year.
Estimates for a typical Madison County home, from EIA household energy data, Idaho fuel prices and NOAA climate normals. Your home will differ.
Idaho requires HVAC contractors to hold a state license.
Idaho licenses HVAC contractors through the state's HVAC Board. That license belongs to the contractor, not to this particular job, so it covers the person doing the work whether they are installing an air conditioner or working on a furnace.
For an air conditioner installation in Madison County, that state license is what stands behind the person doing the work. It is not the only check on the job. Most cities and counties also require a permit before a new air conditioner goes in, along with an inspection once the work is done, so the local building office looks at the finished installation separately from what the state license covers.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- 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 a contractor needs to measure your home to answer this. Guessing at size, or going by the old unit's rating without checking it was ever correct, is how you end up with a system that short cycles or never quite cools the house. A contractor doing an installation in Rexburg will run a load calculation on the house itself. That number matters more than the size of the house next door, even if it looks the same from the street.
- Should I replace the whole system or just the outdoor unit?
- If your furnace or air handler is old too, replacing just the outdoor unit can cause problems even if it seems like the cheaper fix. Air conditioners are matched to the indoor coil and blower they run with, and pairing a new outdoor unit with an old indoor one can mean the system never reaches the efficiency or cooling it's rated for. A contractor can check whether your existing indoor components can handle the new unit. Age matters too. If the indoor unit is old enough that it's a few years from needing replacement on its own, doing both now is usually the straighter path.
- Do HVAC contractors in Rexburg need a state license to work on my home?
- Yes. Idaho requires HVAC contractors to hold a state license, issued by the state's HVAC Board, and that applies to installing an air conditioner in your home. Most cities and counties also require a permit for this work, with an inspection once it's done. Ask to see the license before work starts, and confirm the permit gets pulled. Both protect you if something about the installation doesn't hold up later.