HVAC Installation in Rexburg, ID
A new system here will heat from September through June and cool 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.
Rexburg asks a lot of a heating and cooling system
Winter nights here average 14°F from December through February, and a new furnace has to hold that line from September through June, ten months of heating a year. That is most of the calendar. Whatever goes in has to be sized to run that long without strain, not just to survive the coldest night.
July is the only month that asks for cooling, with afternoons averaging 79°F, so the system still has to switch over and handle heat on the other end. More than half the homes here heat with gas, and a new system should fit how the rest of the house runs. Idaho has seen 103 winter storms and 60 damaging wind events over the last ten years, and 11 percent of households went at least 24 hours without power in 2024. A furnace installed here should come back on its own once the power does.
- 10 months
- September through June, your system heats
- 1 months
- July through July, it cools
- 14°F
- the average winter night it heats against
- 79°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Idaho requires HVAC contractors to hold a state license.
Idaho licenses HVAC contractors through the state's HVAC Board. That license is held by the contractor's business, not issued for each job, so the same license covers this installation and every other job that contractor takes on in Idaho.
For an installation in Madison County, that license is what stands behind the contractor doing the work. Most cities and counties also require a permit from the local building office for a new furnace, air conditioner or heat pump, with an inspection once the job is done.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- When should I replace my HVAC system?
- Once your furnace or air conditioner is old enough that repairs are getting frequent, or the repair itself costs a large share of what a new system would, replacement is usually the better call. Age matters too. A furnace working hard for 10 months of the year, like it does here, puts in more hours than one in a milder climate, and that shortens its working life. If your system is struggling to keep the house at 14 degree nights, or it's shutting down when you need it most, don't wait for it to fail completely before you start looking at a replacement.
- Should I replace my furnace and air conditioner at the same time?
- If both units are close in age, replacing them together is often worth considering, even though your air conditioner only runs about a month out of the year here. The furnace and air conditioner usually share the same air handler and ductwork, so replacing one can mean the other is next in a year or two anyway. A contractor can look at the age and condition of each unit and tell you whether pairing the replacement makes sense for your house, or whether the air conditioner has enough life left to wait.
- What happens during an HVAC installation?
- A contractor removes the old furnace, air conditioner or heat pump and sets the new equipment in place, then connects it to your ductwork, gas line or refrigerant lines, and electrical. After that comes startup and testing, where the contractor checks airflow, checks the thermostat controls, and confirms the system runs the way it should. Replacing a furnace, air conditioner or heat pump needs a permit from the local building office in most cities and counties, and an inspection once the work is done. Your contractor will typically handle pulling that permit and scheduling the inspection as part of the job.