HVAC Installation in Mountain Home, ID
A new system here will heat from September through June and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Elmore County will get in touch.
Tell us about the job
It takes about a minute.
A system built for ten months of heat and two of real summer
Mountain Home asks a lot of a heating system. Winter nights average 21°F from December through February, and homes here need heat from September clear through June, ten months of the year. That's a long stretch of the burner or the heat pump cycling on, night after night. Summer only asks for two months of cooling, but afternoons averaging 83°F still mean the system needs to handle real heat when July and August come around.
More than half the homes here heat with gas, so a new furnace has to meet the federal minimum efficiency rating whether it's replacing an old one or going into a home for the first time. Whatever gets installed, it should be sized for both jobs, ten months of cold and two months of heat, not just one or the other.
- 10 months
- September through June, your system heats
- 2 months
- July through August, it cools
- 21°F
- the average winter night it heats against
- 83°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Idaho requires HVAC contractors to hold a state license.
The HVAC Board licenses the contractor, not the individual job. That means the state has tested this contractor and keeps a record of them, but no state inspector shows up to check the work on your system once it is done.
That check comes from your local building office instead. In most cities and counties in Idaho, installing a new furnace, air conditioner or heat pump needs a permit and an inspection once the work is finished. The inspection is what confirms this particular installation, in your home, was done right.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- When should I replace my HVAC system?
- Replace it when repairs get frequent, the unit is old, or it can no longer keep the house comfortable. A furnace or air conditioner nearing the end of its life tends to break down more often and cost more to keep running each time. With heat needed here from September through June, a furnace that struggles in that stretch is worth replacing before it fails on a cold night. If a contractor has told you a repair costs a large share of what a new system runs, that is usually the point to stop patching it.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together often makes sense, but it depends on the condition of each one. A furnace and air conditioner installed years apart can still work fine on their own. What matters more is whether each unit is still running well and whether they were matched to work together in the first place. A contractor can look at both and tell you whether one or both need to go.
- What happens during an HVAC installation?
- A contractor removes the old furnace, air conditioner, or both, and sets the new equipment in place, connecting it to the ductwork, gas line or electrical circuit, and the condensate drain. Once everything is connected, the system gets tested to make sure it heats and cools correctly and that the thermostat controls it the way it should. In most areas around Mountain Home, this work needs a permit from the local building office, and an inspector checks the job once it is done. That inspection is there to confirm the installation was done to code, which matters for a system that has to run through cold winters and hot summer afternoons here.