HVAC Installation in Jerome, ID
A new system here will heat from September through May and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Jerome County will get in touch.
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A new system in Jerome works nine months of heat and two of cooling
Heat runs September through May here, then the air conditioner takes over for July and August. That is 11 months out of 12 where the system has to work. A new furnace or heat pump has to start on winter nights that average 22°F, and a new air conditioner has to hold up on summer afternoons averaging 85°F. Close to half the homes in Jerome heat with electricity, so a heat pump or electric furnace is doing real work on those cold nights, not just topping off a mild day.
Jerome County has had 12 winter storms and 18 damaging wind events over the last ten years. Statewide, 11 percent of Idaho households were without power for at least 24 hours in 2024. A new system installed right should come back on its own once power returns, and start reliably on the coldest night as well as the hottest afternoon.
- 9 months
- September through May, your system heats
- 2 months
- July through August, it cools
- 22°F
- the average winter night it heats against
- 85°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Idaho requires HVAC contractors to hold a state license.
The license is issued to the contractor, not the job, so it does not get renewed or re-checked each time a crew shows up. It means the state tested this contractor's knowledge of the trade and keeps a record of who they are. What it does not do is inspect any particular installation.
That's where the local building office comes in. Setting up a new heating and cooling system in Jerome County means pulling a permit and having the work inspected once it's done, in most cities and counties. That inspection is what actually checks the gas and electrical connections on this job, the part where a mistake is dangerous. The state license tells you who's allowed to do the work. The permit and inspection tell you whether this particular installation was done right.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- When should I replace my HVAC system?
- Replace it when repairs start happening every year or the unit is old enough that a breakdown could leave you without heat in the cold months. Homes here need heat from September through May, so a furnace that fails has a lot of chances to fail. If a contractor tells you the heat exchanger is cracked or the compressor is failing, that's a replace, not a repair. Age matters too. A furnace or air conditioner running well past its expected life is more likely to fail at the worst time, and parts get harder to find the older it gets.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, yes, it's worth doing together. Homes here need heat nine months a year and cooling only two, so the furnace does most of the work and tends to wear out first. But if your furnace and air conditioner share the same air handler or were installed at the same time, replacing one and not the other can mean matching an old unit to a new one that isn't built to run with it. A contractor can tell you whether your two systems are paired closely enough that this matters for your house.
- What happens during an HVAC installation?
- A contractor removes the old furnace and air conditioner or heat pump, then sets the new equipment, connects it to your ductwork, gas line or electrical circuit, and to the refrigerant lines if it's an AC or heat pump. Once it's connected, they test it, checking airflow, gas pressure or electrical draw, and refrigerant charge, before they leave. Replacing this kind of equipment needs a permit from the local building office and an inspection when the job is done. That inspection confirms the work was done to code, so don't skip it even if the contractor doesn't bring it up.