HVAC Installation in Boise City, ID
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Ada County will get in touch.
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Ada County asks a lot of a heating and cooling system
Eleven months out of the year, a system here is doing something. Heat from October through May, cooling in June through August. Winters are the longer stretch, and the harder one. Nights average 25°F from December through February, and most homes here heat with gas, so the furnace and its burner carry those months.
Summer asks less time but real heat, with afternoons averaging 88°F. A new system has to hold up on both ends without either season wearing it out early. Idaho has seen 27 winter storms and 41 damaging wind events over the past ten years, and 11% of households went at least 24 hours without power in 2024. Worth asking any contractor how the system you choose handles a cold night if the power goes out with it.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 25°F
- the average winter night it heats against
- 88°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 belongs to the contractor, not to any single job. It means the state has tested this contractor and keeps a record of them, not that this particular installation has been checked.
For a heating and cooling installation, that check comes from the local building office instead. In most cities and counties, putting in a new furnace and air conditioner or a heat pump calls for a permit, and an inspection once the work is done. The license and the permit answer different questions. One is about who is allowed to do the work. The other is about whether this job was done right.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- When should I replace my HVAC system?
- Replace it when repairs keep coming back or the system can no longer keep up on the coldest or hottest days. An aging furnace or air conditioner works harder than it used to, and parts get harder to find as a unit gets older. With winter lows around 25°F here, a furnace that struggles in December is a sign to plan a replacement before it fails outright. If a contractor tells you a repair costs a large share of what a new system would, that is usually the point to stop repairing.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, replacing them together makes sense, since a furnace and air conditioner installed years apart often were not matched to run well as a pair. A mismatched system can wear out sooner and won't heat or cool as evenly. Homes here need heat for eight months and cooling for three, so both sides of the system carry real weight over a year. If one unit is much newer than the other, a contractor can tell you whether it is worth keeping.
- 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 the ducts, gas line or refrigerant lines, and wiring the job calls for. They test the system to check airflow, temperature rise, and that it cycles on and off the way it should. In most cities and counties here, this work needs a permit from the local building office and an inspection once it is done. That inspection is there to confirm the work meets code before you rely on the system for the winter ahead.