HVAC Installation in Preston, 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 Franklin County will get in touch.
Tell us about the job
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Preston asks a lot of a heating and cooling system
Winter nights here average 16°F from December through February, and heat is on in Preston homes from September through June. That is ten months of the year the furnace has to work, and only two months, July and August, when the air conditioner takes over instead. Almost the whole year, one system or the other is running.
A new system here has to handle both ends of that. It has to hold up on the coldest nights and still keep the house comfortable when summer afternoons reach 80°F. Franklin County has also seen 62 winter storms and 10 damaging wind events over the past ten years, and power in Idaho has gone out for 24 hours or more in 11% of households in 2024. Whatever gets installed should be able to come back on and keep working when the weather turns hard.
- 10 months
- September through June, your system heats
- 2 months
- July through August, it cools
- 16°F
- the average winter night it heats against
- 80°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Idaho requires HVAC contractors to hold a state license.
The Idaho HVAC Board issues the license, and it's tied to the contractor, not to any single job. That means the state tested this contractor and keeps a record of them, but it doesn't inspect this particular installation. That part comes from somewhere else.
For a heating and cooling installation in Franklin County, the local building office is what checks the work itself. Most cities and counties here require a permit before the job starts and an inspection after it's done, which is what confirms the new furnace or air conditioner was installed correctly and safely. The state license tells you who's allowed to do the work. The permit and inspection tell you it was done right.
Sources: Idaho Legislature · Idaho Division of Occupational and Professional Licenses
- When should I replace my HVAC system?
- Once your furnace or air conditioner is breaking down more than once a season, or a repair quote is close to what a new system would run, replacement is usually the better call. Homes here need heat or cooling all year, so the equipment gets used hard with little rest between seasons. Watch for uneven heat between rooms, bills that climb without a clear reason, or a system that's needed more frequent repairs lately. A contractor can look at the actual unit and tell you whether it's worth fixing again or time to swap it out.
- Should I replace my furnace and air conditioner at the same time?
- If both are old, it's often worth doing together, since they share a blower and sometimes a coil that's matched to a specific system. Replacing one and not the other can leave you with mismatched equipment that doesn't run as well as it should. If your air conditioner still has a lot of life left and only the furnace has failed, there's no rule that says you must replace both. A contractor can check the age and condition of each and tell you whether pairing them makes sense for your setup.
- 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 electrical circuit, and the refrigerant lines if it's a cooling system. After that they test it, checking airflow, refrigerant charge and that it cycles on and off 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, along with an inspection once the work is done. Ask the contractor who's pulling the permit and when the inspection will happen, so you know it's covered.