HVAC Installation in Conway, NH
A new system here will heat from September through May and cool from July through July every year. Tell us about the house, and a licensed contractor who covers Carroll County will get in touch.
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A system built for nine months of heat and one month of cooling
Conway needs heat from September through May, nine months of the year. Winter nights average 12°F from December through February, so a new furnace or heat pump has to be sized for real cold, not just a chill. Cooling only comes into it in July, when afternoons average 77°F, so whatever goes in will spend most of its life heating and a short stretch cooling.
A lot of homes here still heat with fuel oil, and whatever replaces or joins that system needs to hold up through the same nine months. Carroll County has seen 103 winter storms and 70 damaging wind events over the past ten years, and statewide, 22% of households went at least 24 hours without power in 2024. That is worth planning for, since a furnace or heat pump that cannot run without power leaves the house cold at the worst time.
- 9 months
- September through May, your system heats
- 1 months
- July through July, it cools
- 12°F
- the average winter night it heats against
- 77°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
New Hampshire has no state license for HVAC contractors.
There is no state board behind this job and no registration list either. New Hampshire does not test HVAC contractors, does not record who is in business, and does not stand behind the work in any way. Whatever protection exists here comes from somewhere else entirely.
For a heating and cooling installation, that protection is the permit. In most cities and towns in Carroll County, putting in a new furnace, air conditioner or heat pump needs a permit from the local building office, and the completed work gets inspected before it is signed off. That inspection is what checks the gas connections, the wiring and the refrigerant lines, not a state license, because there isn't one here.
Source: New Hampshire General Court
- When should I replace my HVAC system?
- Replace it when repairs get frequent, the equipment is old, or it can no longer keep up on the coldest or hottest days. A furnace nearing the end of its working life is more likely to fail in the middle of winter, and with lows here averaging 12°F, that's not the time to find out. If a repair costs a large share of what a new system would, that's usually the sign to stop patching it. A contractor can look at the condition of your equipment and tell you whether repair still makes sense.
- Should I replace my furnace and air conditioner at the same time?
- If they're close in age, replacing both at once is usually the better choice. Furnaces and air conditioners installed together are matched to work as a system, and pairing an old unit with a new one can mean the new one never runs the way it's rated to. Homes here need heat from September through May and cooling through the summer, so both units see regular use over the year. A contractor can look at the age and condition of each one and tell you whether one can wait.
- What happens during an HVAC installation?
- A contractor removes the old furnace or air conditioner, sets the new equipment in place, and connects it to your ductwork, gas line or refrigerant lines, and electrical supply. They check that the ducts are sized right for the new unit and seal any leaks they find. Once it's running, they test it to confirm it heats or cools correctly and reaches the temperature it's set for. In most cities and counties here, this work needs a permit from the local building office and an inspection when it's done.