AC Installation in Claremont, NH
A new air conditioner in Claremont will run from July through July every year. Tell us about the house, and a licensed contractor who covers Sullivan County will get in touch.
Tell us about the job
It takes about a minute.
One month of real heat, but the storms test the unit year round
Claremont only asks for cooling in July, with afternoons averaging 77°F. That is a short season, so a new air conditioner here spends most of the year sitting idle outside, exposed to whatever the weather brings.
And the weather brings some rough days. Sullivan County has logged 58 damaging wind events and 14 hail storms over the past ten years, with hail up to 1.75 inches recorded. That is what the outdoor unit's cabinet and coil have to hold up against, whether or not the system is running that day. Any new central air conditioner installed now also has to meet the federal minimum of 13.4 SEER2.
- 1 months
- July through July, your air conditioner is on duty
- 77°F
- the average summer afternoon it cools against
- 14 hail events
- in ten years, and hail bends the fins on outdoor coils
- 13.4 SEER2
- the federal minimum any new unit must meet
NOAA nClimDiv, 1991–2020 normals
Going above the federal minimum saves little here, about $20 a year.
Estimates for a typical Sullivan County home, from EIA household energy data, New Hampshire fuel prices and NOAA climate normals. Your home will differ.
New Hampshire has no state license for HVAC contractors.
There is no state record of any kind for HVAC contractors in New Hampshire. No test, no license number, no registration on file anywhere in the state. Whatever a contractor knows about the trade, it is not something the state checked or wrote down.
For an air conditioner installation, the protection that exists here is local. Most cities and counties require a permit before the work starts and an inspection once it is done, and that inspection is what stands between you and a bad installation, not a license number. The building office checking the work is the closest thing to oversight this job gets in New Hampshire.
Source: New Hampshire General Court
- What size air conditioner does my house need?
- The right size depends on your square footage, your insulation, how many windows you have, and which way your house faces, not just a rule of thumb. A contractor works this out with a load calculation, which looks at your whole house rather than guessing from size alone. An undersized unit will run constantly without cooling the house down, and an oversized one cools too fast and shuts off before it pulls the humidity out of the air. With summer afternoons here averaging 77°F, getting the size right matters less for raw power and more for how evenly the house holds temperature.
- Should I replace the whole system or just the outdoor unit?
- In most cases you replace both the outdoor unit and the indoor coil together, not just the outdoor unit alone. New outdoor units use different refrigerant and coil designs than older systems, and matching a new one to an old indoor coil usually means the two run below their rated efficiency, if they work together at all. A contractor can look at the age and condition of your indoor coil and tell you whether it can pair with new equipment. New central air conditioners built since 2023 have to meet a federal minimum of 13.4 SEER2, and that rating only holds when the outdoor unit and indoor coil are matched.
- Do HVAC contractors in Claremont need a state license to work on my home?
- No, New Hampshire has no state license or registration for HVAC contractors. That does not mean there is no paperwork on this job. Installing an air conditioner in most cities and counties requires a permit from the local building office and an inspection once the work is done, so check that the contractor is pulling that permit for you.