AC Installation in Bath, ME
A new air conditioner in Bath will run from July through August every year. Tell us about the house, and a licensed contractor who covers Sagadahoc County will get in touch.
Tell us about the job
It takes about a minute.
Bath doesn't ask much of an air conditioner, but it still has to work
Cooling season here runs July and August, two months out of the year. Summer afternoons average 76 degrees, which is mild compared to most of the country. A new system in Bath spends most of the year sitting idle, then has to start up reliably when those two months arrive.
Any central air conditioner installed new has to meet a federal minimum of 13.4 SEER2. That floor is the same everywhere, so the difference in a place like this comes down to sizing the unit to a short, mild season rather than a long, hot one.
- 2 months
- July through August, your air conditioner is on duty
- 76°F
- the average summer afternoon it cools against
- 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 Sagadahoc County home, from EIA household energy data, Maine fuel prices and NOAA climate normals. Your home will differ.
- What size air conditioner does my house need?
- The right size comes from a load calculation, not a rule of thumb based on square footage. A contractor looks at your windows, insulation, ceiling height, and how much sun your walls get before landing on a number. With summers here running short, just July and August, an oversized unit is the bigger risk since it will cool the air fast without running long enough to pull the humidity down.
- Should I replace the whole system or just the outdoor unit?
- If your indoor coil and outdoor unit are different ages or different efficiency levels, replacing just the outdoor unit usually causes problems. The two are matched at the factory to work together, and pairing an old coil with a new condenser can mean poor cooling and a shorter life for the new equipment. A contractor can check the age and condition of both and tell you whether the coil is worth keeping.
- Do HVAC contractors in Bath need a state license to work on my home?
- Yes. Anyone installing or servicing central air conditioning in a home needs a state HVAC license. Ask to see the license number before work starts, and check that it's active if you want to confirm it yourself.