Maine HVAC Service
An outdoor air conditioning condenser unit installed beside the exterior wall of a blue vinyl-sided house at sunset.

AC Installation in Ellsworth, ME

A new air conditioner in Ellsworth will run from July through July every year. Tell us about the house, and a licensed contractor who covers Hancock County will get in touch.

Tell us about the job

It takes about a minute.

Step 1 of 3: Equipment
An outdoor air conditioning condenser unit positioned beside a blue-sided house at sunset.

Ellsworth doesn't ask much of an air conditioner, until a storm does

Summer afternoons here average 76°F, and July is really the only month a house needs cooling. That is a light load compared to most of the country. A properly sized system will spend most of its life barely working to keep up.

The bigger test is what comes through in a storm. Hancock County has logged 75 damaging wind events and 9 hail events over the past ten years, with hail up to 1.75 inches. The outdoor unit sits outside through all of it, so where it's placed and how it's mounted matter as much as the size of the system. Any new install also has to meet the federal minimum of 13.4 SEER2, the efficiency floor for central air built since 2023.

1 months
July through July, your air conditioner is on duty
76°F
the average summer afternoon it cools against
9 hail events
in ten years, and hail bends the fins on outdoor coils
13.4 SEER2
the federal minimum any new unit must meet
Isometric cutaway illustration of a single-story house with a dark shingled roof, showing interior rooms with ductwork and an indoor air handler connected to an outdoor condenser unit beside the building.
Your air conditioner works hardest from July through July.

NOAA nClimDiv, 1991–2020 normals

An outdoor air conditioning condenser unit positioned on a concrete pad next to a blue-sided house, surrounded by green shrubs and flowering hydrangeas at sunset.

Going above the federal minimum saves little here, about $20 a year.

  • A higher-efficiency unit$140 a year
  • A new unit at the federal minimum, 13.4 SEER2$160 a year

Estimates for a typical Hancock 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 depends on your square footage, insulation, window placement, and how much shade the house gets, not just a rule of thumb per square foot. A unit that's too big cools the air fast but shuts off before it pulls the moisture out, so the house feels clammy. A contractor works this out with a load calculation that looks at your actual walls, windows, and layout, not a guess based on the old unit's size.
Should I replace the whole system or just the outdoor unit?
If the indoor and outdoor units are close in age, replacing both usually makes more sense than replacing one. The two are matched to work together, and pairing a new outdoor unit with an old indoor coil can mean the system never runs at the efficiency either piece was built for. A contractor can check the age and condition of both and tell you whether the indoor coil is worth keeping.
Do HVAC contractors in Ellsworth need a state license to work on my home?
Yes, HVAC contractors need a state license to install or service central air conditioning systems. Ask to see the license number before work starts, and check that it's current. This matters more with a full system install, since the work has to meet code and pass inspection.
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