Maine HVAC Service
An outdoor air conditioning condenser unit positioned beside a blue-sided house at sunset.

AC Installation in Waldoboro, ME

A new air conditioner in Waldoboro will run from July through August every year. Tell us about the house, and a licensed contractor who covers Lincoln 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 on a concrete pad next to a blue-sided house, surrounded by green shrubs and flowering hydrangeas at sunset.

A short cooling season, but the storms still come

Waldoboro only asks for air conditioning in July and August, two months out of the year. Summer afternoons average 75°F, which is mild compared to a lot of the country. That short season means a new system here does not have to fight extreme heat, but it still needs to be sized and installed right for the days that do get hot.

Lincoln County has seen 19 damaging wind events and 3 hail events over the past ten years, with hailstones up to an inch. An outdoor condenser sits outside through all of that, so how it is installed and protected matters. Any new central air conditioner installed today also has to meet the federal efficiency minimum of 13.4 SEER2.

2 months
July through August, your air conditioner is on duty
75°F
the average summer afternoon it cools against
3 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 grey illustration of a cutaway single-story house showing interior rooms, ceiling ductwork connected to an indoor air handler, and an outdoor condenser unit linked by lines outside the wall.
Your air conditioner works hardest from July through August.

NOAA nClimDiv, 1991–2020 normals

Aerial view of a square outdoor air conditioning condenser unit on a concrete pad beside a house wall with a sliding glass door.

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 Lincoln 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, how much shade your house gets, your insulation, and how many windows face the sun. A contractor works this out with a load calculation rather than a rule of thumb, because a unit that's too big will cool the air fast without running long enough to pull the moisture out, and one that's too small will run constantly without keeping up. Summer highs here only average around 75°F and cooling season is just July and August, so an oversized unit is often the bigger risk in this area.
Should I replace the whole system or just the outdoor unit?
In most cases you replace the outdoor unit and the indoor coil together. The two are matched to work at a specific efficiency and capacity, and pairing a new outdoor unit with an old coil can lose you much of the efficiency you paid for, sometimes voiding the warranty too. A contractor can check whether your existing coil and ductwork will work with a new outdoor unit, but if the system is old, replacing just one part rarely makes sense.
Do HVAC contractors in Waldoboro need a state license to work on my home?
Ask to see a license before any work starts. A licensed contractor has had to meet training and testing requirements to earn it, which is worth confirming before someone starts working on your system.
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