AC Installation in Portland & Southern Maine

Most Maine homes were built without ductwork, which rules out the traditional central-air playbook — and that is fine, because ductless is usually the better answer here anyway. A cold-climate heat pump gives you high-efficiency cooling in July and offsets your oil or propane bill from October through April, so the same investment works all twelve months. For homes that only struggle in two or three rooms, single-zone mini-splits cool exactly where you need it without conditioning the whole house.

Window units are the comparison everyone makes, and honestly: a $300 window unit is cheaper up front. But mini-splits cool far more efficiently, run drastically quieter, dehumidify properly, do not block a window or invite break-ins, and add heating value. If a window unit genuinely serves your need, we will say so — we would rather tell you the truth than sell you a system you do not need.

Maine summer humidity is half the comfort problem, and an oversized air conditioner makes it worse: it blasts the room to temperature and shuts off before it has run long enough to wring moisture out of the air, leaving you cold and clammy at the same time. An undersized unit runs flat-out through every heat wave and never catches up. We size from a real load calculation — window area, orientation, insulation, occupancy — so the system runs long, steady, efficient cycles that control both temperature and humidity.