We at One Stop Home Repair calculate the cooling load of your Orono home before recommending equipment, because a system chosen by square footage alone is usually too large, and an oversized system cools the air without removing the humidity.
One Stop Home Repair is a home services contractor based at 90 Stillwater Avenue in Orono, and by the company’s own account, we have served the Greater Bangor area since 1980. We install cooling systems in Orono, Bangor, Brewer, Hampden, Belfast, Bucksport, Ellsworth, Lincoln, Pittsfield, and Dover-Foxcroft.
Orono’s housing stock shapes almost every cooling installation we do here. A large share of homes here predate residential air conditioning entirely, so they have no ductwork and no room to add it without losing ceiling height. That makes a cooling quote a question about how to distribute cooling rather than which unit to buy.
We are licensed and insured, and our cooling installations are performed by technicians who hold EPA refrigerant certification. One Stop Home Repair is listed as an Efficiency Maine registered vendor. You get a written scope and a price before installation begins.
Replacement is usually the better decision when:
If you are not sure which side of that line you are on, we diagnose the system first and quote AC repair alongside replacement.
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Sizing starts with a load calculation, not a rule of thumb. A load calculation is a room-by-room accounting of how much heat a house gains, based on its insulation, window area and orientation, air leakage, ceiling heights, and the local design temperature. The industry method is ACCA Manual J, and it produces a capacity figure in British thermal units that equipment selection has to match. That number matters more here than most people expect: Maine’s design cooling temperature is far lower than the South’s, so the correct system is often smaller than a homeowner assumes. An oversized one shuts off before it has run long enough to remove moisture.
On installation day, we mount the equipment, pressure test the line set, evacuate it to remove moisture and air, weigh in the manufacturer’s specified charge, and commission the system. Commissioning means verifying the charge with superheat and subcooling readings and confirming airflow before we call the job finished.
Federal minimum efficiency standards for cooling equipment are set by region, and Maine sits in the national baseline rather than either higher regional tier. Under the Department of Energy standards at 10 CFR 430.32, split-system central air conditioners under 45,000 Btu per hour carry a national minimum of SEER2 13.4, while the Southeast and Southwest regions carry a higher regional minimum of 14.3. Maine is named in neither region, so the national figure is the floor here.
SEER2 replaced SEER under a revised DOE test procedure that measures equipment against higher external static pressure, closer to real duct conditions. The two are not interchangeable, so a SEER rating on an older brochure is not comparable to a SEER2 rating today. We give you the AHRI certified rating for the equipment we quote, and confirm incentive eligibility at quote time.
The correct size comes from a load calculation of your specific house, not from its square footage. A load calculation accounts for insulation, window area and orientation, air leakage, ceiling height, and the local design temperature, and produces a figure in British thermal units. In Maine, the correct system is often smaller than homeowners expect.
Yes, and most older homes in the Orono area are in exactly that position. A ductless mini-split delivers cooling through indoor heads mounted in the rooms themselves, connected to an outdoor unit by a refrigerant line set that needs only a small wall penetration. A multi-zone system runs several heads from one outdoor unit.
A heat pump is an air conditioner that can also run in reverse. In cooling mode, it moves heat out of the house exactly as an air conditioner does, and in heating mode it moves heat in. That is why a heat pump installation is a cooling installation, and why most new cooling equipment in Maine homes is a heat pump.
A single-zone ductless installation is commonly completed in a day, while multi-zone systems, ducted installations, and jobs requiring electrical work take longer. The variables are the number of indoor heads, the line set runs, and whether the panel has capacity for the new circuit. We provide a schedule with the written scope.
Start with the federal floor and then decide how much above it is worth paying for. Split-system central air conditioners under 45,000 Btu per hour must meet a national minimum of SEER2 13.4 in Maine. Because Maine’s cooling season is short, the payback on a high-efficiency tier is driven more by heating use than cooling use when the equipment is a heat pump.
I’ve relied on Howard and the folks at One Stop for decades at three different locations in Orono. That probably says it all in terms of customer satisfaction.
— Karla Harkins
I have zero plumbing experience and needed a bunch of work done to a shower in my home. Upon first search on Google I found One Stop Home Repair.
— Josh Whinery
The service I got was prompt and they are very nice people to deal with. My heat pump went within a day, they put a new one in for me. Their plumber Eric did a super job.
— Gena Houston
The December 18 storm caused a 3000 pound branch to fall on two cars and the garage as well as tearing shingles from the house. I called them at 8 AM and they had a crew there at 10 AM.
— John Johnston
We offer financing options through a trusted financing partner to help make larger projects more manageable. Financing may be available for generator installations, remodeling projects, and other major home improvements, subject to credit approval.
We are based in Orono and proudly serve homeowners throughout the Greater Bangor area, including:
