
Ductless Mini-Splits in Westbrook, Maine
No Ductwork Required · Zone-by-Zone Control · Whisper-Quiet Operation
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- Since 2019
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Ductless Mini-Splits for Westbrook Homeowners

Westbrook homeowners call Aces Highlands for ductless mini-splits because we are close by, based at 508 Riverside St Unit 1 in Portland, and out on Cumberland County roads every day — we know this area's housing, weather and permit process cold.
Ductless mini-split systems provide efficient heating and cooling without the need for ductwork. Aces Highlands installs single and multi-zone mini-split systems for homes that need targeted comfort in specific rooms or areas.
Mini-splits are ideal for additions, finished basements, garages, bedrooms over garages, and older homes without existing ductwork. Each indoor unit operates independently, giving you zone-by-zone temperature control and eliminating the energy waste of heating or cooling unoccupied rooms. If your home also needs new wiring to support the installation, we handle that too.
We install wall-mounted, ceiling cassette, and floor-mounted indoor units depending on your space and preferences. Each installation includes proper sizing, clean line routing, and thorough testing to ensure optimal performance.
Modern ductless systems operate at whisper-quiet levels and include features like programmable schedules, Wi-Fi control, and advanced filtration. We help you choose the right configuration for your home and budget. Explore our financing options to make your mini-split installation affordable.
Why Westbrook Calls Aces Highlands
- Close enough to Westbrook for a fast response, local enough to know the town
- Honest diagnostics and transparent pricing — no upselling
- Same-week scheduling for most service calls
- Licensed and insured; Google reviewers back up the work
Westbrook Homes and What They Need
Westbrook's housing splits cleanly into two eras. Census estimates put the median home at 1975: about a quarter of units date from before 1940, the old mill-town core along the Presumpscot, while roughly a quarter were built since 2000 as the city grew faster than any other in Maine between 2010 and 2020. Fewer than half of homes are single detached houses, about a fifth of units are in buildings with five or more apartments, and about 6 percent are mobile homes, a higher share than most nearby towns. Neighborhoods such as Cumberland Mills, Frenchtown and Deer Hill carry older two- and multi-family houses, while newer apartments and subdivisions fill in toward Prides Corner and the edges of town. That older half often has aging drain stacks and supply piping, and clearing old drain lines is a routine part of keeping it working.
Heating and Cooling in Westbrook
Oil still heats about half of Westbrook: census estimates show roughly 49 percent of occupied homes on fuel oil or kerosene, about 19 percent on utility gas, about 17 percent on electricity and about 11 percent on bottled propane. Unitil's Northern Utilities serves the city, so gas is an option on many streets near downtown and the main roads. Westbrook sits a few miles inland of the harbor, so winter nights run a touch colder than on the Portland peninsula. Older homes here were built around oil-fired boilers or furnaces and many have no central cooling at all. A common upgrade is adding central air conditioning through a heat pump, which also takes a large share of the heating load off the oil burner.

Getting to Know Westbrook
In January 2019, a giant spinning disk of ice roughly 300 feet across formed on the Presumpscot River in downtown Westbrook and made headlines around the world — news crews from as far away as Europe and Japan covered it, and it has reappeared in later winters. Westbrook's identity as a mill town goes back much further: the paper mill S.D. Warren bought in 1854 still operates today under Sappi.
Generations of mill workers built Westbrook's neighborhoods, which is why so many local homes are sturdy older houses with aging mechanicals. Panel upgrades, boiler swaps, and heat pump retrofits in that housing stock are some of our most common Westbrook calls.
Local & Independent — Not a Franchise
Aces Highlands answers to Westbrook homeowners directly, not a franchise office somewhere else in the country. Our technicians are not commissioned salespeople and nobody here is required to upsell you anything. We do the work you called us for, do it right, and earn the next call. That is the whole business model.
How a Ductless Mini-Split Works
- Outdoor condenser — compressor and fan reject or absorb heat
- Line set — refrigerant lines run through the wall sleeve
- Wall sleeve — one small penetration, no ductwork needed
- Indoor wall head — coil and blower
- Warm air — directed by adjustable louvers
Homeowner Guide
Ductless Mini-Splits: Zoning, Placement & Multi-Unit Systems
A ductless mini-split solves a specific problem — heating and cooling a space with no existing ductwork — and it does it with more control over individual rooms than almost any ducted system can offer.
Read the Full GuideMore Heat Pumps & Mini-Splits
Ductless Mini-Splits is part of our full heat pumps & mini-splits lineup. Explore the details or browse everything we offer in Westbrook.
Ductless Mini-Splits DetailsAll Services in WestbrookService Info
Codes & Permits for Ductless Mini-Splits in Westbrook
In Westbrook, plumbing permits come from the Local Plumbing Inspector at the City of Westbrook Code Enforcement Department (2 York Street, Westbrook, ME 04092, 207-854-0638). With 20,400 residents, Westbrook is required to enforce the Maine Uniform Building and Energy Code (MUBEC). The Presumpscot River runs through downtown Westbrook over Saccarappa Falls and Congin Falls; the historic Cumberland Mills Historic District (former S.D. Warren/Sappi paper mill complex) sits along the river, which can bring historic-district and river-corridor considerations into permitting near downtown.
- Anyone who connects or disconnects gauges or adds/removes refrigerant on a heat pump or air conditioner must hold EPA Section 608 technician certification; the credential does not expire once earned. epa.gov
- The electrical circuit that feeds a new heat pump or AC condenser needs an electrical permit, issued by the Electricians' Examining Board or the town's own electrical inspector, before the wiring is installed or altered. maine.gov
- Efficiency Maine offers rebates of up to $9,000 on qualifying heat pumps, but the equipment must be installed by an Efficiency Maine Residential Registered Vendor for the homeowner to receive the rebate. efficiencymaine.com
How Aces Highlands Handles Ductless Mini-Splits in Westbrook
- Because roughly 49% of Westbrook homes are already on heating oil, a ductless mini-splits usually means deciding how much of the heating load the new equipment should carry, not ripping out what's there.
- Every outdoor unit we set gets its own permitted circuit before it's wired in, and any refrigerant work is done under our EPA Section 608 certification.
- Efficiency Maine rebates only pay out when a Residential Registered Vendor did the install, so we confirm eligibility with you up front — you can check any installer's registration yourself before signing anything.
The city's municipal building on York Street in Westbrook's Cumberland Mills area.
Street View © Google
Why homeowners choose Aces Highlands
We show up when we say
We show up on time, as promised, and complete the work with clean professionalism.
Pricing upfront, before work starts
Honest diagnostics and a clear price before any work begins — no surprises on the invoice.
Done right the first time
HVAC, plumbing and electrical done right the first time — backed by our workmanship guarantee and 100% satisfaction guarantee.
Locally owned in Portland, Maine · Serving Greater Portland and Southern Maine since 2019
What HVAC customers say
Justin Funk
a year ago
We highly recommend Highlands Heating & AC. They are extremely responsive, knowledgeable and do great work. Our boiler stopped working and Elijah was quick to respond after hours on a Friday. He installed a new boiler and heat pump hot water heater.
Tom
14 Aug 2024
He was very friendly. He gave me an honest explanation on why I shouldn't recharge my A/C unit and what he suggested made much more sense. He really took care of everything. He is very professional, always called me with updates. 5 stars is not enough — I give this company 10 stars.
John Walton
5 months ago
I've had three HVAC issues over the past two years. Each time I call, Elija or the office picks up the phone, and my problem is fixed in 24 hrs. Their solutions always feel correct and honest. I cannot recommend them more.
Adam Ayan
10 months ago
Elijah and Highlands Heating & AC were super helpful! Boiler failed over the weekend and Elijah was very responsive and helpful, getting us up and running right away. I would recommend him at HH&AC highly!
Jacqueline Vogeley
2 weeks ago
Great experience! Open, honest and efficient 🙌🏽 Job well done
Susan Donegan
3 months ago
We have called Samuel for our electrical needs over the last few years and have always been impressed with professional and courteous attitude — installing extra outlets, installing new lights and ceiling fans, our whole house generator, charger for the electric car, even the hot tub!!! His price was fair, and never disappointed when work was completed.
Ductless Mini-Splits FAQs
Can a mini-split heat a room all winter in Maine?
Yes — cold-climate mini-splits are rated to keep producing heat at -13°F and below, and Maine homes run tens of thousands of them through every winter. Correct sizing and mounting the outdoor unit above snow line are what make the difference.
How much does a ductless mini-split cost installed?
A quality single-zone installation typically runs $4,000–$6,000. Multi-zone systems cost more depending on the number of indoor heads. Efficiency Maine rebates on qualifying systems reduce the net cost, and we quote firm prices up front.
Are mini-splits noisy?
No — modern indoor heads run at whisper-quiet levels on low fan speeds, quieter than a refrigerator, and the compressor noise stays outside. If a mini-split is loud, something is wrong with it.
Do mini-splits need maintenance?
Yes: rinse the indoor filters every few weeks during heavy use, and have the system professionally cleaned and checked once a year — coils, blower wheel, refrigerant charge, condensate drain, and defrost operation.
How long does installation take?
A typical single-zone installation is finished in one day, including electrical connection and full commissioning. Multi-zone projects usually take two to three days.
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Radiant Floor Heating in WestbrookNeed Ductless Mini-Splits in Westbrook?
Call our Westbrook team or get a free quote. We will get you scheduled and take care of it right the first time.
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