
Ductless Mini-Splits in Hallowell, Maine
No Ductwork Required · Zone-by-Zone Control · Whisper-Quiet Operation
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- Licensed & insured
- Since 2019
Efficiency Maine Registered Vendor- 100% Satisfaction Guarantee
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Ductless Mini-Splits for Hallowell Homeowners

Aces Highlands handles ductless mini-splits for homeowners throughout Hallowell. We work out of 508 Riverside St Unit 1 in Portland, a short drive into Kennebec County, so response times stay quick and every job benefits from knowing the local housing stock and code requirements.
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 Hallowell Calls Aces Highlands
- A Kennebec County crew that already knows Hallowell's streets and housing stock
- No scare tactics — just an accurate diagnosis and a price that holds
- Scheduling that moves quickly, because a home without heat or water cannot wait
- Licensed and insured, with a track record of Google reviews from real jobs
Hallowell Homes and What They Need
Hallowell's median home was built in 1938, with 57 percent of the city's housing dating before 1940 and 64 percent before 1960 -- the oldest stock of any of the four Kennebec towns Aces serves. Much of downtown and the residential blocks around it fall inside the Hallowell Historic District, listed on the National Register since 1970 and covering roughly 450 buildings, about half of them built before 1865. A rewiring job in that district usually means working carefully around original plaster and trim while still bringing the electrical up to code.
Heating and Cooling in Hallowell
About 42 percent of Hallowell households heat mainly with fuel oil, 17 percent with utility gas from Summit Natural Gas of Maine, and 14 percent with electricity, per Census estimates -- a more mixed fuel picture than some of its Kennebec neighbors. That mix means we are regularly quoting side-by-side comparisons between keeping an oil boiler running and switching part of the load to a heat pump.

Getting to Know Hallowell
Hallowell's first European settler, Deacon Pease Clark, arrived from Massachusetts in 1762, and the city takes its name from Benjamin Hallowell, a Boston merchant and one of the Kennebec Proprietors who backed its early development. Between 1783 and 1901, the city launched roughly 50 ships from its Kennebec wharves, part of an economy that also leaned on granite quarrying and ice exports.
In 1875, Hallowell became home to the Maine Industrial School for Girls, the state's first reform school for girls, which stayed open into the 1970s. Downtown still shows off its 19th-century commercial architecture, anchoring a historic district that gives Hallowell one of the best-preserved old riverfronts on the Kennebec.
Local & Independent — Not a Franchise
Aces Highlands answers to Hallowell 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 Hallowell.
Ductless Mini-Splits DetailsAll Services in HallowellService Info
Codes & Permits for Ductless Mini-Splits in Hallowell
In Hallowell, plumbing permits come from the Local Plumbing Inspector at the Hallowell Code Enforcement Office (1 Winthrop Street, Hallowell, ME 04347, (207) 430-4405 (office) / (207) 446-0316 (cell)). With 2,570 residents, Hallowell is under the 4,000-resident line at which Maine requires a town to enforce MUBEC. Hallowell's downtown and adjacent residential blocks form the Hallowell Historic District, on the National Register of Historic Places since 1970, with roughly 450 buildings (about half built before 1865, mostly 1825-1899) — exterior HVAC unit placement in this area can draw added scrutiny.
- 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 Hallowell
- Because roughly 42% of Hallowell 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.
- We pull the electrical permit for the new circuit before touching the outdoor unit, and refrigerant handling stays inside EPA Section 608 the whole job.
- Because Efficiency Maine ties its rebates to Residential Registered Vendor status, we go over what your project actually qualifies for before you commit a dollar.
A stone Romanesque-style public library on Central Street in Hallowell's historic downtown.
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
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!
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.
Amanda R
2 months ago
I've had an excellent experience working with them for both electrical and HVAC work as I remodel my 1785 home. I highly recommend them.
Ruth Kirkwood
3 months ago
This company is excellent. They quickly and efficiently repaired the kitchen faucet that was loose.
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 HallowellNeed Ductless Mini-Splits in Hallowell?
Call our Hallowell team or get a free quote. We will get you scheduled and take care of it right the first time.
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