
Furnace Repair in South Portland, Maine
Same-Week Service · All Fuel Types · Honest Diagnostics
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- Licensed & insured
- Since 2019
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Furnace Repair for South Portland Homeowners

When South Portland homeowners need furnace repair, Aces Highlands is the local team to call. We are based at 508 Riverside St Unit 1 in Portland — a short drive from South Portland in Cumberland County — so we respond quickly and know the homes, the weather, and the codes in your area.
A broken furnace in Maine winter is an emergency. Aces Highlands provides fast, accurate furnace repair with honest diagnostics — we fix what actually needs fixing and nothing more.
Common furnace problems include no heat, blower issues, ignition failures, strange noises, short-cycling, and thermostat malfunctions. Our technicians can quickly identify the root cause and get your heat back on.
We repair oil, propane, and natural gas furnaces from all major manufacturers. We carry common parts like ignitors, flame sensors, blower motors, and control boards to complete most repairs in a single visit. Regular furnace maintenance can prevent many of these common issues.
If your furnace is at the end of its life and repair costs do not make sense, we will tell you honestly and help you evaluate replacement options. We never pressure you into a decision.
Why South Portland Calls Aces Highlands
- Based just outside South Portland and out on Cumberland County calls every day
- Pricing you see up front and a diagnosis you can trust — never a sales pitch
- Scheduling that moves quickly, because a home without heat or water cannot wait
- Properly licensed and covered by insurance; Google reviewers back up the work
South Portland Homes and What They Need
South Portland's housing is younger than Portland's but still old: census estimates put the median home at 1968, about a quarter of units date from before 1940, and roughly six in ten were built before 1980. A noticeable bump in the 1940s reflects the wartime shipyard years already noted on this page. About half of homes are single detached houses and about a quarter of units are in buildings of five or more apartments, and close to six in ten households own. The older grid neighborhoods such as Ferry Village, Knightville and Meetinghouse Hill hold modest capes and two-story houses on small lots, with later subdivisions filling in the rest of the city. Houses from the 1940s and 1950s can still have small 60- or 100-amp services, ungrounded circuits and galvanized supply lines, so plumbing work in a South Portland cape often turns up aging pipe once walls are opened.
Heating and Cooling in South Portland
Heating fuel in South Portland is close to a three-way split. Census estimates show about 38 percent of occupied homes on fuel oil or kerosene, about 34 percent on utility gas and about 18 percent on electricity, with bottled propane near 5 percent. Unitil's Northern Utilities serves the city, so gas is available on many streets but not all. The whole city sits on Casco Bay and the Fore River, and the Jetport runway is inside city limits, so the official Portland weather record is effectively local: January lows average in the mid-teens and nights at or below zero come about ten times a winter. Wind off the water drives heat loss in older, loosely built houses. Many owners of oil-fired homes are adding ductless mini-splits in South Portland to cut oil use while keeping the existing system for the coldest stretches.

Getting to Know South Portland
During World War II, South Portland's two shipyards built 266 cargo ships in just four years — 236 American Liberty ships plus 30 "Ocean" class vessels for Britain — with a workforce of roughly 30,000 that included thousands of women welders. The Liberty Ship Memorial near Bug Light Park marks the spot today.
That wartime boom is why South Portland has so much solid mid-century housing — homes built for shipyard workers and their families. Those same houses are now prime candidates for modern heat pumps, updated panels, and new water heaters, and we work in them constantly.
Local & Independent — Not a Franchise
Aces Highlands is a locally owned Portland, Maine company serving South Portland — not a national franchise. Every technician is paid to solve the problem in front of them, not to hit an upsell quota. We do the work you called us for, do it right, and earn the next call. That is the whole business model.
How a Furnace Works
- Return air — pulled in through the filter
- Blower — pushes air across the heat exchanger
- Burners — ignite to heat the exchanger
- Heat exchanger — transfers heat without mixing combustion gases
- Supply air — warm air delivered to the home
Homeowner Guide
Furnace Won't Heat? Here's How We Narrow It Down
Furnace calls almost always start the same way — "it's not blowing warm air" — but the actual cause splits into a handful of distinct failure points.
Read the Full GuideMore Furnace Repair & Installation
Furnace Repair is part of our full furnace repair & installation lineup. Explore the details or browse everything we offer in South Portland.
Furnace Repair DetailsAll Services in South PortlandService Info
Service Area
South Portland, Cumberland County, ME
Phone
(207) 670-8616Hours
Open 24 hours, 7 days a week
Codes & Permits for Furnace Repair in South Portland
In South Portland, plumbing permits come from the Local Plumbing Inspector at the Code Enforcement Office, City of South Portland (829 Sawyer Street, South Portland, ME 04106, 207-767-7603). With 26,498 residents, South Portland is required to enforce the Maine Uniform Building and Energy Code (MUBEC). South Portland sits on Portland Harbor and overlooks Casco Bay with a working waterfront, giving coastal/salt-air exposure (Wikipedia).
- Installing, repairing, or servicing a propane or natural gas furnace requires a Maine Fuel Board Propane and Natural Gas Technician license, with separate authorizations depending on BTU size and scope of work. mainelegislature.org
- Propane and natural gas equipment and dispensing installations in Maine must comply with NFPA 54 (National Fuel Gas Code) and NFPA 58 (Liquefied Petroleum Gas Code). maine.gov
- Maine's adopted 2021 International Mechanical Code (part of MUBEC) sets installation, clearance, and venting requirements for furnaces in municipalities that enforce the code. maine.gov
How Aces Highlands Handles Furnace Repair in South Portland
- Northern Utilities, d/b/a Unitil has mains through parts of South Portland, so a gas-fired swap is on the table wherever a line already reaches the street; off that grid the choice is oil, propane or a heat pump.
- With 38% of South Portland on heating oil, most furnace repair calls here follow NFPA 31 (oil), NFPA 54/58 (gas/propane) or NFPA 211 (venting), depending on what's already installed.
- We don't close out a furnace repair without confirming CO detectors are installed near sleeping areas, which Maine requires wherever the heat comes from burning fuel.
South Portland's municipal building on Cottage Road in the Meetinghouse Hill 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
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.
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.
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.
Furnace Repair FAQs
My furnace stopped working — what should I check first?
Check the thermostat batteries and settings, the furnace power switch (looks like a light switch on or near the unit), the breaker, and the filter — a fully clogged filter can trip the furnace’s safety limit. On oil units, confirm you have fuel and press the reset button only once. If none of that works, call us.
Why does my furnace turn on and off every few minutes?
Short-cycling is most often a clogged filter causing overheating, a dirty flame sensor dropping the flame signal, or an oversized furnace reaching temperature too fast. It wastes fuel and wears components, so it is worth fixing promptly.
How much does furnace repair cost?
Common repairs — flame sensors, ignitors, capacitors — typically run in the low hundreds. Blower motors and control boards cost more. We quote the exact price after diagnosis and before any repair, so there are no surprises on the invoice.
When is a furnace not worth repairing?
When it is past 15 years and facing a major repair like a heat exchanger, blower motor, or control board, replacement usually wins the math — especially counting the fuel savings of a modern high-efficiency unit. A cracked heat exchanger on an older furnace is almost always a replacement, for safety reasons.
Do you repair oil furnaces?
Yes — oil, propane, and natural gas. Our team holds a Maine Master Oil Burner license, so oil-fired equipment is core work for us, not an afterthought.
More Services in South Portland
Aces Highlands handles HVAC, plumbing, and electrical for South Portland homeowners. Here is more of what we do nearby.
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Tank Water Heaters in South PortlandNeed Furnace Repair in South Portland?
Call our South Portland team or get a free quote. We will get you scheduled and take care of it right the first time.
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