
Furnace Installation in Falmouth, Maine
High-Efficiency Models · Proper Sizing · Ductwork Inspection Included
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- Since 2019
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Furnace Installation for Falmouth Homeowners

Falmouth sits in Cumberland County, part of the territory Aces Highlands covers out of 508 Riverside St Unit 1 in Portland every week — so a call for furnace installation gets a technician who already knows the local housing and codes, not a first-timer.
When it is time for a new furnace, Aces Highlands helps you choose and install a high-efficiency system that delivers dependable heat and lower energy costs. Every installation includes proper sizing, clean ductwork connections, and thorough testing.
We install oil, propane, and natural gas furnaces from trusted brands. Modern high-efficiency furnaces can operate at 95% efficiency or higher, meaning more of your fuel dollar goes toward heating your home instead of going up the chimney. You might also want to consider a heat pump system for even greater efficiency and year-round comfort.
Proper sizing is critical for furnace performance. An oversized furnace short-cycles and creates temperature swings, while an undersized unit runs constantly without reaching comfortable temperatures. We perform a load calculation to determine the right size for your home.
Our furnace installations include removal of the old unit, new furnace installation, ductwork inspection and connection, thermostat setup, and a complete system test. Older homes may also benefit from an electrical panel upgrade to support the new system. We make sure everything is working perfectly before we leave.
Why Falmouth Calls Aces Highlands
- Cumberland County is our backyard, and Falmouth is on that route every week
- Honest diagnostics and transparent pricing — no upselling
- Most calls get on the schedule the same week you reach out
- Fully licensed, fully insured, and reviewed by real customers on Google
Falmouth Homes and What They Need
Falmouth's housing is younger than most of Greater Portland. Census estimates put the median home here at 1986, and roughly 14 percent of homes have been built since 2010, many of them in newer subdivisions. The older layer is still real: about 14 percent of homes predate 1940 and about four in ten predate 1980, from Falmouth Foreside along Route 88 to West Falmouth Corner and Highland Lake. Around 80 percent of homes are single-family detached houses, and most are owner-occupied. In practice that means two very different kinds of job in one town: a newer colonial with PEX, a mechanical room and room for ductwork, and a Foreside house with copper or galvanized supply lines, tired shutoff valves and pinhole leaks that need tracing behind finished walls.
Heating and Cooling in Falmouth
Falmouth heats with a wider mix than most Maine towns. Census estimates show fuel oil or kerosene in roughly 43 percent of occupied homes, bottled propane in about 21 percent, utility natural gas in about 19 percent, electricity in about 11 percent and wood in about 5 percent. Gas is available because both Unitil and Summit Natural Gas of Maine run mains in town; Summit built into Falmouth, Cumberland and Yarmouth after the three towns chose it through a joint request for proposals, beginning in 2013. Homes near the bay see slightly milder nights than those out toward West Falmouth and Blackstrap, but both need equipment sized for a real Maine January. For many owners the choice is whether to keep an oil or propane boiler as backup or move most of the load to a cold-climate heat pump system, which also adds cooling.

Getting to Know Falmouth
The original town of Falmouth once encompassed what are now Portland, South Portland, Westbrook, and Cape Elizabeth — those communities were all carved out of it over time. Just offshore, Mackworth Island was Governor Percival Baxter's family retreat before he deeded it to the State of Maine in 1943; today it is famous for the "fairy houses" visitors build in its woods and for Baxter's stone-walled memorial to his Irish Setters.
Modern Falmouth is known for well-kept homes with high-end finishes — the kind of properties where clean line-set routing, tidy penetrations, and spotless job sites matter. That is how we work.
Local & Independent — Not a Franchise
We are an independent, Portland-based company, not a franchise chain routing your Falmouth job to a call center. Technicians are not on commission, so the recommendation you get is the one your house actually needs. We show up, fix the actual problem, and let the work speak for itself.
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 Installation: Sizing, Ductwork & Venting
A furnace replacement is a chance to fix problems the original installation may have never addressed — most of which live in the ductwork, not the furnace cabinet.
Read the Full GuideMore Furnace Repair & Installation
Furnace Installation is part of our full furnace repair & installation lineup. Explore the details or browse everything we offer in Falmouth.
Furnace Installation DetailsAll Services in FalmouthService Info
Codes & Permits for Furnace Installation in Falmouth
In Falmouth, plumbing permits come from the Local Plumbing Inspector at the Falmouth Code Enforcement Division (271 Falmouth Road, Falmouth, ME 04105, 207-699-5310). With 12,444 residents, Falmouth is required to enforce the Maine Uniform Building and Energy Code (MUBEC). Falmouth borders Casco Bay and the Gulf of Maine, with 6.96 of its 36.34 square miles being water (Wikipedia).
- Oil-fired furnaces fall under the same Maine Fuel Board Oil Burner Technician licensing (Apprentice/Journeyman/Master) as oil boilers. maine.gov
- 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
How Aces Highlands Handles Furnace Installation in Falmouth
- Where Summit Natural Gas of Maine serves the street in Falmouth, gas equipment is usually the simplest furnace installation option; elsewhere we quote oil, propane and heat-pump alternatives side by side.
- About 43% of Falmouth homes heat with heating oil today. Oil equipment is installed to NFPA 31, gas and propane to NFPA 54/58, and every vent or chimney tie-in to NFPA 211.
- Once a furnace installation is finished, we check that carbon monoxide detectors are actually present near the bedrooms — Maine law requires them in any home heated by fuel-burning equipment.
The town's public library near Falmouth Village, off Route 1.
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!
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.
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.
Furnace Installation FAQs
How much does a new furnace cost installed?
Most residential furnace replacements run roughly $5,000–$9,000 installed depending on fuel type, efficiency class, and ductwork condition. We provide a firm written quote before ordering equipment, and financing is available.
How long does furnace installation take?
A straightforward replacement is completed in one day, with heat restored the same evening. Jobs involving significant ductwork, venting changes, or fuel conversion may take a second day.
What size furnace does my home need?
The size should come from a heat-loss calculation of your actual home — insulation, windows, air sealing, square footage — not from copying the old unit’s label. Oversized furnaces short-cycle and create temperature swings; undersized ones run constantly and still fall behind.
Should I replace my furnace with a heat pump instead?
Worth considering. Cold-climate heat pumps heat efficiently through most of a Maine winter and add air conditioning, and Efficiency Maine rebates may apply. Many homes pair a heat pump with a furnace as backup. We install both, so we can price the options against each other honestly.
Do you remove the old furnace?
Yes — removal and disposal of the old unit is included in every installation, along with a full cleanup of the work area.
More Services in Falmouth
Aces Highlands handles HVAC, plumbing, and electrical for Falmouth homeowners. Here is more of what we do nearby.
Furnace Repair in Falmouth
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Sewer Line Repair & Replacement in FalmouthFurnace Installation in Nearby Towns
Need Furnace Installation in Falmouth?
Call our Falmouth team or get a free quote. We will get you scheduled and take care of it right the first time.
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