
Boiler Installation in Gray, Maine
High-Efficiency Systems · Proper Sizing & Design · Clean Copper Piping
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Boiler Installation for Gray Homeowners

For boiler installation in Gray, homeowners turn to Aces Highlands: a Portland-based crew (508 Riverside St Unit 1) that is minutes from Cumberland County and already familiar with the homes, climate and codes here.
Aces Highlands installs high-efficiency boiler systems designed to keep your home warm through the toughest Maine winters. Every installation is properly sized, cleanly piped, and thoroughly tested before we leave.
We install oil, propane, and natural gas boilers from trusted manufacturers including Viessmann, Buderus, and Weil-McLain. Our installations feature clean copper piping, properly insulated lines, and professional workmanship that speaks for itself.
Every boiler installation starts with a heat loss calculation to determine the right size system for your home. An oversized boiler wastes fuel and short-cycles, while an undersized system cannot keep up in cold weather. We get the sizing right. Pair your new boiler with a radiant floor heating system for the ultimate in comfort.
We handle complete system installations including boiler placement, piping, zone controls, expansion tanks, and all necessary safety devices. Our work meets or exceeds all applicable codes and manufacturer specifications. Ask about our financing plans for new boiler installations.
Why Gray Calls Aces Highlands
- Based just outside Gray and out on Cumberland County calls every day
- Honest diagnostics and transparent pricing — no upselling
- Same-week scheduling for most service calls
- Licensed and insured — neighbors in Gray leave us reviews on Google
Gray Homes and What They Need
Gray's roughly 4,600 homes are younger than much of Cumberland County. Census estimates put the median year built at 1983, and only about one in eight predates 1940. Those older houses cluster around Gray Village and along the old roads out toward Dry Mills. The bigger story is the building wave of the 1970s through the 2000s, when capes, ranches and colonials went up on wooded lots within reach of Turnpike exit 63; about a quarter of homes date from 2000 or later. Roughly one in twenty is a manufactured home, and around 670 units are held for seasonal use, many of them camps on Little Sebago, Crystal and Forest lakes. Houses from the 1980s and 1990s are now reaching the age where original boilers, furnaces and electrical panels with no spare breaker space come due, while a lakeside camp raises questions about insulation and year-round use.
Heating and Cooling in Gray
Heating oil still dominates in Gray. Census estimates show about six in ten occupied homes heat mainly with fuel oil or kerosene, roughly 18 percent with propane, 12 percent with electricity and nearly 8 percent with wood, while utility gas barely registers at under 1 percent. Natural gas mains effectively do not reach the town, so propane is the fallback wherever a gas range or boiler is wanted. Gray is inland and snowy: its climate record shows January averaging in the low 20s Fahrenheit and around 84 inches of snow a year, and the National Weather Service office that forecasts for western Maine and New Hampshire sits on Weather Lane in Gray. For an oil-heated house, a cold-climate heat pump installation can carry most of the winter load while the existing boiler or furnace stays as backup for the coldest nights, and the same equipment handles summer cooling.

Getting to Know Gray
Gray holds one of Maine's most unusual Civil War stories: in 1862, the body of an unknown Confederate soldier was mistakenly shipped to Gray instead of a fallen local Union lieutenant. The women of the town buried the stranger in Gray Village Cemetery and paid for his headstone — marked simply "The Stranger" — and the grave is still tended today. Gray is also home to the Maine Wildlife Park, the state's refuge for animals that cannot return to the wild.
From the village center out to Dry Mills, Gray's homes range from 1800s farmhouses to newer builds off Route 26 — and we service heating, plumbing, and electrical in all of them.
Local & Independent — Not a Franchise
Aces Highlands is a locally owned Portland, Maine company serving Gray — not a national franchise. Our technicians are not commissioned salespeople and nobody here is required to upsell you anything. Getting invited back is the only metric that matters here.
How a Boiler Works
- Burner — ignites fuel to heat the exchanger
- Heat exchanger — heats the water circulating in the loop
- Circulator pump — pushes hot water through the loop
- Expansion tank — absorbs pressure as water heats and expands
- Baseboard loop — hot water out, cooler water returns
Homeowner Guide
Boiler Installation: Sizing, Piping & the Details That Matter
A boiler replacement is one of the few HVAC jobs where reusing the existing piping layout without checking it can quietly undercut the new equipment's performance.
Read the Full GuideMore Boilers & Hydronic Heating
Boiler Installation is part of our full boilers & hydronic heating lineup. Explore the details or browse everything we offer in Gray.
Boiler Installation DetailsAll Services in GrayService Info
Codes & Permits for Boiler Installation in Gray
In Gray, plumbing permits come from the Local Plumbing Inspector at the Gray Code Enforcement Office (Henry Pennell Municipal Complex, 24 Main Street, Gray, ME 04039, (207) 657-3339). With 8,269 residents, Gray is required to enforce the Maine Uniform Building and Energy Code (MUBEC). Gray includes frontage on Little Sebago Lake, Crystal Lake and Forest Lake and is drained by Collyer Brook — all relevant to well/septic siting and shoreland zoning outside the water district's service area.
- Chimneys and vents serving fuel-fired appliances, including hydronic boilers, are governed by NFPA 211, the standard for chimneys, fireplaces, and vents. maine.gov
- State law requires a carbon monoxide detector in each area within or giving access to a bedroom wherever a fuel-burning heating appliance like a boiler serves a covered dwelling. mainelegislature.org
- Installing or servicing an oil-fired boiler in Maine requires a Maine Fuel Board Oil Burner Technician license (Apprentice, Journeyman, or Master), and apprentices must work under a licensed technician. maine.gov
How Aces Highlands Handles Boiler Installation in Gray
- Unitil has mains through parts of Gray, 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.
- About 53% of Gray 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.
- We don't close out a boiler installation without confirming CO detectors are installed near sleeping areas, which Maine requires wherever the heat comes from burning fuel.
Hancock Street near the center of Gray village, close to the town's public library.
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!
Steve Robertson
3 months ago
Where to begin? These guys hooked up a sauna for me and did an amazing job, it was not a small job. Projects big or small, these guys are my go to. Responsive, reasonably priced, and professional. In a world where it is tough to get good service, I'm thrilled to have these guys in my phone.
Ryan Eling
3 months ago
This team was called in by my property management company for where I rent. Elijah and his team were professional, clear speaking. Good communicators gave me the real deal. Didn't give any runaround. I trust them and want to use them for my own projects.
Boiler Installation FAQs
How long does a boiler last in Maine?
A well-maintained cast-iron boiler commonly runs 20–30 years; high-efficiency condensing boilers typically last 15–20. Annual maintenance is the biggest factor — a neglected boiler gives up years early, a serviced one keeps going.
How much does boiler replacement cost?
Most full residential replacements in Southern Maine land between $7,000 and $12,000 installed, depending on fuel type, efficiency class, and the piping and venting work involved. We provide a firm written quote before any work begins, and financing is available.
How long will I be without heat during the swap?
Most replacements are completed in one to two days, and we plan the changeover so your home is without heat for the shortest window possible — usually just part of one working day.
Should I convert from oil to propane or natural gas?
It depends on fuel availability at your address, your current equipment’s age, and long-term fuel pricing. Conversions unlock quiet, compact high-efficiency boilers, but they carry added venting and fuel-line costs. We install oil, propane, and gas systems, so our recommendation is not biased toward any one answer.
What boiler brands do you install?
We install trusted manufacturers including Viessmann, Buderus, and Weil-McLain, and we match the brand and model to your system design rather than pushing a single house brand.
More Services in Gray
Aces Highlands handles HVAC, plumbing, and electrical for Gray homeowners. Here is more of what we do nearby.
Boiler Repair in Gray
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Furnace Installation in GrayFurnace Repair in Gray
Furnace Repair in GrayFurnace Maintenance in Gray
Furnace Maintenance in GrayNeed Boiler Installation in Gray?
Call our Gray team or get a free quote. We will get you scheduled and take care of it right the first time.
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