Home Performance Services in Brunswick, Maine
Insulation, Heat Pumps &
Air Sealing in Brunswick
Brunswick is a town with layers: a walkable downtown with 18th and 19th-century Colonial and Federal homes near Bowdoin College, 1950s ranches and split-levels in the outer neighborhoods, and Brunswick Landing's new construction on the former naval air station. About 20% of the housing stock was built before 1940. The older downtown homes have balloon framing, plaster walls, and little insulation. The mid-century stock has the typical platform-frame issues. All of it benefits from the same science-based approach. Just 31 miles from our Westbrook shop.
- Blown-in insulation for attics, walls, and basements
- Heat pump installation for year-round comfort
- Professional air sealing to stop drafts
- Efficiency Maine rebates up to $18,650
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What We Do for Brunswick Homeowners
Insulation
Downtown Brunswick's Colonial, Federal, and Victorian homes near Bowdoin were built with balloon framing and no cavity insulation. The 1950s and 60s ranch and split-level stock in outer neighborhoods has settled fiberglass batts and bare rim joists. We dense-pack wall cavities without removing plaster, bring attics up to R-49, and seal the rim joist with spray foam — tailored to each era of construction.
Insulation in BrunswickHeat Pumps
The older homes near downtown and Bowdoin rarely have ductwork — ductless mini-splits are the practical choice. Landlords with rental properties near campus see real financial benefit from heat pump upgrades: lower utility costs, more comfortable units, and tenants who aren't complaining about drafts in November. Mid-century ranches with forced-air systems can often integrate heat pumps with existing ductwork.
Heat pumps in BrunswickAir Sealing
Balloon-frame downtown homes have continuous wall cavities that act as chimneys in winter. Coastal moisture near Mere Point and Maquoit Bay makes moisture management in wall assemblies as important as the insulation itself. We use blower door diagnostics to locate every leak path and seal systematically — particularly the attic bypasses that drive ice dams and heat loss in Brunswick's older housing.
Air sealing in Brunswick
Why Brunswick Homeowners Choose Horizon Homes
Brunswick's housing spans three centuries. We work across all of it.
Historic Downtown Stock
The pre-1940 homes near Bowdoin and downtown Brunswick have balloon framing, plaster walls, and in many cases no wall insulation at all. Air leakage in these homes accounts for a disproportionate share of heat loss. We dense-pack walls without removing plaster, seal the attic bypasses that are responsible for most of the cold, and verify results with blower door testing.
Every Neighborhood
From the walkable streets near Maine Street to the Cooks Corner area to the waterfront homes at Mere Point, Brunswick's neighborhoods each have a different character and housing stock. We assess each home individually and recommend the improvements that make the most sense for that specific structure and budget.
Just 31 miles from Westbrook
A straightforward drive up I-295. No travel surcharges for Brunswick projects. Efficiency Maine rebates apply fully to every Brunswick homeowner.
What Our Customers Say
"Horizon Homes is excellent. They have supported us for a number of projects across insulation and carpentry and I can't recommend them enough. Cody is extremely thoughtful and has supported us over hours on the phone answering questions."
"No more cold floors, no more drafts in the living room. The difference after insulation and air sealing was immediate and dramatic. I wish I had done this years ago. Horizon handled the Efficiency Maine rebate. I didn't have to do a thing."
"The crew was meticulous. They sealed every penetration before blowing in the insulation, explained exactly what they were doing, and left the attic cleaner than they found it. Our heating bill dropped noticeably the very first month."
Real Results in Brunswick
1920s Colonial Near Bowdoin Cuts Heating Bills by 35%
A Brunswick homeowner in a 1924 Colonial near downtown was spending $4,200/year on oil heat. Blower door testing revealed over 3,000 CFM50 of leakage. The balloon-frame walls had no insulation, the attic had minimal fiberglass batts from a previous owner, and the rim joist was completely open.
We sealed the attic thoroughly, dense-packed the wall cavities, and insulated the rim joist with spray foam. Oil use dropped from 1,000 gallons to about 650 gallons. The owner added a single-zone heat pump the following year, reducing oil use further and getting air conditioning for the first time.
Rebates Available for Brunswick Homeowners
As an Efficiency Maine registered vendor, we handle all the paperwork. Brunswick homeowners qualify for the same rebates as every Maine resident.
More Brunswick Homeowner Resources
Practical guides for Brunswick homeowners considering ductless mini-splits, replacing an aging boiler, or comprehensive energy upgrades. We service Brunswick regularly with no travel surcharge.
Mini-Split vs. Central Heat Pump
Which approach fits a Brunswick home with no central ductwork.
Heat Pump vs. Boiler
How to think about replacing an oil boiler with a heat pump in an older Brunswick home.
Heat Pump Cost in Maine
Pricing ranges for single-zone through whole-home systems.
Do Heat Pumps Work Below Zero?
Real performance data from Maine winters.
Blown-In Cellulose Insulation
Our approach to insulating older Brunswick homes without damaging finishes.
2026 Efficiency Maine Rebates
What rebates Brunswick homeowners qualify for and how we handle the paperwork.