Boiler Installation in Southern Maine — High-Efficiency Heating
Southern Maine Mechanical installs high-efficiency gas and oil boilers for homes across greater Portland and all of southern Maine. Whether you're replacing an aging boiler, upgrading to a high-efficiency condensing model, or adding hydronic heat to a new space, our licensed technicians size and install every system to manufacturer specs — and back the work with a written warranty.
New Boiler Installation Across Southern Maine
We install boilers for homes throughout Cumberland and York Counties — Portland, South Portland, Scarborough, Falmouth, Cape Elizabeth, Gorham, Westbrook, Windham, Saco, Biddeford, Kennebunk, and beyond. Our technicians are trained on all major boiler brands including Weil-McLain, Burnham, Buderus, Navien, Rinnai, Viessmann, and Peerless. Every installation includes proper sizing calculations, gas or oil line connections, circulator pump installation, expansion tank, and a full startup and commissioning.
High-Efficiency Condensing Boilers — Lower Bills, Better Comfort
Modern condensing boilers achieve efficiency ratings of 95% AFUE or higher — compared to 70–80% for older cast-iron units. That means for every dollar you spend on fuel, 95 cents goes to heating your home. Over a Maine winter, that difference adds up significantly. We'll walk you through the efficiency options, explain the payback period, and help you select the right boiler for your home's heat load and existing distribution system.
Boiler Replacement: When Is It Time?
Most boilers last 20–30 years with proper maintenance. Signs that replacement makes sense include: frequent repairs costing more than 30% of a new system, inconsistent heat zones, significant rust or corrosion, a pilot or ignition that won't stay lit, and a spike in fuel usage despite no change in habits. We'll give you an honest assessment — not a sales pitch — on whether repair or replacement is the smarter investment.
Hydronic Radiant Heat and Baseboard Systems
A boiler feeds your home's distribution system — whether that's cast iron or copper baseboard radiators, radiant floor tubing, or a combination. We install and configure all distribution types, including adding new zones, balancing existing zones, and upgrading zone valves and thermostats. If you're adding an addition or finishing a basement, we can extend your existing boiler system or right-size a new one.
Ready to Get Started?
Free estimates on all installations. Same-day service available.
(207) 560-7890 Free EstimatesGet It Done Now, Pay Later
Financing Available for HVAC Installations
Southern Maine Mechanical offers flexible financing options for qualified customers on heat pump installations, boiler replacements, furnace replacements, central air systems, and other HVAC projects.
Promotional Financing
- 0% interest if paid in full within 6, 12, or 18 months
- Deferred interest may apply if the balance is not paid in full by the end of the promotional period
Fixed Monthly Payment Plans
- Reduced APR options may be available
- Common terms may include 60-month financing
- Great for larger heat pump, boiler, furnace, and central air installations
Example Monthly Payments
- $8,500 system~$142/mofor 60 months
- $12,000 system~$200/mofor 60 months
- $20,000 system~$333/mofor 60 months
Financing is subject to credit approval. Terms, rates, promotional periods, and monthly payments may vary. Promotional financing may include deferred interest. Southern Maine Mechanical does not guarantee approval or specific loan terms.
Signs You Need a New Boiler
Frequently Asked Questions
Boiler Installation by City — Southern Maine
We provide boiler installation throughout Cumberland & York Counties.