Maine HVAC Services — Heating, Cooling & Heat Pumps
Southern Maine Mechanical is greater Portland's trusted HVAC contractor. Licensed, insured, and locally owned — delivering expert heating repair, cooling installation, heat pump upgrades, and 24/7 emergency service across all of southern Maine.
Complete HVAC Services Across Southern Maine
From routine tune-ups to full system replacements, our licensed technicians cover every aspect of your heating and cooling needs.
HVAC Repair
When your heating or cooling system stops working, you need a licensed technician on-site fast — not a call center. Sout…
HVAC Installation
Replacing or installing a new HVAC system is one of the most significant investments you'll make in your home. Southern …
AC Repair
Maine summers are shorter, but they're hot — and humid. When your air conditioning breaks down, Southern Maine Mechanica…
Furnace Repair
A broken furnace in Maine winter is an emergency. Southern Maine Mechanical provides fast furnace repair across Portland…
Heat Pumps
Heat pumps are the most efficient way to heat and cool a Maine home — and with Efficiency Maine rebates up to $10,000, t…
Mini-Splits
Ductless mini-splits deliver precise, efficient heating and cooling to individual rooms — without the expense of install…
Emergency HVAC
HVAC emergencies don't follow business hours. When your heat fails on a January night or your AC goes out during a heat …
Commercial HVAC
Southern Maine Mechanical provides commercial HVAC services for businesses across greater Portland and southern Maine. F…
Air Duct Cleaning
Over years of operation, your home's ductwork accumulates dust, allergens, pet dander, mold spores, and debris that circ…
Maintenance Plans
The single most effective thing you can do to extend your HVAC system's life and avoid unexpected breakdowns is a schedu…
Heat Pump Cleaning
A heat pump is only as efficient as it is clean. Southern Maine Mechanical provides professional heat pump cleaning and …
Boiler Installation
Southern Maine Mechanical installs high-efficiency gas and oil boilers for homes across greater Portland and all of sout…
Boiler Repair
A failed boiler in a Maine winter is an emergency. Southern Maine Mechanical provides fast, professional boiler repair f…
Heat Pump Installation
A properly installed cold-climate heat pump heats and cools your home for a fraction of the cost of oil, propane, or ele…
Heat Pump Repair
When your heat pump or mini-split stops heating or cooling, Southern Maine Mechanical gets it back online fast. Our tech…
AC Installation
Maine summers are short but genuinely hot and humid. Southern Maine Mechanical installs central air conditioning and duc…
Furnace Installation
When it's time to replace an aging or failed furnace, Southern Maine Mechanical installs high-efficiency gas and propane…
Water Heater Installation
From a leaking tank to an upgrade to high-efficiency tankless, Southern Maine Mechanical installs and replaces water hea…
Why Southern Maine Homeowners Choose Us
We're not a franchise. Not a national chain. We're a locally owned HVAC contractor who lives and works in the same communities we serve — and we treat every job like it's our own home.
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Efficiency Maine Heat Pump Rebates — Up to $10,000
As an authorized Efficiency Maine contractor, we handle all the rebate paperwork on your behalf. Most qualifying heat pump installations in southern Maine receive between $1,500 and $10,000 back — and the federal Inflation Reduction Act adds a 30% tax credit on top of that.
HVAC Service Area — Greater Portland & Southern Maine
We cover all of Cumberland & York Counties plus surrounding communities.
HVAC Topics for Maine Homeowners
HVAC Repair vs. Replacement
The 50% rule: if a repair costs more than 50% of a new system and your unit is over 15 years old, replacement usually wins financially. We walk you through this math on every diagnostic visit.
Read More about HVAC Repair vs. ReplacementSigns You Need Emergency HVAC Service
No heat below freezing, gas smell, carbon monoxide alarm, sparks, or flooding from equipment — these are emergencies. Call us immediately. We answer 24/7 and dispatch fast.
Read More about Signs You Need Emergency HVAC ServiceMaine Winter Heating — What Actually Works
Modern cold-climate heat pumps work down to -13°F. Many Maine homeowners now use them as primary heat. Oil and propane remain viable backups, especially in older homes without good insulation.
Read More about Maine Winter Heating — What Actually WorksMini-Split Installation Without Ductwork
No ductwork? No problem. Ductless mini-splits deliver precise heating and cooling through a small hole in the wall — ideal for additions, garages, converted spaces, and whole-home zoning.
Read More about Mini-Split Installation Without DuctworkCommon Furnace Problems in Maine
The top furnace failures we see: ignitor failure, dirty flame sensor, cracked heat exchanger, failed inducer motor, and low airflow from clogged filters. Annual maintenance catches most of these before they become breakdowns.
Read More about Common Furnace Problems in MaineIndoor Air Quality & Duct Cleaning
Your ductwork accumulates years of dust, allergens, and debris that recirculate every time your HVAC runs. Post-renovation ductwork is especially problematic. Cleaning improves air quality and system efficiency.
Read More about Indoor Air Quality & Duct CleaningHVAC Questions — Answered
What HVAC services do you offer in Maine?
We offer HVAC repair, HVAC installation, AC repair, furnace repair, heat pump installation, mini-split installation, emergency HVAC service, commercial HVAC, air duct cleaning, and annual maintenance plans — for homes and businesses throughout greater Portland and southern Maine.
Do you offer 24/7 emergency HVAC service?
Yes. During the heating season, we provide around-the-clock emergency service. When you call our emergency line, you reach a technician directly — not an answering service. We target a 2-hour response time for heating emergencies.
Are you Efficiency Maine authorized?
Yes. We are an authorized Efficiency Maine contractor. We handle all rebate paperwork on your behalf for qualifying heat pump installations. Rebates currently range from $1,500 to $10,000.
What areas do you serve in Maine?
We serve all of Cumberland and York Counties including Portland, South Portland, Scarborough, Falmouth, Gorham, Westbrook, Windham, Yarmouth, Freeport, Brunswick, Saco, Biddeford, Kennebunk, Wells, and more — 30+ towns total.