HVAC companies in Portland, ME
Compare up to three local Portland HVAC contractors from Henry's vetted bench — AC repair, furnace and heat pump service, and full system replacement.
Portland, Maine is a heating city first and a cooling city a distant second. Winters bring months of sustained cold off Casco Bay, and the housing stock reflects it: pre-1940 capes and colonials in the West End and Munjoy Hill still running oil-fired boilers and cast-iron radiators, mid-century homes in Deering Center and North Deering on forced-hot-water or oil furnaces, and a fast-growing share of houses across Back Cove, Rosemont, and Stroudwater that have added ductless mini-split heat pumps to cut oil and propane use. Cooling is a short, mild season here - most homes get by on window units or a handful of mini-split heads rather than central AC, and a full central air system is the exception rather than the rule. What is not the exception is aging equipment: many oil boilers and furnaces in Portland's older neighborhoods are 20 to 40 years old, propane is common in areas without natural gas access, and a mid-winter no-heat call is a genuine emergency, not an inconvenience. Maine also handles licensing differently than most states - there is no general statewide HVAC contractor license, but oil burner and solid fuel technicians must be licensed through the Maine Fuel Board, and anyone touching refrigerant needs EPA Section 608 certification. Efficiency Maine runs some of the most substantial heat pump rebates in the country, which changes the math on almost every replacement decision. Henry cuts through the guesswork and connects you with up to three vetted local HVAC and heating contractors who know Portland's older housing stock, pull the required City of Portland mechanical permit, and put a written quote in front of you before any work starts.
The Henry Standard
Every HVAC contractor in our network agrees to three things.
Show up
Call back. Keep appointments. And if something changes, communicate it.
Quote honestly
Equipment, scope, permit, and price in writing — so you know what you're agreeing to.
Finish the work
See the job through, pull the permit, and pass inspection before calling it finished.
Nothing revolutionary. Just the way we believe doing business should still be done.
How Henry matches you with Portland HVAC contractors
- Step 1
Tell Henry what the system is doing
Your ZIP, whether it's a repair or a replacement, and how soon you need it handled. Two minutes, four questions.
- Step 2
Pros are already vetted
Only three Henry Standard HVAC contractors in your Portland-area ZIP get your request — pros we've checked for responsiveness, references and written estimates.
- Step 3
Compare up to three quotes
You hear from three HVAC contractors at most — never a list of twenty — and every estimate comes in writing. You pick, or pick nobody.
What HVAC work costs in Portland
| Furnace or boiler repair (minor: igniter, circulator pump, thermocouple) | $200 - $550 |
| Oil or gas furnace/boiler repair (major: heat exchanger, burner assembly) | $900 - $2,800 |
| Ductless mini-split heat pump installation (single zone) | $4,500 - $8,500 |
| Ductless mini-split heat pump installation (multi-zone, 3-4 heads) | $12,000 - $22,000 |
| Oil-to-heat-pump or oil boiler replacement | $8,000 - $18,000 |
| Central AC installation (add-on to existing ductwork) | $6,500 - $12,500 |
| Oil tank replacement (indoor, 275-gallon) | $1,800 - $3,500 |
| Seasonal tune-up / maintenance visit (furnace, boiler, or mini-split) | $130 - $280 |
Ranges are general estimates gathered from homeowner-reported quotes in the Portland area, not an offer or a quote for your project.
When to schedule HVAC work in Portland
Portland's heating season effectively runs October through April, and a hard freeze can arrive as early as late September or linger into May. That long a heating season means equipment runs far more hours per year than in most of the country, and it is also why a no-heat call in January can mean a multi-day wait during a cold snap - oil delivery trucks and service techs are both slammed. Cooling season is short, typically mid-June through early September, and most Portland homes never install central air at all, relying instead on window units or the cooling mode built into a ductless heat pump. The best windows for a full system replacement are late spring (May-June) and early fall (September), after the heating season ends and before the next one starts, when contractors have real availability and you are not paying an emergency premium.
Permits and HOA rules
The City of Portland's Permitting and Inspections Department, located at 389 Congress Street, requires a mechanical permit for furnace, boiler, and heat pump installations and replacements, including ductless mini-split installs. Most licensed contractors pull this permit on your behalf and schedule the required inspection before the job is considered closed. Oil tank installations and replacements also typically require a permit and must meet State Fire Marshal and DEP setback and containment rules. If your address is in a neighboring town such as South Portland or Westbrook rather than the City of Portland itself, permitting runs through that municipality's code enforcement office instead. Ask for the permit number on your written estimate - a contractor who cannot tell you how permitting works for your specific job is a red flag, especially on oil tank work where a failed inspection can affect a home sale.
Licensing and insurance in Maine
Maine does not license general HVAC contractors the way many states do - there is no single statewide 'HVAC license' number to check the way you would with, say, an electrician. What Maine does regulate is fuel-specific: technicians who install, service, or repair oil burners and oil heating systems must hold a license from the Maine Fuel Board (which also licenses solid fuel and propane/natural gas technicians under related classifications), and anyone who handles refrigerant on a heat pump or AC system must carry EPA Section 608 certification. Because there is no blanket HVAC license, the practical vetting steps are: confirm Maine Fuel Board licensing for any oil, propane, or solid-fuel work, confirm EPA 608 certification for refrigerant work, confirm the company carries general liability insurance and workers' compensation, and check whether the company is a registered Efficiency Maine Registered Vendor if you want a heat pump rebate to go smoothly. Ask for these credentials in writing before signing anything.
What Portland homes and heating systems are up against
Portland's building stock skews old. Pre-1940 capes, colonials, and triple-deckers in the West End and on Munjoy Hill were often built around cast-iron radiators fed by an oil-fired boiler, and a meaningful share of those boilers are original or close to it, sometimes 25 to 40 years old, tucked into low-clearance basements that make replacement more labor-intensive than a straightforward swap.
Oil remains the dominant heating fuel across much of Portland and the rest of Maine, with propane common in pockets without natural gas service, and both fuels mean homeowners deal with delivery scheduling and tank condition in a way that gas-heat homeowners in other states do not.
Ductless mini-split heat pumps have gone from rare to common over the last decade, driven heavily by Efficiency Maine rebates and the reality that a modern cold-climate heat pump can now handle a genuine Maine winter down well below zero degrees, cutting oil use dramatically even in homes that keep the boiler as backup heat.
Central air conditioning is genuinely uncommon here. Most homes in Deering Center, North Deering, and Back Cove get by on window units or the cooling function on a mini-split system, since Portland's cooling season is short enough that a full ducted AC system rarely pencils out on its own.
How to vet and compare Portland HVAC contractors
Because Maine has no general HVAC contractor license, ask directly for the credentials that do apply: Maine Fuel Board licensing for anyone working on an oil, propane, or solid-fuel system, and EPA Section 608 certification for anyone handling refrigerant on a heat pump or AC unit. A company that cannot answer clearly is worth skipping.
If you are considering a mini-split heat pump, ask whether the company is an Efficiency Maine Registered Vendor. Working with a registered vendor is generally required or strongly preferred to access Efficiency Maine's heat pump rebates, and a non-registered installer can cost you thousands in lost rebate money.
Ask for a heat loss calculation, not just a quote based on the size of your old boiler. Older Portland homes vary enormously in insulation quality between the original 1900s shell and any updates since, and correctly sizing a heat pump or boiler replacement matters more here than almost anywhere given how long and cold the heating season runs.
Get the City of Portland mechanical permit named on the estimate, confirm liability insurance and workers' comp, and ask what emergency response looks like in the dead of winter - a company with no after-hours coverage during a January cold snap is a real risk in this climate.
What HVAC work costs in Portland
Minor furnace or boiler repairs, such as an igniter, circulator pump, or thermocouple, run $200 to $550. Major repairs involving a heat exchanger or burner assembly run $900 to $2,800, and on an oil boiler already past 25 years old, it is worth getting a replacement quote alongside any major repair quote.
A single-zone ductless mini-split heat pump installation runs $4,500 to $8,500, while a multi-zone system covering three to four rooms - a common setup for a Portland cape or colonial - runs $12,000 to $22,000 before rebates. Efficiency Maine rebates can meaningfully reduce that out-of-pocket number, so ask for the post-rebate price, not just the sticker price.
Replacing an oil boiler outright, or converting primary heat to a cold-climate heat pump system with the oil boiler kept as backup, typically runs $8,000 to $18,000 depending on zoning complexity and whether existing radiators or baseboard need modification. Central AC add-ons to existing ductwork run $6,500 to $12,500, and an indoor 275-gallon oil tank replacement runs $1,800 to $3,500.
Treat these as Portland-area planning ranges based on typical homeowner-reported quotes, not a bid for your specific house - basement access, radiator zoning, electrical panel capacity, and tank condition all move the real number.
Permits, rebates, and licensing before you sign
Confirm the City of Portland Permitting and Inspections Department mechanical permit is included in your quote for any furnace, boiler, or heat pump installation - the office is at 389 Congress Street and permits are required whether you are replacing an oil boiler or adding ductless heads.
Look into Efficiency Maine's heat pump and weatherization rebate programs before signing a contract. Rebate amounts and rules change, and working with an Efficiency Maine Registered Vendor is typically necessary to claim them, so confirm vendor status and rebate eligibility in writing up front.
For oil-related work, confirm Maine Fuel Board licensing, and if a tank is being replaced, confirm the installer is following State Fire Marshal and DEP requirements for placement and spill containment - this matters at resale as much as for safety.
Get the permit number, equipment make and model, Maine Fuel Board or EPA 608 credentials as applicable, rebate paperwork, and a written parts-and-labor warranty before any deposit changes hands.
Getting matched with a Portland HVAC company
Henry does not sell your information to every heating company advertising in greater Portland. Describe the job and your ZIP code, and up to three vetted local contractors follow up with written quotes covering your specific fuel type and equipment.
Three quotes matter especially here because Portland's HVAC market spans oil specialists, mini-split installers, and general mechanical contractors, and pricing, rebate handling, and fuel expertise vary widely between them. Compare permit handling, Fuel Board or EPA 608 credentials, rebate eligibility, and warranty terms before you decide. Get matched at https://www.homeownerhenry.com/get-matched/hvac?zip=04101.
Explore the local guides: AC repair cost (https://www.homeownerhenry.com/blog/ac-repair-cost-portland-me), HVAC repair (https://www.homeownerhenry.com/blog/hvac-repair-portland-me), how to hire an HVAC company (https://www.homeownerhenry.com/blog/hvac-companies-portland-me-how-to-hire), and HVAC replacement cost (https://www.homeownerhenry.com/blog/hvac-replacement-cost-portland-me).
Areas Henry covers
Munjoy Hill · West End · East End · Deering Center · North Deering · Back Cove · Rosemont · Stroudwater
Common questions
Do I need a permit to replace a furnace, boiler, or heat pump in Portland, Maine?
Yes. The City of Portland Permitting and Inspections Department, at 389 Congress Street, requires a mechanical permit for furnace, boiler, and heat pump installations and replacements, including ductless mini-split installs, and an inspection closes the permit. Neighboring towns like South Portland or Westbrook permit through their own code enforcement offices.
How much does a ductless mini-split heat pump cost in Portland?
A single-zone system typically runs $4,500 to $8,500, and a multi-zone system covering three to four rooms runs $12,000 to $22,000 before rebates. Efficiency Maine heat pump rebates can significantly reduce the net cost, so ask contractors for a post-rebate price.
What license does an HVAC contractor need in Maine?
Maine does not issue a general statewide HVAC contractor license. Technicians working on oil, propane, or solid-fuel heating systems must be licensed through the Maine Fuel Board, and anyone handling refrigerant needs EPA Section 608 certification. Confirm those specific credentials rather than looking for a single HVAC license number.
Are there rebates for heat pumps in Portland, Maine?
Yes. Efficiency Maine runs rebate programs for cold-climate ductless heat pumps and other efficiency upgrades. Working with an Efficiency Maine Registered Vendor is generally required to access the rebate smoothly, so confirm vendor status before signing a contract.
Can a heat pump actually keep a Maine home warm in winter?
Modern cold-climate heat pumps are rated to keep producing heat well below zero degrees and are commonly installed as the primary heat source in Portland homes, often alongside an existing oil boiler kept as backup for the coldest stretches or as a redundancy.
Why don't more Portland homes have central air conditioning?
Portland's cooling season is short, typically mid-June through early September, so most homes rely on window units or the cooling mode of a ductless heat pump rather than installing a full ducted central air system, which rarely pays for itself given how little it would run.
What does it cost to replace an oil boiler in Portland?
Replacing an oil boiler, or converting to a cold-climate heat pump with the boiler kept as backup, typically runs $8,000 to $18,000 depending on radiator zoning and whether the basement setup requires extra labor to access.
Portland guides from The Henry Files
Sources
Get Portland HVAC estimates in writing.
Two minutes now beats a week of no cooling. Free, no obligation, never more than three HVAC contractors.
Get My Free HVAC Quotes