Heating Repair, Installation & Maintenance in New Bedford & the SouthCoast
Armus Mechanical, based in Lakeville, repairs, replaces and maintains heating systems. We work on furnaces, boilers, radiant floors and heat pumps across New Bedford and the SouthCoast. Use the guide below to find the page that matches the system in your house.
- Same-day repair
- Free estimates on new systems
- Financing through Wisetack
- Warranty on our labor
No heat? Tell me what's going on and I'll get a technician out.
At a glance
- Service area
- New Bedford, Lakeville and the rest of the SouthCoast, plus the South Shore, Cape Cod and Rhode Island
- Based in
- Lakeville, MA. We come to your home or business.
- Phone
- 508-521-9477, answered 24/7
- Specialties
- Furnaces, boilers, radiant floors and heat pumps: repair, replacement and yearly maintenance
- Pricing
- Repairs start with a paid diagnostic visit. Replacements get a free written estimate.
Which heating system do I have, and where do I start?
Look at how your house gets its heat, then go to the matching page.
- Furnace services: Vents in the floors, walls or ceilings mean forced-air heat from a furnace. This page covers repair, replacement and tune-ups for gas and oil furnaces.
- Boiler repair and installation: Radiators or baseboard mean a boiler heating water or steam. This page covers gas, oil and propane boilers, steam and hot-water systems: service, repair, replacement and new installation.
- Radiant heating: Warm floors fed by loops of tubing and a manifold are radiant heat, usually supplied by a boiler.
- Heat pumps: An outdoor unit with ducts or wall units that both heats and cools is a heat pump.
- Mini splits: Wall-mounted indoor units without ducts are mini splits, a kind of heat pump.
- Emergency heating and AC repair: Use this page when the heat is out right now. The phone is answered 24/7.
- HVAC repair: Not sure which system is acting up? This page sends you to the right repair page.
- Oil-to-gas conversions: For oil heat owners who are thinking about switching.
- HVAC maintenance: Yearly cleaning and safety checks for the whole system.
What are the signs your heating needs attention?
Match what you see to the right page.
- No heat, or heat that comes and goes in cold weather: see emergency heating and AC repair
- Weak air from the vents, or rooms that stay cold on ducted heat: see furnace repair
- Cold radiators or baseboard while the boiler runs, banging or rumbling noises, or water near the boiler: see boiler repair and installation
- Floors that stay cold or heat unevenly: see radiant heating
- A heat pump or mini split that blows cool air all winter or shows an error code: see heat pump repair
- An oily, burning or sooty smell: turn the system off and call us. A gas smell means everyone leaves the house first, then you call your gas company or 911 from outside.
- A system near the end of its typical life, or repairs that keep returning: see the repair or replace guide below
Should I repair or replace my heating system?
Repair a heating system when one part has failed. Replace it when the system itself is worn out, unsafe or no longer worth fixing.
Usually a repair
- One failed part on a system that has otherwise run well
- A problem in one zone or one room, such as a zone valve, a circulator or a duct issue
- A problem that a tune-up solves, such as a dirty burner, a clogged filter or a dirty flame sensor
Usually time to replace
- A cracked heat exchanger on a furnace, or a cracked section in a boiler
- Repairs that keep returning in the same season
- Parts that are no longer available
- A system near the end of its typical life that now needs a major part
Furnaces typically last 15 to 20 years. Cast-iron boilers can run 20 to 30 years or more, and condensing boilers often last 15 to 20. Our furnace installation and replacement page and our boiler repair and installation page explain what we check before we recommend a replacement.
Heating: job photos
Real jobs, photographed by the technician who did the work.
How does a heating visit work, and what does it cost?
Diagnostic. Heating repairs start with a paid diagnostic visit. We find the cause, explain it, and put the repair price in writing before any work begins.
Estimate. Replacements get a free written estimate. We visit the house, measure, and look at the fuel, the distribution and the venting before we recommend a system, so we do not price heating equipment by phone.
What to have ready.
- The type of system, if you know it: furnace, boiler, radiant floors or heat pump
- The fuel: gas, oil, propane or electric
- The system’s age, or a photo of its label
- What it is doing, and which rooms or zones are affected
Book online. A heating visit that can wait can be booked online: send the form, and we confirm your visit by text. If the heat is out, call 508-521-9477.
Mass Save Heat Pump Installer Network participating contractor.
Rebates and the 0% HEAT Loan available.
Financing for new systems runs through Wisetack via Housecall Pro, subject to credit approval. Estimates on new systems are free.
Recent heating jobs
From our completed jobs, most recent first. Customer names and street addresses are left out.
- August 2026, Duxbury. Radiant heat system: Replaced the manifold assembly.
- July 2026, Duxbury. Radiant heat system: Diagnosed zones that were not working properly.
- July 2026, Provincetown. Geothermal heat pumps: Replaced a failed zone valve actuator in a shared geothermal loop.
- July 2026, Middleborough. Oil boiler: Annual maintenance.
- July 2026, Lakeville. Oil-fired furnace: Replaced the furnace and took out the old oil tank.
- May 2026, Middleborough. Furnace: Full combustion test during an annual safety check.
Where do you service heating systems?
We work in Lakeville, New Bedford, Middleborough, Dartmouth, Fall River, Taunton, Wareham, Brockton, Fairhaven, and the rest of the SouthCoast, South Shore, Cape Cod and Rhode Island. See all service areas.
Brands we install & service
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Add it to a maintenance plan
Seasonal tune-ups keep your heating system efficient and catch small problems before the first freeze.
See maintenance plansHeating questions, answered
How do I know if I have a furnace or a boiler?
A furnace heats air and sends it through ducts to vents in the floors, walls or ceilings. A boiler heats water or steam and sends it to radiators, baseboard or floor tubing. If you can see radiators or baseboard you have a boiler, and if you see vents you most likely have a furnace.
My heat is out. Who do I call and what happens next?
Call 508-521-9477; the phone is answered 24/7. We ask what the system is doing and tell you the earliest visit we can offer. The repair itself starts with a paid diagnostic visit.
Should I switch from oil to gas or a heat pump?
It depends on whether gas is on your street, how the house is laid out and how long you plan to stay. We price the options in writing so you can compare them. Start with oil-to-gas conversions or heat pumps.
Do you service heating systems you did not install?
Yes. We service furnaces, boilers, radiant systems and heat pumps whoever installed them.
When should I schedule heating maintenance?
Book it in late summer or fall, before the first cold weather. A yearly tune-up catches small problems before they stop the heat. See HVAC maintenance; our Home Comfort Plan page lets you ask about maintenance options.
Are there rebates for a new heating system?
Sometimes. The rebate depends on the equipment and on who supplies your gas or electricity. Mass Save offers rebates and the 0% HEAT Loan for qualifying equipment, with the biggest incentives on heat pumps. Some municipal utilities run their own programs. Rhode Island Energy offers heat pump rebates, and income-qualified households may get more through Clean Heat RI. We check the current program for your address before you decide, and our Mass Save page explains the process.
Why is my heating system blowing cold air?
First work out which system you have. A furnace blowing cold air may have lost its flame, tripped a limit switch or have a clogged filter, a boiler or baseboard system does not blow air at all, and a heat pump can blow cool air briefly while it defrosts. Our pages on furnace repair, boilers and heat pump repair go deeper. We check the system on a diagnostic visit, so call 508-521-9477 or tap Book ASAP.
Why is my thermostat blank and my heat not working?
Start with the safe checks: fresh batteries in the thermostat, the power switch on the furnace or boiler, and the main power to the heating system. If the thermostat has power and stays blank, the cause may be a failed transformer or a fault in the low-voltage controls. We check the controls on a repair visit. Call 508-521-9477, answered 24/7, or tap Book ASAP.
Schedule heating service in New Bedford & the SouthCoast
Call 508-521-9477, answered 24/7, or tap Book ASAP and the office confirms your visit by text.