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Top-Rated Central a/c service or repairers in Leominster - Updated Nov 2026

Avatar for Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
4.4(
200
)
Central A/C - Service or Repair

Serving Leominster, MA and surrounding areas

Approved

In business since 1979

Credit card accepted

Customers say: Super punctual

"Very professional in setup of appointment. Office made it clear that the upfront charge was $85 for the visit and the technician would provide an estimate of the work if any and the $85 would count against the work. Technician arrived on time and was very professional and courteous. He quickly identified that the 240V => 24V transformer was the root cause for the loud humming noise, and recommended replacing it. He gave an estimate of $468 for the work. I showed him that the transformer itself was less than $50, and I could not understand the estimate. He showed the company estimate on his iPad. I declined the recommended service. I got the work done for a little more than half the estimate from Milltown from another service provider. I would suggest that Milltown revisit their estimation software. I have rated as "Fair" only because the technician was very professional."
Additional Photos
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8 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Landry Mechanical, Inc.- HVAC
Landry Mechanical, Inc.- HVAC
4.5(
108
)
Central A/C - Service or Repair

Serving Leominster, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2008

Emergency services offered

Warranties offered

"Our central air unit died during the hottest days of the year so far. It is a new unit . We called a few places desperate for service and were told it would be a few weeks for most companies to make it out. Called Landrys after finding them on google. A woman called me back less than 20 minutes after first phone call and said they would be out today. Tyler came and was great. Fixed our unit and saved our life! We will be using them in the future for sure. 5 stars for service and their customer service is without a doubt 5 stars as well."
Mitsubishi Ductless
Furnace install
Water filtration
Stretching out during a hvac install
New heat pump and furnace

+50

Response time11 hrs
Response rate97%
22 neighbors recently requested a quote
Avatar for Domination Plumbing and Heating
Domination Plumbing and Heating
4.6(
23
)
Central A/C - Service or Repair

Serving Leominster, MA and surrounding areas

Approved

In business since 2011

Free estimates

Warranties offered

"Excellent and flexible team; they were able to complete my project on the first visit despite having to work with a very old home and some unusual infrastructure. Customer service and communication were top notch - I'll definitely be hiring these guys again in the future!"
Custom Work
Custom Work
Custom Work
Custom Work
Custom Work

+20

Response time4 hrs
Response rate96%
10 neighbors recently requested a quote
Avatar for VVS HVAC & Home Improvement Services LLC
VVS HVAC & Home Improvement Services LLC
5.0(
5
)
Central A/C - Service or Repair

Serving Leominster, MA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of HVAC services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction! \n

Boiler
Furnace installation
Furnace installation
Furnace installation
Furnace installation

+11

3 neighbors recently requested a quote
Avatar for O'Hara Heating And Cooling
O'Hara Heating And Cooling
4.9(
9
)
Central A/C - Service or Repair

Serving Leominster, MA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

OHara Heating And Cooling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business.

Response time1 day
Recommended by100%of homeowners
Papalia Home Service
4.8(
5
)
Central A/C - Service or Repair

Serving Leominster, MA and surrounding areas

Approved (Corporate)

In business since 1990

Free estimates

Credit card accepted

Papalia Home Services is a business that has been serving the Boston Metro West Area since 1990. With over 30 years of service under our belts, we've grown into the most dedicated plumbing & heating service in the Bay State, many thanks to our fully-trained technicians. No matter if it's installation, repair, replacement, you name it—our staff is trained how to handle the latest technology and will always show up to your home with a fully stocked truck ready to go! \n

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FAQs for central a/c service or repair projects in Leominster, MA

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The Leominster, MA homeowners’ guide to central a/c service or repairs

From average costs to expert advice, get all the answers you need to get your job done.