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Find Central a/c service or repairers in Millis

Avatar for BK Appliances
BK Appliances
4.4(
811
)
Central A/C - Service or Repair

Serving Millis, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Emergency services offered

Customers say: Quick response

"Bernard called us and then came to our house with all needed parts and repaired our dryer all in the same day. The repair cost was very reasonable and probably saved us about $1,000 in replacement cost. I highly recommend BK Appliance and am so glad to have such a great appliance repair service to rely on for future work."
Response time5 hrs
Response rate100%
Recommended by94%of homeowners
Avatar for ARS - Boston
ARS - Boston
4.3(
365
)
Central A/C - Service or Repair

Serving Millis, MA and surrounding areas

Approved (Corporate)

In business since 1984

Free estimates

Emergency services offered

"The team of 3 arrived as promised! They set up the work station by spreading cover on the floor to protect my tiles. That was very satisfying to me. They were actually busy working diligently throughout the day. They provided 3 space heaters for my use if I needed. I was informed of what was going on that needed my attention. The end product seemed very good although it is too early to judge its quality. This review would have been rated with 5 stars, but I have concerns in some areas. First, the height of the exhaust pipe was shorter than I had expected. Their reasoning for not raising the exhaust pipe is not accurate. They claimed my windows were in the way. There is a clear pathway to place the the pipe if they had wanted. I’m still concerned about the exhaust fumes entering my living room if the window is open. I was told quality inspection would be performed, that has not happened yet. I hope it happens! Second, the thermostat wiring on the second floor or zone 3 does not have common wire C. The bypass that was installed in the Teco relay system didn’t work. It worked briefly for short time and then stopped. When I contacted the sales agent, he referred me to the office to explain my issue. I thought he was going to take me out of the loop as most customer satisfaction oriented company would have done. I complied and the customer service office referred me back to the same person! When the he got back to me, it was more in defense than empathy. He tried erroneously to cast the blame on my supplied thermostat, which was not involved. Eventually, he sent someone who was able to fix the problem. Third, the sales agent didn’t provide the most critical info on the contract form, the AHRI number. This number is needed for MassSave loan application. He provided it later. So far, the Lennox hot water and boiler combi and my 3 google nest learning thermostats are working very well. Even with the stated issues, I would definitely recommend ARS Rescue Rooter for providing a good product at a fair price. This company has the potential to leap frog competition to become the leader provider in this industry. If only it implements hassle free procedures for its customers."
HVAC System 1
HVAC System 3
HVAC System 4
HVAC System 5
HVAC System 6

+10

273 neighbors recently requested a quote
Recommended by71%of homeowners
Avatar for ENDLESS ENERGY NEW ENGLAND, INC.
ENDLESS ENERGY NEW ENGLAND, INC.
4.7(
20
)
Central A/C - Service or Repair

Serving Millis, MA and surrounding areas

Approved

In business since 1980

Free estimates

Emergency services offered

Endless Energy is a trusted local HVAC and Plumbing Company servicing the majority of the state of Massachusetts with office in Marlborough, Needham, and Randolph. Specializing in Heat Pumps, Central AC, Furnaces, and Boilers, we have Master Plumbers, Electricians, and HVAC Technicians all under one roof reducing your need to find multiple contractors! We are also a Mass Save partner and can conduct your no cost Mass Save Home Energy Assessment and install any recommended insulation.\n\nWe can help you with: \n*Heating Repairs, Installation, & Service\n*AC Repairs, Installation, & Service\n*Plumbing Repairs, Installation & Service\n*Water Heater Replacement & Service\n*Indoor Air Quality Solutions\n*Ductwork & Line Set Solutions\n*Electrical Panel Upgrades and Replacement\n*Insulation \n*No Cost Home Energy Assessments\n\nA Mass Save certified contractor with an A+BBB rating. All of our skilled technicians undergo an extensive background and drug screening prior to being hired to our team!

Holliston Heat Pump
Boston Heat Pump
Natick Ducted System
247 neighbors recently requested a quote
Recommended by70%of homeowners
Avatar for 1st Call Emergency Heating & Cooling
1st Call Emergency Heating & Cooling
5.0(
9
)
Central A/C - Service or Repair

Serving Millis, MA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

""I recently had my HVAC system serviced, and I couldn't be more impressed. Michael McGinn was extremely knowledgeable and skilled, diagnosing and fixing the issues quickly. He explained the process clearly, provided helpful advice, and ensured everything was working perfectly before leaving. His professionalism, attention to detail, and friendly approach made the experience stress-free and reassuring. I highly recommend their services to anyone looking for reliable and expert HVAC care.""
Boiler install
Boiler install
Same Day
1 neighbors recently requested a quote
Avatar for Cotti Johnson HVAC, Inc.
Cotti Johnson HVAC, Inc.
4.3(
63
)
Central A/C - Service or Repair

Serving Millis, MA and surrounding areas

Approved

In business since 1944

Free estimates

Emergency services offered

"My electrician from Cotti-Johnson HVAC was a master electrician. If you get him, you are getting the best. I went with the most expensive work package of the 3 that were presented. First off, it was pricey. I knew that going in. I want Cotti-Johnson to understand that I am serious about a working relationship with them. I feel I have done that with their electrical department. Now, if I need their plumbing or HVAC service, our relationship can build off the first experience."
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation
Home Standby Generator Installation

+56

Response time9 hrs
Response rate97%
98 neighbors recently requested a quote
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Showing 1-10 of 196
FAQs for central a/c service or repair projects in Millis, 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 Millis, 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.