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Find Central a/c service or repairers in Waltham

Avatar for NETR Inc
NETR Inc
4.7(
78
)

Serving Waltham, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"My Central AC unit went out; the box outside smelled like something had fried. I called NETR, and they said they would send a technican over in a week. The technician came on time and promptly inspected the unit. He reported that the capacitor had blown, and told me that he had a spare back in his van. The labor was covered by the diagnostic site visit fee, it was just the parts cost. I told him to proceed and he replaced it. My AC was back up and running within the hour."
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
SOUTH END CONDO RECEIVES MITSUBISHI DUCTLESS SYSTEM
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+9

31 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for Peter Paone HVAC
Peter Paone HVAC
4.9(
24
)

Serving Waltham, MA and surrounding areas

Approved

In business since 2019

Free estimates

Small jobs welcome

"Peter did an excellent job tuning up my A/C system. He was extremely diligent in making sure my A/C unit was up to speed for cooling for the upcoming summer weather. I know I will most likely need a new system installed in the near future as this one is on it's last legs. I know who to call when I need a new A/C unit installed and it will be Peter!"
hvac
Ductwork
air conditioning
Mechanical
hvac

+1

Response time12 hrs
Response rate90%
3 neighbors recently requested a quote
Chambers Heating & A.C. Service
4.5(
51
)

Serving Waltham, MA and surrounding areas

Approved

In business since 1992

Free estimates

Emergency services offered

"I called Chambers and spoke with Kevin. He came out to my house the same day and diagnose my central air system as low on refrigerant. My system is twenty years old and has never been serviced. Kevin check out the system and based on the service history recommended that I recharge the system and monitor it over the summer. Kevin was honest with me and he wasn’t looking for the big pay day. I believe this is what every home owner wants when they hire a professional. Thanks Kevin!"
93% High Efficiency Gas Furnace with AC
Baseboard Zone on a Steam Boiler
Supply Header with Circulators
Before Pic w/zone valves & Loose Wiring
Gas Fired tankless water heater

+6

2 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,397
)

Serving Waltham, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Overall great customer and install service! Sila was quick and efficient when installing our central air system, explained all the costs and components upfront and all the staff I worked with were a pleasure. Would absolutely hire again!"
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+6

Response time2 days
63 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Genove Oil & Air Co
Genove Oil & Air Co
4.7(
216
)

Serving Waltham, MA and surrounding areas

Approved

In business since 1977

Free estimates

Emergency services offered

"I was happy with the introductory offer they had for new customers. The price was competitive. The yearly servicing I had on the boiler itself also went well. The technician took the time to explain how my system works and gave me tips on things I could do to maintain it. Very friendly overall."
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Pics
Pics

+2

Response time1 day
11 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for H L Bowman
H L Bowman
4.7(
409
)

Serving Waltham, MA and surrounding areas

Approved (Corporate)

In business since 1946

Free estimates

Emergency services offered

"Exceptional service from the initial diagnosis to repair, superb team. I appreciated everyone's thoroughness, willingness and honest business tactics. They provided a safe environment for me to ask questions and we explored all options. Ultimately, Joshua, sealed the deal by being caring and understanding. His expertise showed but most importantly his work ethics and integrity was felt. Many thanks to the whole team Brett, Joshua, Jason and Peter delivered Top notch service. Lastly, the communication was A+. Loved receiving text messages with photo id's, true professionals. Highly recommend! You won't be disappointed!"
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+6

762 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Landry Mechanical, Inc.- HVAC
Landry Mechanical, Inc.- HVAC
4.5(
106
)

Serving Waltham, 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%
32 neighbors recently requested a quote
Avatar for Green Flow Solution, Inc.
Green Flow Solution, Inc.
5.0(
13
)

Serving Waltham, MA and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

With years of experience and unmatched expertise, Green Flow Solutions is proud to be a locally owned and operated business serving Newton and the surrounding community. Since opening our doors we have built our company by providing customers with the highest quality products and service, at a fair price. From installs and replacements, to service and repair, our customers can count on our techs to be timely, tidy, and that they will be 100% satisfied with the work once completed. Let us show you the Green Flow Solutions difference, get in touch today! \n-$99 diagnostic fee applied to job when hired

Response time3 hrs
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)

Serving Waltham, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Joe and his Airoc team are true professionals.
They provided reliable,dependable and expert service regarding all paperwork associated with the installations"
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+4

Response time2 days
5 neighbors recently requested a quote
Recommended by96%of homeowners
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FAQs for central a/c service or repair projects in Waltham, 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 Waltham, 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.