Top-rated central a/c service or repairers.

Get matched with top central a/c service or repairers in Chelmsford, MA

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Central a/c service or repairers in Chelmsford

Avatar for JOYCE COOLING & HEATING INC
JOYCE COOLING & HEATING INC
4.8(
206
)

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"They were very professional and thorough. During the initial service visit, they did a great job diagnosing the problem and attempting to fix the unit. Since it was very old, we decided to install a new system. They were very busy, so we had to wait a few weeks for the new install. Unfortunately, they showed up a day late due to a scheduling error. They're prices are very good. If it weren't for the scheduling error, they would get all A's. I will definitely use them again."
Additional Photos
Additional Photos
Additional Photos
"THE CREW"
Air Conditioners

+2

Response time1 day
5 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Druziako HVAC Inc
Druziako HVAC Inc
4.7(
157
)

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I recently bought a house and needed a new furnace and I wanted to add central AC to my house. I have a friend who has been a contractor for 20 plus years in the town I moved to. I asked him who he uses, he said he only uses Druziako. I called them up and they came out gave me all my options and advised me on the best way to add duct work etc. They gave me a date they would be there and said it would take 2 days to complete the install. They showed up on time. They finished it in 2 days. Guys were professional and clean. The whole project came out better than I expected. I couldn't be more happy. I would recommend them to anyone. I would also recommend central AC to anyone. It's a nice gift to give yourself :)"
Aprilaire Dehumidifier
Attic Air Handler
Duct Cleaning before and After
Attic Ductwork
Aprilaire Humidifier

+3

Response time12 hrs
19 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for NETR Inc
NETR Inc
4.7(
78
)

Serving Chelmsford, 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
Additional Photos
Additional Photos

+9

31 neighbors recently requested a quote
Recommended by91%of homeowners
Chambers Heating & A.C. Service
4.5(
51
)

Serving Chelmsford, 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

3 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(
5,398
)

Serving Chelmsford, MA and surrounding areas

Approved (Corporate)

In business since 1989

Free estimates

Emergency services offered

"Terrific experience. Scheduling was easy. My technician, Guy, gave me a call ahead of time, hit the time he said he'd be here and was courteous and efficient. I ran a large mechanical contracting business for years so understand this business. Guy ran through his checks on what is a fairly complex home system. He pointed out problems that were minor, major, or had the potential to be major. We discussed options and timing. Since our system is old, it will be difficult to repair some of the parts and pieces while others would be fairly standard. We may want to look at a new system this summer to avoid a major problem during a future heating season. I will definitely be talking to Sila."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+6

Response time2 days
73 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"I had originally thought that a high velocity mini-duct central a/c system was the only option for my Victorian home with baseboard heating. But when Joe Carnevale from Airco explained the benefits of a multi-zone slim-duct system with concealed air handlers in the attic to cool the second and third floors and a conventional system tied to existing (unused) floor registers on the first floor, I was intrigued. After rebates and tax credits (which aren?t available for high velocity systems) the cost was extremely competitive and the fact that the system has four individually controlled zones means that I can adjust the cooling levels to keep operating costs lower. The installation was a little tricky as I asked (owner) Steve Duarte and his crew to run the refrigerant, electrical, and condensate lines through an unused chase to the second and third floors rather than affix a conduit to the outside of the house (which wouldn?t have been allowed due to my home?s historic designation.) The work was done efficiently and with practically no disruption to the day-to-day living that went on during the installation. The left the house and basement very clean. I have been very satisfied with the system?s performance during the several heat waves we?ve experienced this summer. All in all it was a very professional job from start to finish and I would highly recommend Airco Home Comfort Services to anyone considering central air conditioning, and in particular to owners of older homes without existing ductwork. 

"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+4

Response time2 days
5 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
4.4(
200
)

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1979

Credit card accepted

Customers say: Super punctual

"Overall, I was pleased about working with Milltown. There was a slight communication issue, but I understand that can happen from time to time. The technician who performed the service was extremely nice and knowledgable."
Additional Photos
Additional Photos
Additional Photos
11 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Precision Plumbing & HVAC, LLC
Precision Plumbing & HVAC, LLC
5.0(
23
)

Serving Chelmsford, MA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: Quick response

"Marcin was very professional and attentive. He was great at communicating and was very quick to respond. They removed an old hot water tank and installed the new tankless system. I would highly recommend his services. Looking forward to working with them again in the future!"
Response time2 hrs
Recommended by100%of homeowners
Avatar for Unique Indoor Comfort Heating & Cooling
Unique Indoor Comfort Heating & Cooling
4.5(
53
)

Serving Chelmsford, MA and surrounding areas

Approved (Corporate)

In business since 1967

Free estimates

Emergency services offered

"Diagnosis and repair were straightforward and the talented Mike, who has done other great work for us on our ACs, had a replacement pump in his truck. Swapped over in under an hour. Cost of the repair was quite high, mainly due to very high price they charged for the pump. A Taco pump that I could buy for $175 was priced on this repair at more than $500. I get that it was an urgent situation and I’m happy to pay reasonably for the response but that mark-up bothered me. I called the office, had a long talk with the owner; sadly, she offered no consideration at all. Yes, it’s hard to find and keep skilled techs, but now seems that most HVAC firms have a business model like a car dealer’s service dept, far more corporate, less flexible or customer-considerate."
Heat Pump
Mitsubishi Hyper Heat
Multiple Ductless Heat Pump Installation
Additional Photos
Additional Photos

+6

Response time1 day
7 neighbors recently requested a quote
Recommended by88%of homeowners
Avatar for Village Home Services
Village Home Services
4.8(
16
)

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1978

Emergency services offered

Warranties offered

"Village Home Services understood our unique need, set a fair price and showed up ahead of time. Communication was great throughout. Their technician, Scott took his time to carefully assess and carry out the job. The result was exactly what we needed. We are very happy with the outcome!"
Response time12 hrs
Response rate96%
5 neighbors recently requested a quote
...
Showing 1-10 of 208
FAQs for central a/c service or repair projects in Chelmsford, 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 Chelmsford, 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.