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Top-Rated Central a/c installers in Chelmsford - Updated Nov 2026

Avatar for J.Griffin Heating & Plumbing
J.Griffin Heating & Plumbing
4.9(
266
)
Central A/C - Install

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1981

Free estimates

Emergency services offered

"He explained how they would design and install the new furnace and all the zones. He obtained new hot water heater at no additional cost as well as the available rebates. The actual installation was accomplished in one and a half days. Everything was done very professionally and the area left totally clean. He"
Navien
Medford Ma
Malden Ma
Saugus Ma
Andover Ma

+64

Response time11 hrs
3 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Sila Heating, Cooling, Plumbing and Electrical
Sila Heating, Cooling, Plumbing and Electrical
4.5(
5,404
)
Central A/C - Install

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1989

Free estimates

Emergency services offered

Live Your Most Comfortable Life with a Company You Trust. \nWe offer Same Day Service and Next Day Installation! \n \nSila has been the center of delighting homeowners since 1989, with our team of engineers, certified technicians, and system designers that are proud to deliver the highest level of expertise in the HVAC industry. Whether it?s a repair, replacement, installation, or service, we have an unwavering commitment to keeping you and your family comfortable and safe ? season after season. \nWe guarantee satisfaction and are proud to have earned over 7,000 ?A? ratings on Angie?s List and its prestigious Super Service Award!

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+6

67 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Druziako HVAC Inc
Druziako HVAC Inc
4.7(
157
)
Central A/C - Install

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 time11 hrs
16 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for JOYCE COOLING & HEATING INC
JOYCE COOLING & HEATING INC
4.8(
206
)
Central A/C - Install

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1995

Free estimates

Emergency services offered

"Joyce Cooling and Heating installed a new high-efficiency Lennox furnace and air conditioner. The installation looks great and was professionally completed. The furnace is working fantastic and is so quiet we can't even hear it running. We are warm and comfortable all the time and the new high-efficiency design should save us money for many years to come. The technicians answered all of my numerous questions."
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"THE CREW"
Air Conditioners

+4

Response time1 day
16 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Ace Hardware Home Services
Ace Hardware Home Services
4.5(
53
)
Central A/C - Install

Serving Chelmsford, MA and surrounding areas

Approved (Corporate)

In business since 1967

Free estimates

Emergency services offered

"Unique replaced my 20 year old high velocity air handler, condenser, and separate mini-split systems. Overall everything looks and works great! I was impressed by the dedication of their team - working in my attic in 95 degree heat, installing a smart thermostat for me, and even removing/killing a giant wasp nest that was in the eaves! They also accommodated my request to remove the condensers a few weeks before the new install, so I could do some landscaping work. Price was also quite reasonable. Definitely recommend."
Heat Pump
Mitsubishi Hyper Heat
Multiple Ductless Heat Pump Installation
Additional Photos
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+6

Response time1 day
Response rate100%
4 neighbors recently requested a quote
Avatar for Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
4.4(
200
)
Central A/C - Install

Serving Chelmsford, MA and surrounding areas

Approved

In business since 1979

Credit card accepted

Customers say: Super punctual

"Great experience. They answered the phone immediately and were able to book me for a heating Tune Up within a few weeks. The technician, Kevin Lausier, was prompt, and went right to work. He did a thorough job and was informative along the way. Very friendly and helpful. I would definitely hire Milltown again and request Kevin L. Excellent service."
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8 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Granite State Refrigeration Services LLC
Granite State Refrigeration Services LLC
5.0(
10
)
Central A/C - Install

Serving Chelmsford, MA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

"Granite State Refrigeration services did an excellent job with my Mini Split install. I called the owner for a quote and he was very responsive and prompt. When at my house he explained my options based on my needs, wants and budget. He was also very knowledgeable about the products that he installs. I hired him pretty much immediately and he worked around my hectic schedule to have the unit in and running as soon as possible. I feel like a got a quality unit for a fair price and install went smooth.. I would recommend Granite State refrigeration to anyone who needs this type of service."
Living Room Unit a 12K BTU
The 2 Zone Outdoor Unit
2 Outdoor Units
Heating & A/C Project
Heating & A/C Project

+56

Response time5 days
Response rate100%
5 neighbors recently requested a quote
Avatar for ENDLESS ENERGY NEW ENGLAND, INC.
ENDLESS ENERGY NEW ENGLAND, INC.
4.7(
20
)
Central A/C - Install

Serving Chelmsford, 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
211 neighbors recently requested a quote
Recommended by70%of homeowners
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Showing 1-10 of 202

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