Top-rated window a/c unit installers.

Get matched with top window a/c unit installers 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.

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

Avatar for Phalan Construction & The Handyman
Phalan Construction & The Handyman
4.8(
353
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Emergency services offered

Warranties offered

"Bob is a consummate professional with high work standards, great ideas, and tons of experience with just about any kind of build or repair job. He gets the job done right, and explains each step of the way- along with his reasoning and price options. He’s not the cheapest handyman, but you’ll find you are quite happy to pay slightly higher prices because you understand that he is dedicated to a quality project outcome, no matter the size of the job. We’ve had Bob help us with installing insulated ductwork through our attic to outside from 2 bathroom exhaust fans, install a sliding shower door, and install an attic exhaust vent through a side wall, and repair extensive rot on 3 bedroom window sills and connected rot repair under exterior wood siding. We are hiring him again!"
Additional Photos
Additional Photos
Recent Basement Alteration
2
Recent Bathroom

+33

1 neighbors recently requested a quote
Recommended by82%of homeowners
Avatar for Mead Handyman Service, LLC
Mead Handyman Service, LLC
4.2(
160
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

Approved

In business since 2015

Free estimates

Offers commercial services

"Matt does an amazing job. He does anything from small to large jobs for me. He just recently replaced all my deck railings and they look amazing. He has helped me out with toilet installation, moving things, painting, power washing, installing appliances, replacing smoke detectors, installing faucets, just to name a few. He has done jobs for the last six years for me and I will continue to use him forever! Dependable, honest, fair pricing, just an overall amazing guy! I recommend him 10/10."
Gallery
Gallery
Gallery
Recommended by78%of homeowners
Avatar for Joseph Downey Small Job Specialist
Joseph Downey Small Job Specialist
4.8(
171
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

In business since 1985

Free estimates

Emergency services offered

"The projects Joe did were to: replace and cement in a basement window with a custom sized double-pane basement window, installed three storm windows to cover leaded glass windows, replaced rotted trim at three locations, cleaned gutters and fastened down a downspout, and replaced a rotted window sill in the garage. I felt very comfortable having Joe and his work crew do this work."
Dumpster in place at compactor
Area how dumpsters locked into place
Finished walls with steel bumper plates
Additional Photos
Additional Photos

+14

Recommended by100%of homeowners
Derek James Dematteo
4.9(
21
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"I had Derek add power to configure additional external Ring cameras to better secure my home before and after an unexpected and uninvited tresspasser invaded my home as well as fix and install additional Ring doorbells. He gets the job done and does not waste any time. I would definitely call him first and hire him again. He responds and will fit you in. He is very busy but that is because he is that good."
Response time5 hrs
Recommended by85%of homeowners
LF Tighe Plastering LLC
4.8(
29
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

In business since 1995

Free estimates

Emergency services offered

We have the experience and dedication to get the job done right! Specializing in Drywall and Plastering services; We guarantee your satisfaction, and we won't leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click for your estimate today!

Drywall Project
Drywall Project
Drywall Project
Drywall Project
Drywall Project

+7

Recommended by92%of homeowners
Avatar for JMC Painting
JMC Painting
5.0(
23
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

In business since 1993

Free estimates

Emergency services offered

"My wife and I needed some major paining done to our new condominium unit. The walls are 22’ high so we needed someone with experience. We called JMC for an estimate and Justin showed up, took measurements and assured us it would be easy for him and his crew to get it done in two days. We trusted him because you know within 20 seconds of meeting him that he is a man of integrity. It was the best decision we made because Justin is not only thorough, prompt and efficient but he’s also one the nicest people we’ve ever met. He and his crew are so considerate and professional that I know we will never use another painter again. We could not recommend JMC Painting more! They are the best. Thank you Justin and your team for making our place look brand new! Mike & Krissy Roberts"
Painting - Exterior Project
Painting - Interior Project
Painting - Exterior Project
Painting - Exterior Project
Painting - Interior Project

+450

Recommended by100%of homeowners
Avatar for AJF Construction Co
AJF Construction Co
4.8(
68
)
Window A/C Unit - Install

Serving Chelmsford, MA and surrounding areas

In business since 2000

Free estimates

"Tony is, without a doubt, the best contractor I have dealt with over the past 20+ years as a homeowner! I needed work done on a couple different areas of my house last Fall, one due to damage cause by an exterior water leak. Tony got back to me right away (none of the other contractors even bothered to return my calls!), was more than accommodating when it came to my work schedule, showed up on time, and completed the work exactly as promised. He walked me through everything that needed to be done when he first came over to provide the estimate, and as he was making the repairs. He takes a great deal of pride in his work, and it shows in the end results! I recently ran into another problem, contacted Tony, and not only did he come over that very same week to take a look, but he performed the repairs right away! I could not have been more pleased! If you are looking for an honest, reliable contractor you can trust to get the job done, I would *highly* recommend AJF Construction! I would not hesitate to contact Tony again for any work I need done in the future!"
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+63

Recommended by96%of homeowners
...
Showing 1-10 of 171

The Chelmsford, MA homeowners’ guide to window a/c unit installations

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