


Now part of the
Cotti-Johnson Family!
At Middlesex Cooling & Heating, we've been delivering comfort to homes and businesses across Massachusetts for over 70 years. And our commitment is the same. We are here for you: yesterday, today, and tomorrow.
The health, safety, and peace of mind of our clients and our employees is our top priority. Here you will find the safeguards we're taking to ensure the well-being of our customers and our team during the developing outbreak of COVID-19.
Should you have any questions or concerns about the precautions we are taking, please don't hesitate to call 508-214-4445
Sincerely,
Adam Boccalini, President
Middlesex Cooling & Heating
Our Commitment for HVAC Visits During COVID-19
Safety Comes First
If one of our technicians notices any symptoms of illness, they will be
told to stay home and self-quarantine.
Disinfectant
Our team will be wearing fresh gloves to each home visit as well as carrying
and using hand sanitizer regularly.
Hand Washing
Technicians are required to wash their hands before & after each customer visit.
Distancing
To reduce person-to-person contact, we will not be shaking hands. Our team
will maintain a safe distance during their visit.

Electrician & HVAC Contractor in Marlborough, MA
Reliable 24-Hour Emergency AC & Heating Repair, Installation & Maintenance in Middlesex County
For over 35 years, Middlesex Cooling & Heating, Inc. has specialized in the installation, maintenance, and service of residential air conditioning and heating systems.
Our decades of experience and dedication to customer service qualify us to represent the premier manufacturers in the industry—American Standard, Bosch, Bryant, and Mitsubishi Electric.
We also have highly trained electricians in Marlborough on staff, and offer the complete line of Honeywell-Generac stand-by home generators.
Call (508) 214-4445 or contact us online today schedule fast & dependable service with our electricians or HVAC contractors in Marlborough, MA!
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Contact Our Team
Use our online form or call (508) 214-4445 for same-day & 24/7 emergency service.
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Get Your Free Estimate
We provide upfront pricing and you will know the cost of the job before we start.
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We Handle the Rest
Our technicians are trained, drug-tested and background checked.


Our Customers Say It Better!
Customer Reviews
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Overall they were great and will use again in the future!
“I was able to get an appointment quickly which is always a bonus. He was very prompt to the appointment time and friendly.”
- Erin D. -
We will absolutely use them again and highly recommend them.
“Middlesex was very responsive and prompt to our needs.”
- Jennifer Z. -
He will be the guy I call whenever I need a plumber.
“I can't thank Fred enough for taking the time to give me that advice.”
- K M. -
I highly recommend this company for heating and AC.
“The price I was quoted was the price I paid and the work was done in a timely manner. This is my second experience with this company and I no complaints.”
- Debra H.