Since 1980, Calnan's Energy Systems, Inc. has been helping local homeowners throughout Middlesex County and Norfolk County reduce their carbon footprint by providing quality residential weatherization services that result in overall home energy efficiency. Our specialty is installing Waltham replacement windows and doors in addition to Energy Saving Insulation.
We assist you every step of the way to understand how you can best weatherize your home as well as understand the importance of your entire house working as a system. From windows and doors to insulation and more, your energy savings, health, and comfort are our business. We have completed more than 10,000 projects with complete knowledge and expertise.
We have evolved from a multiple crew company, to a one crew company. This reduction in size has allowed us to deliver the high level of service our customers have come to expect. Direct supervision by the owner on each and every project, as well as family members involved, can eliminate the concern of "Who will be working in my house?"
We assist you every step of the way to understand how you can best weatherize your home as well as understand the importance of your entire house working as a system. From windows and doors to insulation and more, your energy savings, health, and comfort are our business. We have completed more than 10,000 projects with complete knowledge and expertise.
We have evolved from a multiple crew company, to a one crew company. This reduction in size has allowed us to deliver the high level of service our customers have come to expect. Direct supervision by the owner on each and every project, as well as family members involved, can eliminate the concern of "Who will be working in my house?"
Services
Calnan's Energy Systems, Inc. has built our reputation by providing a high quality service and competitive pricing on all of our projects. We are a full service contractor focused on weatherization, insulation, windows, doors, retrofits and more. We have the experience, knowledge, tools and equipment to get the job done right.
We had such a positive experience with Calnan's that we now use them as our weatherization contractor of choice. The work they did was nothing short of excellent. We can ask questions and know we are getting honest answers and ideas that are in our best interests. We are happy to recommend them anytime.
Reviews (10)
Gary Lubin
Dec 15, 2021
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Rob (the owner)came by and emailed me a quote. I thought it was a little bit on the high side and I asked if he could possibly cut it down a little bit and leave a step out. He mentioned it would be in your best interest if you went with my recommendation, or you’ll be calling me back to do something else. He was right! Rob and his team know what needed to be done. We purchased the house December 2020 and there were air gaps in the crawl space. Rob pointed this out and when the wind blew through that space last winter we felt a chill in the sunroom above. I would highly recommend Calnan’s.
Marcia Green
Sep 22, 2021
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Robert Calnan and his crew replaced all the windows in my house and added insulation in the attic. My energy bills were reduced by half. He recently replaced a door that was in tough shape. He and his crew do excellent work, communicate well, leave no mess, and do it all with a smile! I will be hiring him again soon for another project.
Keith Eisenman
Sep 19, 2021
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Positive: Professionalism, Punctuality, Quality, Responsiveness, Value
They gave different options for insulating the rim joistand explained the pros and cons of each. They were personable, unobtrusive and communicative. Despite running into some significant unforseen problems with the job, they stuck to their estimate.
They gave different options for insulating the rim joistand explained the pros and cons of each. They were personable, unobtrusive and communicative. Despite running into some significant unforseen problems with the job, they stuck to their estimate.
Alexia Prichard
Sep 15, 2021
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Rob and his crew’s work was exceptional. His initial consultation gave me a great deal of confidence about moving forward with a difficult construction job, then the actual work was impeccable. Rob organized and handled all communications with vendors (dumpster) and updated me regularly and with great detail. His work was professional, fast, and very clean. He will always be my first phone call for any contracting work I need done.
Beth Golovchenko
Sep 06, 2021
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Laura Meyer
Jul 21, 2021
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The roofing company we hired to reshingle our roof suggested that we consider upgrading the attic insulation, and recommended Rob Calnan. Rob came by the day we called him. He was very attentive to our schedule, and went out of his way to fit us in, and through the entire process was readily available and responsive both to cell phone and email. The work took five days, and after each day we received a call about how things went, and what would be done the next working day. This is a family business. Several of his employees are his own children. He takes great pride in the quality of the work
William Dylewsky
Jul 16, 2021
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Connie Burgess
Jun 30, 2021
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I recommend Calnan's without hesitation. From my initial telephone inquiry to completion of the job, Rob Calnan answered my calls and emails right away. Amazing! We got nine new windows, and it was a seamless undertaking. Rob and his employees took care of every detail and go above and beyond. The staff is unobtrusive, polite, and totally professional. Plus, they leave the place immaculate. Calnan's is a highly professional company. We really appreciated the excellent communication through every step of the process and the completed job is top notch.
James Hadley
Jun 23, 2021
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Erin Grzywna
Feb 26, 2021
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My husband and I hired Rob to replace our front door, which had failed due to water leakage into the frame... and we are so glad that we did! As Rob will tell you himself, he is likely not the absolute cheapest option - but his commitment to "getting it done correctly the first time" was exactly what I was looking for, and really sets him apart from everyone else I talked to. He and his sons were extremely detail-oriented, thorough, and professional; every step of the process was explained/shown to me, and the end result looks and functions great. We will definitely use Rob and his team for other
