Calnan's Energy Systems Inc.

Founded 1980 • With Angi since October 2005

** Angie's LIst Super Service award winner in Insulation every year since 2008**Calnan's Energy Systems Inc. has been in business for 40 continuous years and has more than 10,000 completed projects. Specializing in Energy Saving Insulation, Window and Door Installations! We have evolved from a multiple crew 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?" Cost is determined by the job and all estimating is performed by the owner. No travel charges. We are proudly not a Mass Save contractor.

Awards and Badges

Angi Certified

2022 Super Service Award

Images

Remove existing fiberglass as necessary Air seal and install fiberglass in each bayInstall Tyvek HomeWrap over insulated bays

Verified Reviews

4.9

(169) Verified Reviews

Ratings Distribution

5

158

4

3

3

1

2

1

1

6

Rating Details

Price
4.7
Professionalism
5.0
Punctuality
5.0
Quality
5.0
Responsiveness
4.9

Read reviews by category

insulation (158)window replacement (16)door installation (15)home energy audit (4)general contractors (2)basement waterproofing (2)siding companies (1)
Showing 1-25 of 169 reviews
Paul D.
5.0
03/13/2023
We needed to insulate a section of our attic to prevent ice dams. We met with the owner, Rob Calnan, who was very knowledgeable, professional and friendly. We received a quote that was reasonable and once we decided to use this company, they were able to schedule the work in a short period of time. They came as planned, on time, were professional, polite, neat and clean. They completed the job on schedule. We were very pleased with their work. We don't actually know if it was successful yet, because we have not had enough snow to cause ice dams. We will have to wait to see if the insulation has solved the problem.
Description of Work
Insulated a section of our attic with a combination of blown-in insulation and solid sheets of insulation.
Category
insulation
Cost
$3,640
Hire Again?
Yes
scott W.
5.0
06/18/2022
Rob was a great communicator and his promptness and knowledge were one of the main reasons we went with him over a slightly lower estimate we got. His sons did a good job of doing the work we required, which was messy work, and they left the place in pretty good shape with just some leftover bits of insulation here and there. If I have any additional insulation needs, Calnan would be my first call.
Description of Work
Insulation around the perimeter of our basement
Category
insulation
Cost
$2,100
Hire Again?
Yes
Henry C.
5.0
04/28/2022
Excellently, superbly, wonderfully, and without a speck of grief. What a performance by Calnan Energy. I am 75 years old, and a homeowner since 1978. I have never experienced such an efficient and trouble free experience with a contractor. What a supreme job done by Calnan replacing my bathroom window. If you need a contractor, take my advice and hire Calnan Energy.
Description of Work
Replace bathroom window
Category
replacement windows
Hire Again?
Yes
Alex A.
4.0
03/01/2022
The experience working with Robert and his company was great overall. Robert was very responsive, informative, and worked hard to get the job done. As far as service and price goes, 5 stars. I put 4 stars overall only because the new insulation did not totally solve the problem we were having, which was one bedroom in our house which was constantly cold. It's definitely better, but not as good as we hoped. This is not Calnan's fault, they performed the work as asked, just that clearly the problem lies elsewhere. I would still use them again.
Description of Work
Replace insulation in one wall of house
Category
insulation
Cost
$3,544
Hire Again?
Yes
Ann B.
5.0
02/08/2022
Rob Calnan was recommended by a neighbor. I thank her every time I see her! I met Rob a month ago and he insulated my basement last week with closed cell spray foam. He has every quality you would want in a contractor and more. He is a perfectionist and a great communicator, you will never be in the dark about anything! He is also a great human being, I am glad to have Rob in my contacts going forward. He also recommended a great finish carpenter to complete my basement project. I'm in good company and good hands!

Images

Review for Calnan's Energy Systems Inc. - 105 Harvard St, Waltham, MA - 39623682Review for Calnan's Energy Systems Inc. - 105 Harvard St, Waltham, MA - 39623682
Description of Work
Basement insulation
Category
insulation
Hire Again?
Yes
William D.
5.0
07/22/2021
I hired Rob to add insulation to my attic. He and his team were extremely professional and thorough. The work was done in a timely manner and completed as promised. I would hire him again.
Description of Work
Additional insulation in attic
Category
insulation
Cost
$12,000
Hire Again?
Yes
Laura M.
5.0
07/18/2021
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 that they do under difficult work conditions, squeezing up through narrow openings into cramped, dark attics with little headroom. Rob was very knowledgeable, and enthusiastic about sharing his storehouse of knowledge about insulation. He educated us. He has been actively involved in developing standards in the insulation industry. Three months after the job was completed, when we emailed on the eve of solar panel installation to ask about whether the solar installers should know anything about the insulation, he responded immediately, and said that the solar installers should call him with any questions. We are very impressed by his commitment to his work. The insulation has made the house noticeably cooler.
Description of Work
Attic insulation
Category
contractors, insulation
Hire Again?
Yes
Erin G.
5.0
02/27/2021
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! 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. As Rob will tell you himself, he is likely not the absolute cheapest option out there. However, I was looking for someone who was communicative, professional, and most importantly, takes pride in his work... and he proved to me that he was all of those things. We will definitely use Calnan's Energy Systems Inc for other jobs in the near future... highly recommend!
Description of Work
Front door replacement
Category
doors
Hire Again?
Yes
Michael C.
5.0
01/30/2021
Rob and his team are the very best! Over many years they've insulated a small room in our basement that used to have an oil tank, now used for a wine cellar. More recently, helped with our storm doors, winter and summer panels. And in 2020 new insulation blown in from roof down through our full basement, 4 levels. Our 1893 boarding house is now tight and sound. The gas company earlier in Jan. 2021 sent, along with our bill, a rating that we are 14% below "your most efficient neighbors" (100 in surrounding area) for gas usage. Our toilet no longer freezes in cold weather. You will not go wrong with Calnan's Energy Systems. They come on time, work hard, and were always masked. Professionals and all very nice guys. Mike and Jane, Belmont MA
Description of Work
full house blown in insulation with Mass energy program
Category
insulation
Cost
$8,800
Hire Again?
Yes
Doug S.
5.0
01/14/2021
In estimating the project, Rob Calnan was very detailed and professional and immediately responsive to my questions. The door had to be ordered to custom dimensions and he was communicative about the delivery schedule. He and his crew did a careful, thoughtful job in installing the door. His estimate was accurate and we are happy with the work he did.
Description of Work
Calnan's Energy Systems replaced our basement bulkhead door replaced
Category
doors
Hire Again?
Yes
Ben P.
5.0
11/05/2020
Had a great experience with Calnan Energy Systems. On our first call Rob was very generous with his time and expertise. Our job was a little nontraditional; we have an unfinished basement that we're using for a workout space, but wanted to prevent the debris fiberglass batts in the ceiling from getting into the air. The solution was to use Tyvek to seal up the ceiling. A bit of an oddball job, but I understand they've done this many times. Rob's and his crew were a pleasure to work with and did a very professional and clean job. If I have any other insulation-related jobs they'll be my first call.
Description of Work
Encapsulating fiberglass batts in unfinished basement ceiling
Category
insulation
Cost
$2,500
Hire Again?
Yes
Vicki L.
5.0
10/15/2020
We had a terrific experience with Calnan Energy Systems. Rob was an invaluable resource as we sought out insulation contractors and performed a full insulation upgrade on an old Victorian during a major renovation. Rob enrolled us in an energy savings program, performed the preliminary energy audit, and guided us on what to look for in a top notch local insulation company (since he was unavailable to do the work himself). Once the wall insulation work was completed his team arrived to seal our basement perimeter and openings from the basement to the interior. Rob's crew was professional, thoughtful, and efficient. They slipped in, got the work done, and cleaned up perfectly. And after the final assessment was completed it turns out that the energy program will benefit us enormously. Thanks again, Rob, for your expertise and guidance.
Description of Work
Energy Audit, Insulating Basement
Category
insulation, basement waterproofing, energy audit
Cost
$3,600
Hire Again?
Yes
JAMES P.
5.0
10/01/2020
Mr. Calnan and his crew did a great job upgrading our attic insulation, which involved several different tasks. Everything was clearly explained to us. The workers showed up promptly, everyone was friendly and polite, and they took great care to clean up after themselves. Recommended without reservation.
Description of Work
Attic insulation
Category
insulation
Cost
$5,000
Hire Again?
Yes
Laura S.
5.0
06/30/2020
It went very well. He was great to work with and was very knowledgeable about older homes, which was very helpful. I highly recommend him.
Description of Work
He insulated my attic and 1 wall in the house and later did some window installation.
Category
insulation, replacement windows
Hire Again?
Yes
Carol L.
5.0
06/25/2020
Job was done quickly and professionally. I highly recommend them for any project!
Description of Work
Bulkhead Door Replaced
Category
doors
Cost
$2,796
Hire Again?
Yes
Michael C.
5.0
02/22/2020
Less than an hour, pretty simple with Rob. Now thinking of hiring him to insulate house.
Description of Work
new latch for rear storm door, gratis; showed me how to reconfigure screens and glass panels in both doors.
Category
doors
Hire Again?
Yes
Robert N.
5.0
12/11/2019
Smoothly, pleasantly, cleanly, as contracted.
Description of Work
Replace exterior door
Category
insulation, doors
Cost
$2,500
Hire Again?
Yes
Chris F.
5.0
11/23/2019
Rob was very helpful in assessing how to address our issues with water/air getting through our wall. He was professional, friendly, honest with his quote, and got the job done in a timely manner. I would definitely work with them again.
Description of Work
Window flashing and air sealing
Category
insulation
Hire Again?
Yes
Jeffrey S.
5.0
11/12/2019
Great! We have a 140-year old Victorian with third floor knee walls, very hard to insulate. Rob and his sons did a thorough job of applying high R-value insulation between the rafters, so we will have a cold roof to prevent ice dams in the future. Also had old casement windows in the basement that were falling apart, and they rebuilt four windows with new frames that look like cabinet work. Reasonable prices, great attitudes -- can't recommend more highly!
Description of Work
Attic insulation, basement casement window replacement
Category
insulation, replacement windows
Cost
$22,000
Hire Again?
Yes
Ian P.
5.0
09/03/2019
Rob and his team did an excellent job and worked long days to complete the job within the timeframe expected. They were communicative and explained options to us as they were working. When a few challenges came up they stuck to the originally indicated price and charged only for parts, and not for the additional labor required. I got the sense that he took a real pride in doing an excellent job and we were very happy with the job done, as well as the attention to details and with the high level of communication shown throughout the job.
Description of Work
Replacement of front door
Category
insulation, doors
Cost
$3,000
Hire Again?
Yes
Jinho L.
5.0
07/31/2019
Rob and his sons did a great job in replacing our home's very old front door with a new fiberglass door. The work turned out to be very challenging and it took full two days (more than originally quoted). His team completed all work very professionally without charging additional labor cost. Billing was clear and as expected (no surprise) with reasonable cost of extra materials. We are very pleased with the completed work.
Description of Work
Front door replacement
Category
insulation, doors
Hire Again?
Yes
Karim S.
5.0
02/05/2019
Unbelievable professionals. On time, on budget, spotless.
Description of Work
Needed to have fiberglass insulation removed from one part of basement. Mice had made it their home. Then needed to have the entire perimeter sealed and insulated.
Category
insulation
Cost
$1,500
Hire Again?
Yes
Emre G.
5.0
10/29/2018
The workmanship was excellent. He took measurements, custom ordered the windows and installed them within a week. Would definitely work with again.
Description of Work
Installed 3 windows in basement.
Category
replacement windows
Cost
$1,000
Hire Again?
Yes
Emre G.
5.0
10/29/2018
Rob and the team were great to work with. Rob is extremely knowledgeable when it comes to insulation and energy saving. He was always available to answer questions, showed up when he said he would and kept us informed throughout the whole work. Rob and his sons do excellent work. They do not cut corners and are extremely detail oriented. They went beyond my expectations in terms of their cleanliness and attention to detail. If you are planning to get any insulation work done, I highly recommend you give Rob a call.
Description of Work
Installed top to bottom insulation to our house. The work included insulating and sealing basement perimeter, blowing insulation into walls and insulating attic space.
Category
insulation
Cost
$13,000
Hire Again?
Yes
Edwin K.
5.0
09/12/2018
The owner was very knowledgeable and discussed the options. He was willing to give me options that were services that he did not provide, but they were the best options for me, even if it cost him some business. For that, I want to give him a good review based on his knowledge and professionalism. He will find the right option for you.
Description of Work
Basement Insulation
Category
insulation
Hire Again?
Yes

Phone

Address

105 Harvard St Unit 5

Waltham, MA 02453

Monday
8:00 AM - 5:00 PM
Tuesday
8:00 AM - 5:00 PM
Wednesday
8:00 AM - 5:00 PM
Thursday
8:00 AM - 5:00 PM
Friday
8:00 AM - 5:00 PM

Website

http://www.calnansenergy.com

Other Information

Services Not Offered

window and door repairs, Interior Doors

Payment options

Check
Licensed
Trade License Number
108453
Trade License Locale
Massachusetts
Trade License Authority
Massachusetts: Home Improvement
Trade License Expiration
08/17/2024
Insured
All statements concerning insurance, licenses, and bonds are informational only, and are self-reported. Since insurance, licenses and bonds can expire and can be cancelled, homeowners should always check such information for themselves.To find more licensing information for your state, visit our Find Licensing Requirements page.

FAQ

Calnan's Energy Systems Inc. is currently rated 4.9 overall out of 5.

Calnan's Energy Systems Inc. is open:

Monday: 8:00 AM - 5:00 PM

Tuesday: 8:00 AM - 5:00 PM

Wednesday: 8:00 AM - 5:00 PM

Thursday: 8:00 AM - 5:00 PM

Friday: 8:00 AM - 5:00 PM

Calnan's Energy Systems Inc. accepts the following forms of payment: Check

Yes, Calnan's Energy Systems Inc. offers free project estimates.

Yes, Calnan's Energy Systems Inc. offers eco-friendly accreditations.

Yes, Calnan's Energy Systems Inc. offers warranties.

Calnan's Energy Systems Inc. offers the following services: Insulation. Energy Efficiency Auditing. Windows. Doors - Proudly not a Mass Save contractor