Endless Energy recently installed our new HVAC system, and I couldn't be more impressed with the…read moreentire team. Garret, Gavin, Keith, and Rich handled the installation and did an exceptional job. They were professional, knowledgeable, and took the time to walk me through everything--from how the system works to setting up the thermostat and even how to replace the filter. Their workmanship and communication were top-notch. I also want to recognize Nick and the team working behind the scenes. Nick has helped us through our no-heat situation,put together our proposal quickly, and arranged a weekend installation to make sure we weren't left without heat. His coordination and responsiveness really stood out. Every part of this experience was handled with care and professionalism. I would recommend Endless Energy to anyone without hesitation. Todd R

Endless Energy installed a Fujitsu heat pump system in my home in October 2022 through the Mass…read moreSave program, and it has never worked properly since day one. From the start, the system constantly shut down and threw error codes. We were actually told by their team that shutting off power to our entire house for 30+ minutes to reset the system was an acceptable solution--something we had to do multiple times per week (and sometimes multiple times per day). That alone should have been a huge red flag. Winters were even worse. We haven't been able to use it at all during the coldest months and were told that just happens in New England winters. We've been forced to rely heavily on expensive oil heat while still paying for this system. They attempted a few fixes over the first couple years, including installing a surge protector, but nothing ever solved the issue. The system continued to fail repeatedly and has now been completely unusable since December 2025. We recently had an independent electrician evaluate it, working directly with Fujitsu, and the system now needs a new compressor and control board. Even more concerning, it appears likely that the root issue may stem from the original installation or wiring--something that was questionable from the start. The installers often seemed inexperienced and had to call others for guidance several times during the install. To make matters worse, Endless Energy now wants to charge us just to come out and diagnose a system they installed that has never worked correctly. They are apparently under new ownership with significant staff turnover, and at this point have been completely unwilling to take responsibility or meaningfully help resolve the situation. After 3+ years of issues, missed work for service calls, ongoing loan payments, and thousands spent on backup heating, I have zero confidence in their ability to fix this. I would strongly caution anyone considering using Endless Energy.

I had my whole house reinsulated by HomeWorks Energy and despite a rocky start due to lack of…read morecoordination and communication between HomeWorks and MassSave, the HomeWorks crew assigned to this unusually complicated and complex project was excellent. The crew leader was an attentive and excellent communicator, explaining what was being done each day and reviewing what had been done at the end of the day. His crew was very pleasant, efficient and accommodating. The crew was Truck #40.

GO ELSEWHERE! Simply put you will get the B Team (at best) and all the forms of sloppiness that…read moregoes with it. Some here have gone into detail as to how you can screw up a basic insulation job, so I won't repeat it. The number of screw ups and amateur work quality was more than I've ever seen in 30 years of home ownership and contractors work. The highlight: they core drilled through structural 2x4s inside the wall, under window framing. Who the F does that?! Everything from communications, to quality of work, to damages, to explanations, to billing / paperwork, slop/mess/clean up, it goes on. Ghosting communications to the office and field lead. Yes, they came back to fill in the various areas where they put NO insulation at all in several wall cavities...but, really, how do you just miss that unless you've been on the job for about a week. The only reason I got them to do that was I got a temperature gun that showed several places where it was a cold wall... They came with a IR image gun and verified various empty areas. What kind of training and qualification do they go through? and oh yea, one of the crew wanted to sit in my hallway for long periods of time, because his feet were very cold and he had nothing to do. When he was 'working' he was on his phone talking and texting non stop. I am not making this up. On each of two crews, there was one person of the three that was competent and able to communicate reasonably well, and two who were not. They meant well, but just not up to the task. Find a real insulation company with a real crew of adults.

Shawn Hourihan was very thorough and knowledgeable with my Mass Save assessment…read more He really came up with some good ideas for my situation. Glad that i scheduled it, this was very helpful Thank you Shawn !

Chad performed our whole home energy efficiency assessment. He gave me knowledge on how Neeeco and…read moreMass Saves programs work in relation to our upcoming changeover to a whole-home heat pump. Chad also did a great job explaining how certain insulation improvements vastly improve the heating and cooling systems. Moreover, Chad was professional, thorough, and an effective communicator. Thank you!

We have tried multiple times to get ahold of this company to complete the refund process and they…read morehave not returned emails or calls. Our project is finished and they seem to have vanished.

I'm a home builder, have used A9 twice now on my projects. Their fee pays for itself in rebates,…read moreand they keep track of everything, kind of a no brainer. My projects have had very good HERS ratings from their testing, probably because we build very carefully. Plus Free LED bulbs for the project!! MA Thenen & Co. House builders

I would like to thank Energy Geeks for doing an outstanding job insulating my attic as they were…read morevery professional and courteous. Foreman Michael, Casey was very hands-on and directed everyone to satisfy all my needs above and beyond. We have already witnessed significant positive results since they performed the job. I would like to thank them for their outstanding work, and would recommend them to anyone.

I would highly recommend Energy Geeks. They (a team of three) added insulation to the attic and…read moreseveral weatherization measures. They arrived on time, were very personable, answered my questions and did a great job.

We had the Worthmore group come insulate our attic through the MassSave energy audit program and…read morewere very impressed. The were very communicative before the project, calling twice to confirm and ensure the address and street directions were correct. They showed up on time and did excellent work getting everything insulated and gaps blocked. The blower test was ~2000 for a 1650sqft home (1:1.25 ratio) before and 1300 after (1:0.79 ratio) the work which is great for a 35 year old home. They kept the house clean by using a lot of drop cloths for walking and even double insulated the side door that we rarely use to get our savings even better. I highly recommend the Worthmore Group and look forward to working with them in the future!

The house is being resided and the amount of insulation blocking the soffit vents was amazing…read more These guys made no attempt whatsoever to correctly insulate that attic. The siding guys have been busy replacing a lot of rotted wood from ice dams. I'm trying to figure out how to upload pictures to this review so you can see for yourself.

I really wanted to find someone to air seal my house who would take the time to do it right vs…read more just walk around with a can of great stuff which I could have done myself. Mark took whatever time was necessary to air seal in our unconditioned attic, install baffles, and also ensure that the insulation which was poorly placed on the surface was cut down properly so it could be in contact with the attic floors. I don't know how much energy savings air sealing will do for me as my newer house was already pretty comfortable before embarking on this project, but I am confident that this project has been completed in the most competent manner possible. I did receive quotes which were a lot less than Mark's, but still chose to hire Mark for the job since he seemed like he was going to take the time to do it correctly. After seeing how big a job it was, I really don't feel confident someone would have been able to do the job right at those lower quotes. The project ended up being about 4.5 days of work where Mark had to crawl through insulation for many hours to get the job done.

Mark did a fantastic job insulating and sealing up our house! He walked us through everything we…read moreneeded to get done and didn't pressure us to do anything we didn't want to do. I can already tell a difference in how the house feels. Mark was so great I'm sad the job is already finished! I'd recommend Airsealing America to anyone looking to seal up their house!