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.

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.

Such a terrible set of experiences with HWE. I went through MassSave to get their services:…read moreinsulation and other heat-saving measures, including door jambs, blow-in insulation, and expanding foam in foundational joists. In total they required THREE separate trips, which I'll expand on: 1) Initial visit -- 2‑br, 1‑bath job. I was onsite for the first half of the full day's work, and they were great in the kitchen and living room: they put up plastic sheeting and handled dust/debris carefully. I left them to finish, assuming all was fine. Unfortunately, both bedrooms and the garage were NOT plastic-wrapped as they had been where I was present; they were an absolute mess when I returned (see images). I had moved everything to the center of each room to make it easier to cordon off, but everything -- most frustratingly my bedding -- was covered with dust, drywall particles, and insulation. I don't understand why the don't use a shop-vac while drilling to cut back on the mess. I would have assumed HEPA everything but instead it's just drill and blow insulation. Additionally they used the green-lid 24-hour joint compound on the drilled holes; that compound would be fine alone, but they applied two coats only a few hours apart, which creates too much moisture and causes cracking, something anyone who has used joint compound before would know. That requires much more post-processing sanding and reapplication to get a smooth wall (also shown in another image). Also, many of their styrofoam 3″ inserts used to plug holes protruded well beyond flush with the wall and required complete removal and reapplication. If the inserts were close to flush, a few coats of joint compound would have fixed the elevation, but these protrusions were extensive and made repairs take about three times longer than necessary. I spent many weekday evenings and weekends cleaning and repairing and to this day find pockets of my quarters in a layer of drywall & insulation. -Adobe Energy, an independent verification company, came onsite about two months later. The rep was great, found several cold spots in the walls (well documented), and advised another visit to remediate them, plus noted poor door-jamb installation and a missed foundational joist insulation spot. 2) Scheduling was reasonably responsive. The second HWE crew remediated some of the shoddy work from the first trip (door jambs and joist foam patches). For some reason they didn't fully reference the Adobe Energy photos and drilled many more holes in the patched walls than were necessary. They attempted to use their blow-in insulation machine but said it was non-functional and that they would need to return a THIRD time. I was understandably upset but I tried not to take it out on the reps. They promised an escalated call from a manager that day to reschedule; I did not receive it. I waited until mid-afternoon the next day, then called. The scheduler was empathetic; she initially said the next available slot was three weeks out, which I told her was unacceptable given the circumstances and state of holes in my wall. She said she'd follow up after working on scheduling and, after about an hour, called back to say she could send reps the next day. 3) The third visit finished the blow-in insulation and patchwork. Unfortunately they were NOT given the pictures from Adobe's assessment, I made it clear we wouldn't progress until we could reference the pictures. The rep made some emails/calls and got the pictures, we reviewed and executed. I lost another weekend to joint compound, sanding, priming, and painting. HomeWorks Energy demonstrated widespread incompetence: broken equipment, poor onsite training, and low-quality materials (they even had a duct‑taped blade they were using - see image). Whatever they're billing MassSave clearly isn't going back into operations or equipment. I lost multiple weekends cleaning up their mess, and it's a shame to see a good MA program affected like this. I would warn people to stay away from HomeWorks Energy at all costs and look to other contractors.

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!

I am very disappointed with this company. A few years ago, they did insulation work at my home…read more Their poor installation caused my door to stick and scratch the floor, and their workers also scratched my hardwood floors. I reported it right away -- their staff (Sarah) confirmed it was their fault and even noted it in the account. They sent someone (Jesus), but he only did a poor stain touch-up and admitted the damage was caused by their work. At that time, I was assured the company would take responsibility with either a proper repair or compensation. But the contractor they referred me to never returned my calls. Now, years later, when I followed up, they suddenly claim they are no longer responsible -- despite having admitted fault and documented it. This shows they do not stand behind their workmanship or their word. I even referred my boyfriend to them, believing they were responsible, but I was wrong. Customers should be very cautious -- this is not a reliable company. I only attach one area pictures, some other damaged is not show good on pictures.

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.

These folks came promptly for a no-cost energy assessment and did a thorough job. I'm in the energy…read moreindustry myself and could see the level of technology assisting data gathering was tip top, the technician was knowledgeable and could easily talk through options, and wasnt pushy. There is a lot of rebate money available if you jump through the right hoops, and they knew exactly how to guide me through that. Great experience from some local folks that felt on my side. Kudos and thank you

From the owner: Weatherization, insulation, HVAC upgrades, lighting, smart thermostats, and other energy efficiency…read moreupgrades for multi-family residential properties, homes, and commercial buildings.

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!