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"Carmine did an excellent job removing and installing the hot water heater. It was Sunday afternoon and he came over within an hour, two hours later the job was completed. Really appreciated his help. Great guy, knows his business and was extra careful as if it was his own house to make sure nothing got damaged while transporting the old and new tanks. I’ll definitely call again for any more plumbing jobs. Thanks again"

"Anthony was fantastic. 10/10 great service great personality."

"Excellent job??????. Excellent customer service and very courteous. Left work area very clean and tidy."

"It’s been just shy of year since we had Green Sun Energy Services design and install a solar array and a standby generator at our home. I’d been thinking about “going solar” for some time. I spoke with one or two other solar-install companies before speaking with Green Sun. Glen, Green Sun head-honcho, came to my home and discussed the technical and economic aspects of the solar array. In addition to being very personable, I found Glen to be professional and exceedingly knowledgeable. I liked that fact that rather speaking with a sales rep, I was speaking with an owner of the company. And I took comfort in the fact that Green Sun is local (at least to me) and has been around for a number of years, has done many solar installs, and has several regular crews of installers. After surveying the attic and taking some measurements of the roof, Glen worked up an estimate for a solar array and standby generator. The estimate detailed what the system would look like, what it could do, and what it would cost. A further and very important consideration for me was what the solar array would look like. Having just completed a significant renovation to the exterior of our home, including a nice new roof, I didn’t want to compromise the look we achieved. In fact, I didn’t want to see the panels at all, at least from the front or sides of my home. Glen assured me that I wouldn’t. In fact, unlike some other solar-install companies, it turns out that Green Sun always sets the panels back at least four feet or so from the side edges of the roof. They “get” it. Since the payout looked good and I was very comfortable with Green Sun and Glen, we decided to proceed. Since part of my project was a standby generator, the electrical work was a bit more involved. Glen’s electrical contractor was amazing. He was easy to work with and really sweated the details. He showed up when we he said he would, and did all the prep work he could in anticipation of the actual solar-panel install and generator delivery. He obviously took great pride in his work, making sure everything was neat and expertly done. No less impressive were the solar-panel installers. Per the layout, they moved a roof vent and took the time necessary to line-up everything in accordance with Greg’s plan. The install proceeded without a hitch and looked great. Inspecting the attic, I couldn’t find a single fastener penetrating the roof deck; every screw/nail was sunk into the rafters. As promised, no part of the array is visible from the front or sides of the house. In fact, in my situation, the solar panels aren’t visible until I stand quite a distance away from the house in the backyard. Glen’s plumbing contractor showed up to plumb the stand-by generator as scheduled. Like the electrical, everything was done professionally and very neatly. In fact, when the inspector came by to perform his inspection, he commented on how neatly the unit was plumbed. As noted at the outset, my system has been operating for about a year. Everything started up without issue. My monthly electric bill is just under $3.00 per month; that’s not for usage –it’s a minimum that must be paid─ I have actually been banking electricity every month, for which I will receive a check/credit from my electric company at some point. I have cashed in the solar credits (SRECs) that I receive every few months. Between the SRECs, my $3-a-month electric bill, and the 30% federal tax credit, I’m on track for a 6-year or so payout. Just a couple of weeks ago, during the April Nor’easters, the power in my neighborhood went out for 4-5 hours. But not at my house; the generator kicked on in a few seconds. My only continuing awareness of the outage was how dark things were outside and the audible, but inoffensive drone of the generator. Bottom line, I couldn’t be more satisfied. The few questions I’ve had have been answered promptly and cheerfully by Glen or his business partner Chris. If you are thinking about “going solar,” or even just getting a standby generator, you really ought to give Glen at Green Sun a call. By the way, I understand that the federal tax credit is being phased out over the next 4-5 years, so if you are interested, you probably should move on it. I realize that this might sound like an “ad,” not a review, but it isn’t. I have no connection with Glen or Green Sun other than being an extremely satisfied customer; this review is simply my way of saying “thank you” to Green Sun."

"They are great. I like them a lot and I cannot recommend them enough."

"Super easy & got the job done very quick. Nick was very responsive and easy to work with (and actually suggested I pursue a cheaper alternative that I initially asked for, which never happens). Strongly recommend and would use again!"

"This past weekend I had a bad experience. The short story is that an A. J. Perri technician diagnosed my furnace problem and wrote me an estimate for $1,600, parts and labor. It turns out my furnace had a different problem that required no parts and only 15 minutes of labor. Here are the details: This past Saturday my furnace stopped heating my home. I called A.J. Perri and they sent out a technician on Sunday morning. The tech ran some checks and concluded that my “inducer assembly” had to be replaced. Parts and installation would be $1,600. He said someone from the office would contact me on Monday and let me know when they could have the part. He also said that he couldn't be certain that there weren't other issues that wouldn't be found until the inducer was repaired. After the technician left I did some searching on the Internet. YouTube and Reddit were especially helpful. I discovered that the problem was that the condensate drain was clogged and water had backed up into the inducer assembly. The water prevented the pressure switches from detecting that the inducer was running and this prevented the furnace from starting. When I disconnected the condensate hose *2 quarts* of water drained out of the inducer assembly! This water was supposed to drain into a small pump unit on the floor that sends collected water to the sump. Over the years mold and algae had clogged the condensate trap and caused the backup. I disconnected all the hoses and removed the trap. I blew out the trap (making a mess) and confirmed that water would easily flow through it. I put it all back together and the furnace is working fine. The sad lesson here is that you can’t always rely on supposed experts. The good news is that the Internet can be your friend. Even more details: The original symptom was that the furnace would start up, the inducer motor would run for about 20 seconds and then it would shut off. This cycle would repeat every few minutes. Every few hours the furnace completed the startup cycle and then I’d get heat. Then it would stop heating for hours, and the indoor temperature would drop to the low 60s. What I learned from YouTube is that there are multiple stages for furnace startup. The inducer motor spins a cage that sucks in fresh air for combustion, and then pushes the hot gases through the heat exchanger and out the flue. Each stage in the startup has safety checks. The furnace will not ignite if the pressure sensors don’t detect that the inducer motor is working properly. Water is a byproduct of the combustion. It starts as a vapor but then condenses in the flue pipe and drains back to the inducer assembly, where it’s supposed to run through a hose to a pump that sends it over to my basement sump. The furnace is 14 years old. Apparently that’s long enough for mold and algae to clog the condensate trap and cause water to back up into the inducer. The 2 qts of water blocked the pressure sensor switches and so the furnace wouldn’t light. Final thoughts: For over 14 years I've had great experiences with A.J. Perri. They replaced my home’s original furnace and Air Conditioner units. They moved our outside A/C unit to the side of our house so we could have more quiet in the backyard. I had them come for periodic heating and A/C maintenance checkups. My impression is that they might cost a bit more, but they were reliable. I'm saddened that I need to post such a negative review."