Cancel

    Search

    SumZero Energy Systems

    4.2 (21 reviews)
    Closed Closed

    Get pricing & availability

    You can now request a quote from this business directly from Yelp

    Services - SumZero Energy Systems

    HVAC installation or replacement

    HVAC system repair

    HVAC system maintenance

    SumZero Energy Systems Photos

    You might also consider

    Recommended Reviews - SumZero Energy Systems

    Your trust is our priority, so businesses can't pay to alter or remove their reviews. Learn more about reviews.
    Yelp app icon
    Browse more easily on the app
    Review Feed Illustration
    Photo of Jackie K.
    117
    24
    0

    5 months ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    1 year ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    8 months ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    10 months ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    2 years ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    3 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of John S.
    0
    19
    17

    4 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    2 years ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    5 years ago

    Business owner information

    Photo of David S.

    David S.

    Thank you very much, it was a pleasure serving you!

    Helpful 2
    Thanks 0
    Love this 0
    Oh no 0

    3 years ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    6 years ago

    Helpful 2
    Thanks 0
    Love this 1
    Oh no 0
    Photo of Gal M.
    0
    18
    3

    4 years ago

    Business owner information

    Photo of David S.

    David S.

    Helpful 0
    Thanks 0
    Love this 1
    Oh no 0
    Photo of Drew M.
    50
    50
    0

    6 years ago

    Helpful 2
    Thanks 0
    Love this 1
    Oh no 0

    4 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of A N.
    0
    3
    0

    6 years ago

    Helpful 2
    Thanks 0
    Love this 1
    Oh no 0

    3 years ago

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0

    3 years ago

    Business owner information

    Photo of David S.

    David S.

    Thank you for your review, it was a pleasure serving you!

    Helpful 0
    Thanks 0
    Love this 0
    Oh no 0
    Photo of R A.
    26
    44
    49

    4 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    5 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0
    Photo of S D.
    0
    11
    0

    5 years ago

    Helpful 2
    Thanks 0
    Love this 1
    Oh no 0

    7 years ago

    Helpful 1
    Thanks 0
    Love this 0
    Oh no 0

    Ask the Community - SumZero Energy Systems

    Review Highlights - SumZero Energy Systems

    The team led by Paul showed up on time every day and worked extra hours to finish the job in a week.

    Mentioned in 4 reviews

    Read more highlights

    You might also consider

    Centerline Mechanical

    Centerline Mechanical

    5.0
    (7 reviews)

    These guys are awesome and easy to work with. I appreciate that Julian wasn't trying to sell me a…read moreheat pump when all I asked for was a boiler replacement. Price is reasonable and about the same as the other 2 quotes I got. I like how they accept credit card payment if you are trying to maximize credit points. You can also save 2% of you opt to pay in cash. Install went well overall. There were some hiccups but they did come out immediately go address any concerns. Would highly recommend this team if you want to get your boiler replace

    I had an issue with my air conditioner, I looked up Centerline and was very impressed by the…read morebackground of the owners. They are local BVT grads, then went to Mass Maritime before starting their business. I called and someone picked up immediately. I had a very pleasant conversation with the person on the phone. I thought I was going to have to wait a long time for an appointment as it is summer, but he had a gentleman, Adam, out to us the next morning. Adam arrived at 8, on time, professional, called before he arrived. We had asked because we needed to lock up the dogs. Adam looked at our air conditioner and immediately identified the problem, explained it and took care of everything. He wore foot protection and cleaned up everything. The price was very reasonable and Adam recommended cleaning once a year and changing the filters twice a year. I highly recommend this company.

    C & C Plumbing & Heating

    C & C Plumbing & Heating

    2.0
    (2 reviews)

    Tim is a good Heating and Plumbing guy however, We had him come to our home to work on our…read moreheating system a couple of times and the last time he came we got the " I will have to get back to on if I can get parts for you system" It never happened... no call, no return of numerous follow up calls. The system had a leaking drain valve and was leaking such that I had to vacuum up the water every 8 hrs to prevent flooding in the attic. This was in the middle of the winter too... Other plumbers came and said I needed a new system... I ultimately had to figure out how to fix the system myself. It was literally $12 worth of parts from Home Depot and a little time to fix. We thought this was a "hey it's the middle of winter and I am booked" situation but a courtesy call or return of a call from Tim should have been made. We just called him again about some water pressure questions the other day thinking we would give him another chance. No return call from Tim to date. While Tim is a good plumber I can't recommend someone who leaves a client hanging to bad too as he is a nice guy...

    I first met Carlos when he had first acquired his master plumbing license I hired him to do my…read moreupstairs bathroom because I was really concerned about the way the piping came in. He assured me he could fix it and come in behind the vanity well as it turned out, his first job was a fail because of what he assured me he could do he did not, and it also caused many holes in my attic to try and find the pipes connected to my sink. I let it go. I didn't push. I needed a sink. Unless I decided to give him a second chance for my downstairs bath to put in a pedestal sink in a toilet Now my downstairs bathroom, everything was nice and leveled before we started the work of changing out sink is nice and level the toilet however is pitched so that it is the furthest thing from I've seen any object in my life and because of it I also hear unusual sounds as if no seal in the the smells trying not to be a pain in the behind and give him some leeway. I let it go, but now I'm trying to sell my house and I realize that there's no way the way this was done is going to pass inspection. I called and asked him to help me now keep in mind I'm 72 and I only have one function arm because of a complete torn bicep in my left arm and on the left and he basically told me that I can't call him back this far out in time to fix it So in essence, I advised him changed. I just can't live with it fear is the inspector won't pass and he basically said too wanna be You So my advice to anybody is do not hire do not hire!!!!!!

    R E Coakley Plumbing & Heating

    R E Coakley Plumbing & Heating

    5.0
    (16 reviews)

    I called Coakley plumbing looking to get a quote on the installation of a new hot water heater…read more They came out the same day to take a look at the job. He quoted me a number which seemed reasonable. After calling several other companies and learning that it would take well over a week to get out, and they charged fees just to come take a look it made my decision easy. Jim and his crew were there within a week to get the job done. The installation took about an hour - hour and a half. It was an easy, very painless process. Jim and his crew were friendly, knowledgeable and kept me informed throughout the process. I had Jim take a look at a couple other small projects around the house which he accepted. Which leads me to today. I called Jim at about 8:45 with a problem regarding one of the small projects he looked at. He was at my house in 25 minutes and immediately to work. Jim and crew seem to genuinely care. They are honest, charged me exactly what he quoted me. They were prompt, and the work is excellent. I will be calling Coakley Plumbing for every plumbing and heating job that comes up for as long as I'm in the Medway area. You should too.

    Excellent plumber! This was our first time calling Coakley and they were fast, reasonably priced,…read moreand responsive. So the reviews were spot on here. He fixed two clogged drains and replaced a disposal super fast and without any mess. We're very happy everything is working now and we can enjoy the holiday season! Thank you for great customer service and quality work. Highly recommend.

    Nicholson Plumbing, Electrical, Heating, and Air Conditioning

    Nicholson Plumbing, Electrical, Heating, and Air Conditioning

    2.6
    (139 reviews)

    If I could, I'd give 5 stars for repair and 1 star for service…read more Service: Over the years I've tried several times to schedule routine maintenance, and every time the wait is 4+ months -- basically making it impossible to get seasonal maintenance done unless you book a year in advance. After paying for a repair estimate, the technician told me the best solution for my issue was to keep up with routine maintenance. On that basis, I was sold a Comfort360 support plan at $40/month, which states in the contract: "Provider will provide you with priority service in scheduling your maintenance and emergency repair appointments over non-Comfort 360 customers." Nevertheless, Nicholson informed me that the AC maintenance appointment I'd scheduled in April would remain in August and couldn't be pulled in by even a single day. Unless every appointment booked through August is for a Comfort360 customer, they are clearly not giving Comfort360 customers priority. You can verify this yourself by scheduling maintenance on their website -- whether you indicate you're a member or not, you're given the same service dates. If you're going to sell a premium service plan, you ought to carve out dedicated appointment slots for members rather than sharing a common pool between members and non-members. Repair: I've used Nicholson for both plumbing and HVAC repairs and have always found the technicians to be honest and fair when describing my options. This stands in contrast to some providers that try to sell products and services the customer doesn't need.

    Derek and Eilel completed the difficult work of installing a new outside frost-freeze protected…read morefaucet on our historical Sudbury house. Also, Derek identified the cleanout trap for our septic waste water line, as well as executed a disconnection and removal of a failing salt-based water softener - much appreciated! The system is now finally again using the inline carbonate filtering cartridges, which help to extend the life and health of our appliances and drinking water resin filters. Very pleased overall as usual with Nicholson service techs and company.

    SumZero Energy Systems - hvac - Updated June 2026

    Loading...
    Loading...
    Loading...