Highly recommended. Sadegh repaired our AC system after another HVAC contractor told us we needed…read moreto replace our system to the tune of $16,000. He exhibits the rare combination of knowledge and integrity. Thanks, Sadegh.

BEWARE of Albortz: **Sabotaged my HVAC to Create Repeat Business**…read more If you're in the market for HVAC services, I strongly urge you to steer clear here. Over the course of a couple of years, I've encountered multiple incidents that seem to point to deliberate sabotage of my heating and cooling system. I also have PROOF in my pictures. I'm somewhat handy, and if I was not, I would have been taken advantage of even more. Here's my story: **Incident 1:** It all started when my AC unit broke down during a heatwave. I had a newborn at home, so I needed help fast. Despite being on the pricier side ($500 for the visit), they were the only ones available quickly. The technician "fixed" the issue and tried hard to sell me a brand-new unit--despite the fact that my current one was still functioning. I brushed it off as a sales tactic. However, when the weather turned cold, I realized my **heat wasn't working**. I'm a bit handy, so I took a panel off to inspect the unit, and what do I find? The **gas line had been turned off at the panel**! It's important to note that the heater worked just fine before this service, so the only possible culprit was the technician. Had I not caught this myself, I would have likely been convinced that the entire system needed replacing--costing me even more money. **Incident 2:** Later, I did end up getting a new HVAC system (from a different company). However, my diverters (which control airflow) stopped working, blowing a fuse. Once again, no one else was available, so I had to call Alborz again. I was skeptical after last time, but thought maybe it was possibly an accident... This time, I was on high alert and watched him closely. He fiddled around and had me go check the thermostat downstairs while he "worked on the unit." Reluctantly, I complied. Sure enough, when summer arrived, **the AC stopped working again**. **Proof of Sabotage:** After some investigation, I discovered the technician **deliberately disconnected a wire** in my unit, which is why the AC wasn't working. I have photographic proof showing the disconnected wire and the work area, demonstrating this malicious action. --- **Final Warning:** It's clear to me this company has a pattern of **sabotaging equipment to generate more business**. These aren't simple mistakes; they're calculated actions designed to mislead homeowners into believing their systems need more work or replacement than is necessary. If you're considering hiring them, think twice--you may end up paying more than you bargained for, both in money and frustration.

A rather complicated and sad review. I am a senior citizen. My gas heating system needed…read morereplacement after a fire in my furnace. $20,000 and I replaced it. The very next day the second heating system I had in an addition failed. I was distraught!! Net Zero gave me a great quote..several thousands less than other HVAC. What they did not tell me that they were only electric heating contractors. So after paying $12,000.00 for installation I now pay an electric bill of $1000.00 a month in the winter. They walked by a brand new gas system in my home..disengaged a second gas heating 50 feet away and installed a unit that is costing me a thousand dollars a month. Not one of the employees ...installers. or project estimators...addressed what a poor and unkind decision this was. Now I have to redo my heating system...sell my house...unable to retire . Would they do the same to their mothers..grandmothers? This is a sad and sorry company. Yes I know I'm a stupid elderly woman with no recourse from people like this. I just hope this warns others to avoid this snake company.

This review is merely a confirmation that Net Zero continues to offer outstanding service. Brian…read morecame to evaluate and quote a system, after my visit from Mass Save, I was able to get in line for installation. Tim and his team came to install and were inspiringly diligent, skilled, professional, hardworking and attentive to details on appearance/location of all the components. We are very grateful for them!

I am always skeptical when trying to find someone new to do work on my house. I do not take the…read moretime to write reviews often but he deserves it. He came out to look at boiler, changed a part and got it fired up. Identified that it was cracked and had to be completely replaced. Out of sympathy he just charged me for the part he replaced. He gave me a quote of what it would cost to install a new heating system. I called a few friends that are contractors and they agreed it was a very reasonable price. Dave came out the following day and installed it with his technician. Very professional and efficient, he even took a few hundred dollars off the price that he initially quoted. He checked in the following day to make sure everything was running fine. Great guy that knows how to run a business!

Sent a request out, and the owner David was very quick to respond and responsive throughout the…read moreprocess and scheduling. He was able to get someone out the next day, even on a weekend! He sent out Michael, who did a great job fixing a difficult AC unit and was a pleasure to work with.

Michael was absolutely fantastic. He accommodated us quickly, and was super knowledgeable. Fixed…read moreall our issues for a more than fair price. Highly recommend.

We used St. Jean Heating and Cooling for over a decade, since 2008 when we bought our house. Ray…read morewas amazing: humble, honest and very reliable. I remember us spending New Years Day of 2009 trying to remedy a frozen pipe. Highly recommended!

This is a follow-up from my review of ThermOil of Watertown, MA on December 11, 2025…read more ThermOil called me on Saturday March 14, 2026 at 4:09pm from their number of 617-926-0779 and left me a voicemail to call them back to talk which I returned their call. They asked or should I say they told me to me to remove my review of them from yelp because it was bad for their company. I said "Why"?, that's my review of what I went through with dealing with you. The individual told me that he knows my next door neighbor and that we met, he was referring to a party that my neighbor had and had most of her colombian friends over. I responded "What does that have to do with anything"? He went on to say that I said my water heater was not leaking or broken so I told him that I was making a customer call for service and you people never, ever returned my calls. He told me they were busy with "No Heat calls" and I said every company was busy in Massachusetts and I am not talking about the service staff out in the field, I'm talking about the office staff not returning my many calls to them. He told me that they were busy too! I told him that they were too busy to call a customer back? He asked me again to remove my review of them which I responded "NO" it's my honest review of what I went through with ThermOil and told him about my awesome service dealing with 128 Plumbing and Heating in Wakefield, MA. And I went on to tell him that this phone call to me is only going to make a worse review of ThermOil. He responded "So you are not going to remove your review of our company" and I told him again "NO" and he hung up. Well, if I get a knock on my door and some guys from ThermOil tell me they are here to change my mind about my review of their company, I will let you know, lol. This is not Colombia and what tactics they do down in that country do not work well here in the USA. And you know if he said to me that they would do a free service to make it up, things would be different but he stuck to his intimidation tactic. Oh well, they "Live and Learn" in this day and age.

I chose Thermoil for an outdoor installation through the Mass Save rebate program and had a great…read moreexperience. The technicians were professional, always on time, and kept everything extremely neat and clean. Anytime I had a question, they took the time to explain things clearly and made the process easy to understand. They stayed on schedule from start to finish, which made the project smooth and stress-free. My wife works from home, and the team was very respectful and kept noise to a minimum so she could continue working without interruption. Overall, an excellent experience and definitely a five-star company. The office staff was also fantastic and very helpful with the loan process and paperwork.

I hired Total Comfort to redo our basement boiler/furnace plumbing and to install mini-splits…read morethroughout our home in the Boston area. I cannot speak highly enough of the professionalism and quality of work done in a timeline manner. Honest, Dependable, Great value, and perfect installation considering many factors including a very old and difficult home to work with. A+, Recommended.

James came out to our home and did an amazing job. He was kind and professional and explained…read moreabsolutely everything to me. He did a thorough inspection of all parts of the system. He gave his honest opinions of what could be replaced and what the rough costs were for each component plus labor. He also explained what he thought was the best option to keep our current system running at it's best, which I chose to do. He re-gassed our unit and added a startup capacitor which seems to have done the trick! The outdoor unit kicks on easily, runs quiet and consistently now. And of course the AC blows ice cold now. He even gave recommendations for future maintenance for not only the AC unit but the boiler as well. I can't recommend Total Comfort Mechanical, and James, enough!

No words can describe how much I really appreciate Rudy's quick response, punctuality,…read morecourteousness, professionalism and he's reliable! My HVAC on the second floor was running but no cold air outputs. It was a Friday afternoon and eve of July 4th. We have been having extremely hot and humid weather, over 90 degrees temps that week and it was baking up my second floor in no time, I called around to get a Technician who would come to look at the issues but to no avail until after July 6th onwards. My hope sank, but thank God one positive person responded, Rudy from CK Services took the job, diagnosed it and replaced the bad/old capacitor. Luckily, he got a brand new in box in his truck and that saved my second floor to cool down again! To me pricing wise is reasonable because it was an emergency situation and to wait until over the weekend my second floor would have completely been baked alive and soaked in humidity! Thank you very much Rudy, you're a savior and I truly appreciated your help. I'm thankful, grateful and blessed that now I know whom I will call for AC services. I definitely recommend your expertise to my friends. Happy 4th to you and family.

I found this company through an online promotion for a routine yearly maintenance service. They…read moreprovided competitive pricing for this service so I decided to give them a try. I was given an appointment that was accommodating to my schedule and I received a text to confirm the date and arrival time. During my service appointment, Rudy completed an evaluation and provided me with feedback of things that another company did not complete correctly during the initial installation of the furnace. This was followed up with an estimate of repair work that needed to be completed via email and text message. I decided to go with the recommendations as explained. The work was completed in a timely and professional manner by Rudy including updates along the way. It has been a week since the job was completed and although I don't know much about furnaces, I can say that my furnace has smoother sounds through the ventilation system. Sounds to me that the improvements made the system not work as hard as before.

Great experience! My poor dad's heater and water heater broke at the same time and I was looking…read morefor estimates. Matt was quick and professional and gave me a good recommendation on replacing our water heater with a trusted brand along with a reasonable price. He came through the next day and was did a great job in putting in the new unit. Their work comes with an one year warranty and the product has a lifetime warranty so we don't have to worry again for at least some time. Flexible, responsive, professional, and reliable. My dad is fully satisfied.

Matt is a great plumber. My old plumber sold his business, I have tried many plumbers. Matt is the…read morebest one. He will be my plumber in the future.