I made an appointment with Jim to show up at my house today for an estimate on a air conditioning system. This was the conversation Me - Are you able to come and look at our system and give us an estimate Jim - Sure when would you like me to come Me - as soon as possible Jim- just say when and I will be there Me - how about tomorrow Jim - will after noon work Me - how about in the morning Jim - just say when Me - how about first thing Jim - okay between 8:00 - 10:00 Me - I just called at 9:56AM and asked if he was on his way Jim - oh let me check the calendar - oh ya there you are - I'm obviously not going to be there now I've had phone call after phone call this morning Me - so you're no coming Jim - well how about if I come after noon Me - Don't bother coming at all DO NOT CALL THIS COMPANY. Completely unreliable and complete disrespect for my time or my schedule read more

I called today to become a new customer and was refused because I live 10miles away. They stated they don't like coming into that city even thought I said we have parking behind the house. He goes on to say that they try and get people who live close (didn't think less than 10miles was a big thing) so they can get more jobs in a day. read more

When our Long-term service guys didn't think they could handle a problem with our system, they recommended this company I had never heard of, Gassco. Best referral we ever had. They dispatched a tech who did a great diagnostic on our 18 year old system. He recommended we consider replacement. We agreed to meet with the owner and he presented options from minimum to get the system running to different replacement options. He asked us about features we thought important for our 2600 sq.ft. Condo. When we identified preferences, he provided quotes to meet our preferences. We elected to replace the heat pump and thermostat. THe following week, a team of 5 techs arrived on time, removed the old unit and provided a replacement more suited to our lifestyle needs. They also integrated the new system with the good parts of the old, such as a humidity management system, and made sure they worked together. They modified the air handling system and added new insulation to the ducts. Their staff electrician provided a new thermostat that also resolved an issue where environmental conditions influenced the settings - eliminating another problem we were oblivious to. The Gassco team cleaned up their work area better than they found it, including sweeping out the whole garage area where the air handler is located. I can recommend the Gassco organization for any HVAC project. They deliver professional service with a very friendly team and an organization that clearly believes they have to invest in the training of their people. Every one I met was very knowledgeable and professional. read more

Great team. Neat and clean. Friendly and helpful. Took the time to get our heat pumps/central AC installation done right the first time.

We found Gassco as a licensed and insured contractor through Mass Save to install 5 mini splits. Bill (owner) came out as a professional, honest and respectful person for the estimate (noticeably he wore booties over his feet, which was nice). He was very familiar with the Mass Save rebate process. After comparing his quote with other contractors, his was the most reasonable and fair price. After accepting the proposal and deposit, he booked us out 3-4 weeks. Communication was mostly over email - he and one of his guys called on Sunday prior to starting the work to confirm. His guys that came out were respectful, courteous and efficient. The work done went perfectly. I noticed they have a culture of teaching, so the work seemed to get done quickly and efficiently without mistakes. I'd definitely recommend them for a future job. read more

Best service I ever received! I had a full HVAC system installed and everyone on the crew was very attentive, super professional, and highly efficient. They provided all the details we needed to help us take advantage of MassSave programs, and put in a high quality system; the whole process was seamless. I will only use this company for my HVAC needs, hands down! read more

So, they were prompt about getting here. That's great. They were upfront about how they do pricing. Good. Unfortunately, that's where the good stuff stops. The diagnostic fee for triaging our intermittent heater issue was $100, which I thought was very fair... BUT... when they tried to charge me a $25 fee on that $100 to use my card, I was unhappy. I have a small business and accept credit card payments and have never in my life heard of a 25% convenience fee for using your card. I explained calmly and respectfully that it was a ludicrous fee and paid with a check, and the technician explained that he totally agreed and that the office always did things like that, making him uncomfortable. He also told me that he was over working in the HVAC industry, and would be quitting as soon as the owner retires. Weird to share with a prospective customer, but OK. He diagnosed a bad inducer motor and left, explaining he'd get back to me later with a quote and expected it to be around $500 for parts + labor. He called back and said that he had bad news: the type of furnace I have, York, is notoriously difficult and expensive to get parts for and the part would cost me $595 and, with labor, the job would cost $821. I went online and found the part and several viable replacement parts, but couldn't find one that cost more than $300. So I decided to pass on these guys for the actual job. Sloppy customer service and tried to overcharge me. Ultimately went with another person who determined that my motor was working (but would fail in a year or two), and that the gas valve was not working. He showed me how and why he knew that was the problem, and also replaced an air pressure switch that Gassco left dangling inside of my furnace. Total for job: $140 for diagnostic + $340 for repair and everything is humming beautifully. I'll stick with the second guy, thanks. read more

First let me say that Bernie at Gassco Heating & Cooling is great. Today is the hottest day of the year here in the Boston area. Yesterday afternoon my air conditioning stopped working. My wife has a medical condition and the hot air combined with all the pollen out makes it hard for her to breath. I called several places first thing in the morning, explained the need for cool air for my wife, and all of them said they could not help me....EXCEPT Gassco!!! Jim said they would squeeze me in. Later in the day Bernie came by to assess the situation. He checked the system and found that it was a very minor issue that he quickly took care of. It is so great that Gassco cared enough to help us. If anyone is thinking of service for their air conditioner you should give them a call. I also found out that they do plumbing and have scheduled for them to fix that issue. read more

I received 5 quotes to replace my furnace and central air.  Gassco stood out among all the others.  Bill, the owner, came out and was the only contractor who took the time to listen to my concerns.  He was the only one to do a manual J load calculation and properly size the equipment. (The others all quoted "like for like" equipment despite the fact that my 1997 furnace was oversized). Gassco's proposal/quote also stood out for its clarity in a fair and reasonable price and work to be done.    The Gassco team has great communication and answered all my questions along the way.  They are very knowledgable, skilled, and professional.  Everything looks great. The high efficiency furnace has made my home much more comfortable and I am looking forward to saving on energy bills as well as a MassSave rebate.   I will be recommending Gassco to everyone; you will not find better service!! read more

It's been nearly a month now since the HVAC Tech from Grassco came out to service my AC system and everything is still working great. I can't believe that four other HVAC company's told me that I had to replace my system when all that needed replacing was the thermostat! Thank You Grassco! You save me $5,000!!! read more

If I could give these folks 6 stars, I would. They are the best, most professional HVAC outfit I've ever dealt with. Several years ago they installed a humidifier system on my basement furnace and did a thorough, totally satisfactory job. So I recently turned to them to fix a serious issue with the other furnace, a high-efficiency unit installed in the attic. The builder had foolishly placed this unit in an uninsulated knee wall. On very cold days, the furnace's condensate line was freezing, leaving the furnace inoperative. The existing installation was a disaster -- very tight and perhaps not even up to code. I lived with the situation for three years. The fix would be difficult: We would have to remove the furnace, then insulate the knee wall space, leaving a proper airflow path along the underside of the roof so that ice dams would not form. We would then have to reinstall (or replace) the furnace, and in the process provide up-to-code access clearance to it. I finally bit the bullet. Gassco's solution and its execution were impeccable. They removed the old furnace, then arranged for a contractor to come in and do the insulation work. Then they installed a new furnace (the old one was nearing end-of-life). The contractor then returned to do finish carpentry on a much-improved access door to the unit. The entire job took 8 working days. Aside from the professionalism of everyone concerned (Bill Gass and Bernie, Richard, Jeremy and Tracey, plus contractors Bob and Paul), the most striking aspect of the experience was Gassco's project management. Everything happened on schedule -- the various phases of the project followed each other seamlessly, without a beat being missed. This was an expensive project but the result was worth every penny. I highly recommend this company -- which, by the way, also responds proactively on matters of routine maintenance and service. read more

I called Gassco to fix my broken AC during the latest heat wave. Jim was very thoughtful and responsive on the phone, and Sebastian who came to fix the system (within 24 hours of my initial call during a very busy time) was wonderful. He was very knowledgeable, and patiently explained what the problem Was and how to avoid it going forward. My system was fixed in an hour. Thank you Gassco! read more

Gassco helped us out by installing a new furnace when ours stopped working on a long weekend, when my husband, son and I were all home sick, and then came back years later to amend something pertaining to the install. It was one of the coldest weekends of the year. We were very grateful. Years later, when we went to sell our home, we didn't like the way the system venting they installed knocked against our door when we opened it. We called GASSCO, and they responded taking full responsibility for correcting the situation, and repositioned the pvc so that ran properly, and beyond that, helped me in the process to correct the drainage of that and the nearby water heater to flow directly down into the drain, rather than how it was installed originally to just drain out over the drain hole. (this was unrelated to the work that GASSCO had done) I cannot tell you how grateful I was to have such consideration and "over and above" responsiveness. Thank you GASSCO. Thank you Bill. read more

The company was initially very responsive and prompt and everyone was a pleasure to work with. Unfortunately, after spending over $12K on a new furnace, steam humidifier, and dampers they were initially responsive and honest about fixing a number of faulty workmanship errors (2 gas leaks, installation of a new high capacity unit into a 20 year old system of ductwork with incorrect filter sizes and dampers for the new system, the water vapor hose on the humidifier was not connected resulting in a huge amount of moisture in one room and poor function elsewhere in the house, messy initial installation, and damage to our outside property.) However, to their credit all of the above were promptly fixed with no questions asked. I was pleased with the service and responsiveness so continued to use the company even though unhappy with the number of adverse issues. The low score is based on the unusual number of installation failures and the fact that they stopped responding to calls for service of the system. This is very disheartening. I finally got through to them. I wasn't going to give a negative review because they had been nice and responsive but not even an apology after 5 months and repeated voicemails to 3 different senior members of the company requesting service. As an update, the owner refers to one small aspect of the issues illustrating further the deficiencies in this company's management and response disconnected to the issues. I was able to fix the leak on the poorly installed humidifier but shouldn't have had to. That wasn't the reason for the calls over a 5 month period. The calls were to arrange for the installation of a new air conditioning/heating system for zone 2 as the evaluation indicated a 40% loss of cooling from the ductwork. Kind of interesting that GASSCO has so much business that management can afford to ignore a major install. No worries Bill another company will be happy to secure the $10K of business for the new furnace, ductwork, and condenser installations. read more

Came to the house and they are Super expensive, after high quote did not promise will fix AC. They also charge $99 just to show up at your front door. Got other quotes cheaper and AC is working. read more

Gassco hit us up for a $2k boiler repair (heat exchanger) last year stating it had died due to improper maintenance. Thing is, they never show up to do the maintenance service calls! This fall was the last attempt we will make, they didn't show up for two appointments in a row, so I let them pick their own day/time for the THIRD attempt. Instead of coming Sebastian texted us that we should just find someone else because our current job wasn't as important to them as others. He also blamed 'the guy at the office' the multiple times no one showed up for appointments we made with them, stating he's just trying to jam in jobs they can't actually accommodate. Bottom line, they don't value their customers. read more

I used them for repairing my furnace that stopped working suddenly on a real cold day. To make matters worse, it was a weekend, and most other places that I called were either closed or not willing to service a new customer. I called Gassco and they came over within a hour and a half. Took good care of my furnace and had it up and running in less than an hour. The gentleman also took the time to explain in detail what had gone wrong, and answered all my questions. I would definitely recommend them to others. read more

I just want to say that the service from the guys at Grassco is great. They come to your rescue very fast and get things fixed. They also give you recommendations to make sure they don't have to make frequent visits to your home! They are friendly, responsive and do a very good job. I would definitely recommend their services. read more

Gassco recently serviced my air conditioning system, compressor is ok, but coil & furnace were 30+ years old and I knew it needed replacing - which they did - great service, great people - very friendly, extremely knowledgeable and professional - Gassco is the best - a great experience. Andy C. read more

Gassco installed a generic TXV valve on my indoor AC coil a few years ago. This valve did not only not match my system, it also was brazed on as if a 4 year old did it. As a result my system had leaks at that area for the last 3 years. Now I have to replace my coil AND condenser for 4K. Gassco is a Micky Mouse Hvac company that is not straight with their customers and does shoddy work. read more

My heating system failed in January. I called a company that couldn't repair it after paying $700, changing 3 parts and 5 days in the cold with my family including young ones. The owner then stopped returning my calls. Thats when I called Gassco that came recommended by a neighbor. They came within 2 hrs on a Saturday and repaired it in 30min. Friendly staff, responsive and effective! they are a bit pricey but honestly it was worth every penny after days in the cold! read more

I highly recommend Gassco Company of Dedham especially for heating and AC installation. Within a day of my initial call, Bill came to my house to look at the old system, assess the house heating and cooling needs, and gave me two recommendations for a new high efficiency system which I wanted. I was able to make a decision because Bill provided such clear, understandable explanations of the two suggested systems. Bill's proposal on the purchase price and installation of the heating and AC systems was very reasonable. (I had contacted three other companies before I chose Gassco and done research on high efficiency equipment.) My equipment order came in within a short time and so did his installation team of Jeremy, Justin, Nathan, Bernie (electrician), and Richard (plumber). These guys are friendly, professional, and truly knowledgeable about the equipment installations and operations, especially the new high efficiency heating and AC systems. During the installation, I asked Jeremy and Bernie a million questions and they always took the time to answer and show me on the equipment. The team removed the old heating equipment and outside AC condenser, did the installation, and tested the equipment all in 1.5 days. I was so impressed with their teamwork. They also kept my basement and storage room clean by placing tarps on the floor and on my belongings. During these past cold days, the heating system worked great! I have since asked Gassco to do some plumbing work for me, too. Also, although Gassco does not do house gutters work, I asked Bill if he knew of a good company and he gave me the name of someone who does gutters and now I have hired that company. The Gassco team is like having a trusted neighbor who wants to help me out. read more

My heat wasn't working so I called Gassco and I couldn't be happier with the service. Jim was very nice and even though it was a simple fix he took his time to go over the furnace and how it works. He also gave me tips on basic maintenance and gave recommendations on work that should be done to improve the system. read more

I called GASSCO after our very old furnace quit on us. It gets very cold in our house and we have young children. They were very responsive and Sebastian came out to our house to take a look at it late in the day and stayed to diagnose the problem until almost 7pm in the evening. (And we were first-time customers.) A part needed replaced that was discontinued and he didn't have on him, so he had to leave for the night. He was able to find the part the next morning at a supplier and came back in the afternoon to finish the work. He was kind, straightforward, and very competent and fixed the problem in very little time. I highly recommend GASSCO and Sebastian in particular. We are very grateful to have our heat back on! read more