Used Climate Design for 20 years (hvac and plumbing), zero problems, nice and helpful technicians. All good until a "new to us" technician named Angel M. showed up in Jan of 2026 to fix a heat problem. Extremely rude, condescending and did not believe my description of the problem after explaining it 3 times. He finally looked, found a broken damper and continued to be rude. I asked that he leave and for someone else at the company to fix the problem, it was that bad. He got extremely angry, yelled at me and left. I immediately called Climate Design to report the problem with the tech, they did not care. After 20 years of great service, I was not going to risk this angry man showing up at my house, so we changed companies. read more

'great customer service and willing to get the job done. Will work with them in the future

My Furnace which was original to the house finally gave way last week. I had call for a maintenance visit and during that visit (Carbon monoxide holes were detected as well as a jet of flame coming out of the unit). Unit was condemned. Problem was explained and photos and video shown to me as well as a salesperson came to the house and sat with me and worked out the possible solutions and choices. No pressure just calm and experienced advised. I chose the model and replaced my HVAC unit also. Good price. Company provided me with three portable heathers to help with maintaining heat in house during period prior to installation. (Outstanding service). Old unit was taken out of my attic, replaced with new unit this past Monday. I had heat Monday afternoon and they completed the HVAC replacements and final touchups on Tuesday by 3PM. The Staff, Service workers and representatives were professional, respectful, cleaned up after themselves and knowledgeable in their craft. Will recommend to all my friends and neighbor's. Satisfied with process and status. read more

The heating system this company installed last year has worked beautifully. Four days before the one-year warranty expired, we had problems. There was zero arguments, zero requests for payment of any kind. Both gentlemen who came out, first Joel to assess and then Steve Gaumont came out and didn't leave until everything was working as it should be. He was kind in conversation and explained the system to me in way that was understandable. To have an entire heating system just four days shy of warranty expiration, we expected some pushback - there was none. Thank you, Steve, for your patience and diligence in getting out heating system online! read more

Huge shout-out to Climate Design for coming to our rescue this past week when the temperature began to plummet, and our system shut down. We reached out to Jake and Climate Design, and they did not disappoint. The system needed to be replaced. It was done in a professional and courteous manner and we were up and running within 24 hours. I've mentioned this to friends and colleagues, and everyone has been impressed. Thank you, Jake! EJ Perdigao Andover A customer for life! read more

We had our central air unit stop running on 6/29/21 during a 95+ heatwave and they got to us on 7/2/21which was ok with us as I'm sure they were straight out with calls. The guys found it was a bad capacitor in a few minutes time and replaced it. The charge for the capacitor was $291 plus $89 diagnostic charge. They were here and gone in 30 minutes. Parts on Amazon are much cheaper with a 300-400% mark up so be prepared to be fleeced folks. read more

Our a/c stopped working. Tech came out promptly. Then he said he had to call the manufacturer find out how much the parts would cost, and would call me back later that day or the next to schedule the repair. I waited TWO WEEKS. That's two weeks of 90-degree temperatures every day. It takes 2 weeks to make a phone call? I called after a week and again a few days later. Finally got the estimate and a scheduled appointment. Appointment was scheduled between 11 AM - 1 PM. When I got home at 10:30, there was a phone message saying "we're here at your house, we were scheduled at 9 AM." Complete and utter BULL! I would NEVER have accepted a 9 AM appointment because I have a class every day at 9 AM. Techs and office staff were unflaggingly pleasant, cheerful, respectful, and polite. But it's all pretty disorganized. We used this company (Merrimack Valley Corp) 10 years ago and again 6 years ago and they were great. What happened? read more

They installed a new water heater that is not energy efficient and not eligible for Mass Save Rebate. The rebate was declined saying the water heater UEF was less than 0.68. When checking the Bradford White website for the model number that they installed, it said it was a discontinued model. read more

After two years my Lennox AC unit started leaking refrigerant and the coil needed to be replaced. The coil was covered by warranty but I was going to need to pay for the labor to replace the unit. Rather than working off time and materials - Climate Design Systems has engineered an approach to warranty work where they charge a flat rate. After presenting the rate they then give you the opportunity to reduce it but only if you will subscribe to an annual maintenance agreement. The whole thing was sketchy but I agreed to have the work done and passed on the annual agreement. In total the work only took 2.5 hours yet I was charged over $1400 for the labor. When I questioned management about the rate that was far in excess of $500/hour I was given a laundry list of the "very expensive" tools that they have to use to do the work including things like PVC glue, a vacuum pump, etc. As an engineer, knowing what things actually cost, this only underscored for me the excessive rates they were charging. On the positive side, their crews are knowledge and professional. The problem here is that most HVAC systems last for years without maintenance so there is little incentive to do right by clients on a repair. If your system needs to be repaired, even if they installed it, you are probably going to find a more reputable rate somewhere else. read more

We have had nothing but issues with this company and and even after reaching out, the response I got was ill look into it. Spent over 20,000 dollars to have a brand new system put in our house. It had 2 units. The basement unit had a faulty condensation pump that leaked water all over my basement and the upstairs unit AC didn't work and we had to call and have them come back out. Not to mention we had a complete service done on one unit by their tech and had a different tech out 3 days later to tell us it was cracked and leaking Carbon monoxide and shut down the unit ( and the tech who charged us 300 dollars to service it didn't catch it). From follow up to concerns to multiple errors made with service and instillation, let's just say that I would not recommend this company. read more

what great service from Steve--diagnosed problem with A/C in 5 minutes fixed it in 15. Professional great company.

Our heating system decided to die right after Thanksgiving! We called our regular plumber and were told it would be two weeks :-( We were put in touch with Climate Design and they came to the rescue! Great technicians who kept us updated every step of the way. And, although we have an older system, they didn't try to "up sell" us on a new system during the holiday season - knowing money is tight. Thank you Climate Design and your great Techs Steve and Pete! read more

This place gets 5 stars . If you need any plumbing or heating this is the company to call . Nina btw is so great with customer service . This company is al about the customer . read more

Our central A/C compressor fan stopped working, and called Climate Design. The good news is they came the same day of the call and had a new fan and capacitor on the truck. The bad news is the ripoff prices they wanted to charge. Over $900 for the fan motor and a new capacitor, and that was on top of the $79 service call fee. I purchased the parts online for $150 and they only took 30 minutes to switch out. I understand that repairs and the convenience of same-day parts aren't free, but a 600% markup??? read more

Climate Design Systems I have used this Co for maintenances on my gas furnace since 2013 In 2017 I hired them to replace my gas hot water tank and that is when I found out that they had so many incompetent technicians. The guys that replaced the hot water tank had shut the gas and open a bassement window, it was very very cold that day 12/29/17 they left around noon time without locking the bassement window and without checking if the pilot was on in the furnace. By 4:15 12/2917 the house was getting cold. I called the office at Climate Design they said they would send some one within an hour. By 6pm 2nd call got the emergency line left a message, by 8pm 3rd call left message, by 10pm 4th call left message, by 10:45pm a tech called said he would be here but didn't give a time he arrived at 1:30 am he was the only on one on the emergency calls, he lit the pilot on the furnace left at 1:45am. In that morning around 6am 12/30/17 the section where I have radiant heat was 54 degrees so no heat there. No one working New Year I had electric heathers so I used them to keep the 2 rooms that had no heat warm. On 1/2/18 a technician came at 12:45pm found that the electronic mixing volve had shorted out because the furnace was off for 10 hours from the guys that installed the hot water tank. The mixing control had to be ordered. The technician that came on the 2nd came back on 1/18/18 to installed the new part he arrived at 8 am left at 8:45am. By early afternoon that same day I notice there was no radiant heat. I called back the office 2 technicians came to find out that the mixing control was wired wrong and it shorted out. A new one had to be ordered. On 1/22/18 tech came to installed the mixing control but didn't know how, so they called the co. maker but by that time my brother in Quebec passed away, all this trouble had prevented me to leave on 1/20/18 for Quebec so I could be there to say good by. These tech got to wired the mixing control temporally with the rest of the heating system. I called the owner of Climat to make sure it was safe so I could leave to go to my brother's funeral He said it was safe and to call when I returned to fix it right, On 2/15/18 at 9:15am the tech came back to rewired the mixing control they left at 9:30am and said all was normal. That night around 6pm the house was getting cold again. I went down the bassement to see if the pilot was on in the furnace, it was. Back upstairs check the thermostat that control the regular heat in most of the house and it was on off. The tech had shut it off to get the mixing control to work right but never bother to put it back on. I did not have to call. I did put it on myself, while I was down the bassement checking the pilot I notice that they had not put the cover back on where all the wiring was. The next morning 2/16/18 I called again to let them know that the cover should be on, I had to be out that day so we made the appointment for Monday 2/19/18. At 10:45 2/19/18 a tech, Tyle, came he was the one that came on 12/30/17, I found him to be the more competent than any of the others that came and always left me with a problem. Now after 21 days things are normal. Needless to say I will not recommend Climate Design to any one and I am looking for some one else to service my furnace. Louise, Ward Hill,MA read more

I called this company because we needed minor repair on an old furnace in a home we were selling. The work needed was small piece of flume to be cut and replaced, no big deal. Work was completed and I signed on techs smart phone for payment. No receipt which we needed to prove we addressed needed service. We had to physically go to this business for the receipt on letterhead. We were greeted by a less than welcoming woman who immediately snapped they were too busy to help. We pleaded since we drove all the way and needed this document to help with closing on sale of home. In typical sales fashion a document was produced with the tech's recommendation that due to age of furnace it be replaced. We were not happy since all we needed was a receipt of work completed and what we were charged. Instead we got a recommendation by a hvac tech right out of high school. Long story short; if you need an honest company for any climate issues I would steer clear of this one. They scared our buyers so much that we threw in a home warranty plan because we knew there was no issue. We lived there 11 years and that furnace never let us down. They'll end up costing you more than they're worth. read more

All I can say is GET quotes from nearby competitors/companies before you use Climate Design. They wanted to charge me $850 for a zone valve. I went with another company and my bill was $312. Do your homework or just go somewhere else, unless of course you have money to burn. read more

Central AC Unit was not starting. Called Climate Design and they sent a tech out the same day. Problem was a faulty capacitor. Tech had part on truck and was able to replace it and a noisy contactor. A little pricey but cheaper than any other HVAC company I called that day. Also, same day service was a huge plus. read more

I cannot recommend these guys enough. Knowledgeable and friendly staff, always respectful, and the prices were very fair. I will definitely be using this company again. read more

Ok so let's start here..... moved into house in April 3 years ago. Right away had climate design replace all 3 furnaces and add central air to all 3 units. All at the same. Was happy with the guys and I'm assuming all went according to plan. I pre pay every year for the priority plan for fall and spring maintenance. The first 2 years the office had lost or misplaced my agreement had to prove payment etc and also triple charged me. The office can be a tough run so I let all that go. I can work through that. However, the guys that come out are never the same, not well seasoned, bad mouth the previous guy and always find something wrong or up sell. I've had to pay out of pocket a control board and tune ups that really weren't even done thoroughly. Last month in oct I had my tune ups and they shut off one of my furnaces when it was due to be single digit temps outside. Said my flue was blocked and carbon monoxide levels were through the roof. He stuck a probe in the flue pipe to show me how high. Then proceeded to tell me his company does not touch gas flues and I was on my own. They never called back. Just shut it off and left. So had flue cleaned... nothing there super clean. Had North East cooling and heating come to my rescue. All I'm going to say is they were very confused by the situation. My furnace is totally fine and safe. Needless to say I'm staying well away from climate design and will tell others. Also I noticed after they left they wrote that my water heater pipes were leaking on the work sheet. What are they doing near my brand new water heaters?? Btw they're not. So, I'm always looking to give 2nd and 3 rd chances because that's life sometime but Climate Design.... your just plain untrustworthy and you left a family in the cold with zero regard. Welcome North East cooling and heating. Eric and the office are top notch. I've never written a review like this. In fact I'm not one to write a review unless it's a really good one. read more

Worst company to deal with if you ever need heating/AC repair needs from them. I called this company because I am not getting hot enough air in most of my bedrooms in my house. This company sent a young kid (may be in his 20s) to look at what's wrong with me HVAC system. The untrained kid comes in and without looking at anything in detail draws a conclusion that one of the pump is defective because it is hotter than the other one. I had to tell him that the heat on 2nd floor bedroom was ON all night - the reason why that pump is hot and the other one is not. Then he looks at the hydro unit that I have and immediately says this is the most easiest to work with until I give him the manual book to make it easy and he takes off immediately saying, I will have to get a superior look at your system to determine what's wrong with it. The company sends an install manager next time to determine the cause of the problem i am facing with my heating system. The guy comes with 5 young kids in my house saying they are all being trained. Funny thing is, that the guy who came first is one of these kids to be trained. The install manager "Mike" looks at the systems and gives me a two different quotes for two different fixes. I've yet to hear back from them as to when they can come and repair the system. It feels like they just wanted to make the money on first visit and not follow through with their words or quotes. Makes me wonder how cerftified/trained or professionals this company employs. I suggest everyone to stay away from these clowns. read more