I recently called to have my furnace maintenance done and when I went downstairs to show him the…read morefurnace, I discovered a pipe had burst overnight. Onofreo's maintenance man immediately did everything necessary to stop the leak, as well as found and repaired the problem. Even though they are more expensive than other companies I've had in the past when it comes to things like this, they can't be beat. He was even nice enough to tell me how to remedy the problem so that it won't happen again and willing to come back to work with the contractor for the repair.

I've given this company so many chances to solve the issues created by their heat pump install…read more The last issue is that our heat pump whistles day and night with a loud popping outside... all the time! It's a high pitched squeal. We've had Onofreo out maybe 10 times and each technician has had a different diagnosis and /or solution. Sometimes they contradict one another entirely. Onofreo just keeps coming back, making tweaks, reversing and re-reversing solutions. My only assumption is that the system has faulty parts or was installed incorrectly. It's been terrible and the ordeal has lasted for 8 months now after installation.

We've had M&R come out for two unrelated Air conditioner issues, and I'm so grateful for them. They…read moreschedule visits quickly, and John (our technician) has forgotten more about air conditioners than I will ever know. He's fast, no nonsense and he took the time to help me understand the what and why behind our issues. I've added M&R to my contacts list: they are forever my go-to for AC issues.

What a fantastic company and crew! Always so responsive and takes time to educate us. We have had…read moreall sorts of services and replacements done and each time we are very impressed with the caliber of the employees. (shoutout to Carlos, Jason and Dex) Very respectful and courteous. Can't recommend them enough.

Always responsive, friendly and efficient. A pleasure doing business with them. Nice technicians…read more They show up when they say they will. I don't feel like they're trying to pull one over on me. Respond outside of office hours when I text. Great company.

Prompt. Responsive. Professional. Friendly…read more We have used them for years for a variety of projects in maintaining and upgrading our house and we will continue to do so.

I have been a customer of Alliance for my home and Office Building for the last 24 years and have…read morealways been completely satisfied with all services received. Just completed a project the previous month to replace one of the office building's air handler and condenser units and the install went great. Minor issue developed and they were out immediately to make the minor adjustment that was needed. Richard the tech was terrific and I really appreciate his ability to explain everything in simplistic terms. Scheduling service calls is always smooth with Cat, Rebecca does a great job in coordinating projects along with Joe S who handles the sales side and install coordination. Joelyn who has been there the from our start, overseas a well controlled operation. Alliance has been providing the same consistent great service since the time I first became a customer and through the present.

This company is exceptional So very happy we switched our…read morecommercial account to Alliance The employees truly take pride in their work and get to the root of the problem

Our house steam boiler in Hamden failed and we needed a new one. Our long time heating contractor…read morehad likely contributed to the boiler cracking by setting it incorrectly so I looked on Yelp and in addition to getting a quote from our current serviceman, asked several others for quotes. Ray quickly responded and not only offered a better price; but seemed to be very knowledgeable about our system. He came to our house and was able to get the old unit working temporarily at no charge and further impressed us with his knowledge. I felt we could trust him and ordered a new boiler from him and also a new gas hot water heater as it was near the end of its life. We put a deposit on the parts and when they arrived he and an assistant installed them. Their assembly work was excellent, he skillfully adjusted the new units and all is now working better than ever. We will use him going forward and highly reccomend him. TR

Ray met with us today. He explained the process and our options. Awaiting to receive written…read moreconfirmation of our options and several references.

I was very satisfied with Spectrum when they came out to evaluate and fix a "noise" I heard coming…read morefrom our AC Unit. Ricardo took the time to evaluate all the possible options based on my limited explanation/description of what was wrong. He was very thorough in checking to make sure all areas of our unit(s) were in good working order and through exploration, was able to locate the broken part, replace it, and get our unit back in working condition. I also appreciate that he took the time to explain to me how the unit works, telling me about what each part is and does, and about some other noises I might hear that are perfectly normal (very informative and helpful, esp as a new homeowner who is just learning everything about everything home-systems related!)

The company came to our house didn't do a thing don't this company we had to use another company to…read morefix our issue.

My AC cut out in 90 degree heat the same day we were expecting 4 guests for several days. I called…read moreabout 9-10 other places before having the good fortune to find Wilson. None of theme could come same day for my emergency, most not for almost a week. Wilson saved my skin. He was johnny on the spot, arriving within 2 hours, got the job done fast, and was very likeable to boot. He's my HVAC guy from now on, and I strongly recommend you try him too.

From the owner: Heating and Cooling Services for Oil and Gas Boilers, Oil and Gas Furnaces, Air Conditioning, Heat…read morePumps and Hot Water Heaters. Servicing both residential and commercial HVAC Systems.