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"All Phase Heating and Cooling is the absolute BEST here in Milford, CT. Tony Alicki and his sons - Anthony and Matt - are what old world values and expertise are all about. Honest. Fair. Expert in their craft. We contracted with them when we had a MAJOR home renovation - cut off the top of our house and added a second floor. Tony was with us all the way - and in the 14 years since then, he has faithfully, and honestly service our home - with the profound respect and service that is rare these days. His boys and family members keep the tradition of excellent customer service alive. We heartily endorse this company. You will not be disappointed."

"Thorough explanation, great service, neat installation and competitive pricing. Would hire again."

"AirTech and Mark Miller responded by calling me almost immediately after my online inquiry to Home Advisor's for service on my gas furnace. It was on December 23rd, Saturday approximately 6pm. He came within the hour and fixed the problem with my furnace. Considering a weekend, after hours and also a holiday weekend at that, extremely reasonable price. I would use them again and I would recommend them highly, as well."

"fast and efficient"

"We couldn’t be happier with our new central air HVAC system! Our old system broke down during one of the hottest weeks of the summer, and Ricardo and his team came to the rescue. They were incredibly accommodating for what was truly an emergency situation. From start to finish, Ricardo was responsive, professional, and communicative. He took the time to thoroughly explain everything to my husband and me, and made sure we were comfortable with the new system before wrapping up. The installation process was fast, efficient, and impressively neat—his team showed great care and attention to detail. Truly outstanding service and workmanship. Highly recommend Ricardo and his team to anyone in need of HVAC work!"

"Very responsive to questions all along the project. Brought in installer to pre-check and make sure plan would work. Very respectful of property and very timely completion of project. I recommend this company!"

"We had a furnace installed by Harp on July 8th 2024 after it being diagnosed by their technician as to the reason our ac system was not functioning properly. That’s when our troubles with Harp began. The installation was not done properly, we needed 3 service calls to get the ac to work properly. The installers were sloppy. We cleaned up screws and wire and parts from the old furnace for weeks. When heating season began we noticed that the humidifier installed with the furnace was not operating. We scheduled an appointment to have it repaired and they called the day of the appointment and told us they couldn’t come that day and we had to reschedule, so reluctantly we did. They finally came and repaired it. From what the technician told me it was not wired properly. On January 21st 2025( the coldest night of the year) the furnace stopped working. We called Harp to get someone to come to repair it as we had no heat in below 0º weather I was told the best they could do is to come the next day between 2 and 6 pm. I tried to explain that this was an emergency but to no avail. I called my local oil company and they were at my door within 30 minutes( which I would’ve expected from the company who sold us the furnace) the repaired it quickly and told us that one f the wires on the control panel was not attached properly. It cost me $300. I would NOT recommend Harp to anyone. They are not reliable and do not stand behind their promises of service 24/7. Stay as far away from this company as possible. We are sorry we ever started with them."

"Perfect as I expected and more. East Coast installed a central air system and a ductless heating and calling system in my house. They were much affordable than their competitor."

"Pleasant, timely and professional. Did a great job and would definitely use again"

"Highly recommend! They were extremely responsive, delivered outstanding work, and I will definitely look forward to working with them again."