Heat Pump Repair Services in Lowell, MA

"Great workmanship. Completed work on time. Kept area clean and cleaned up nicely. Would highly recommend."

"Jake diagnosed a long running problem with my ac system (a poorly performing thermostat) and fixed it."

"This was a home run for Cornerstone! Incredible service from start to finish! This was a complete Central AC install including installing all new ductwork. Andy & Britt were incredible. They were on time every day, and very personable. The job they did was great but I also appreciated how it looked. They took the time to tie up all the duct tubes so it was tidy and clean looking in the attic. This was a multi-day install, and there was constant communication on the schedule so I always knew when to expect them. The 2 electricians - Rick & Jeremy were the same. Very relatable and personable, on time and professional. They took care of the electrical install and also tidied up some other wiring. Front office was very professional and courteous, and consistently checking in on the job. Incredibly blown away by the amazing job the entire company did! I would recommend them 1000 times over! Great job to everyone!"

About us: "Andy Heating and Cooling is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests, and make their concerns the basis of our business."

"Dan S. and Don N. both did an amazing job. They initially came late, but called to let me know that they schedule had changed, which is appreciated. They were going to replace both the furnace and the AC. They managed to get the furnace into working condition on the first day, which I needed because I had had no heat for the last couple of days. They finished complete installation in a few days. They left the area they worked in clean. They walked me through everything they were doing and why they had made certain choices. Very professional job. Will definitely use them again and recommend them."

"The team at TJ's HVAC is courteous, professional and very knowledgeable. You can count on the job being done right the first time, and their maintenance program is great. I have had numerous jobs accomplished by them including furnace replacement (upgrade), AC replacement (upgrade), air exchanger/purifier system installed, humidifier installed, water heater replacement, ventilation system/duct cleaning, and house water filter system installed. Their maintenance plan is perfect and maintains all my systems in tip top shape."

"Mike was above and beyond helpful! He even walked around the house and talked about my air conditioning and heating unit, which was great. He was knowledgeable and did great work."

"Eric was very responsive, quick and knowledgeable and most importantly had extremely great competitive prices! Will be a long time customer!"

"Buck and Wayne installed a mini split heating and cooling system in an attic bedroom/bath. The space was very tight and it took a lot of expertise and creativity on their part to hide all the piping. The outside unit mounted on the back of the house above a porch is a lot more visible than I thought it would be but they did everything they could to make it less intrusive. They arrived before 8 am and had to work outside in some bitter temperatures to install the outdoor unit. At the end of the day, Buck and Wayne took time to made sure that I knew how to operate the unit and that I could call if I had questions. I did a walk-through after they left and the rooms including the attic storage space were spotless. I would highly recommend them for any heating and cooling work you are considering."