Get matched with top heating and air conditioning pros in Old Saybrook, CT

"Jeremy and his staff are professional, intelligent and kind. Jeremy answered all the questions I had and even explained a lot of things I didnâ t know to ask about. All of the work was very high quality. I will definitely be calling him again for any future electrical work needed around the home."

"He didn't do any air side of furnace replaced ignitor we had loud bang noise it was because we needed the furnace to be cleaned and vacuumed I saw pics from real furnace guy it was full of rust and cresol flakes he never vacuumed anything terrible job never fixed problem"

"fast and efficient"

"Amilcar was professional from the start to the finish. He was efficient too. He was very neat and kept the work area clean. I will certainly call on Diamond Plumbing and Heating again should I need service of the type they provide"

"Highly recommended"

"HARP was hired to replace our central AC system with Heat Pumps. The job was never complete, once they rigged the new equipment to get the AC only (no heat) working they scheduled follow up visits which eventually resulted in a no show/no call. After attempting to reschedule further, this is a frustrating process which entails a cycle of waiting on hold only to be transferred to wait on hold again, the work was never completed. It seemed as if none of their techs actually knew how to install this equipment, upon inspection of their work we decided to have it looked at by a 3rd party. Sure enough the equipment was installed incorrectly. At this point we no longer felt safe having further work done by HARP and had another company complete the install. Rather than working with us on the price HARP chose to forge our signature and submit it to the financing company, no invoice was ever received, nor was any warranty paperwork. This experience has been nothing short of a nightmare, I would urge you to choose a different HVAC contractor."

"John Valero and his partner did an EXCELLENT job. John was professional to work with from the beginning of the project through completion. He was extremely reliable (always showed up on time) and worked with my timeline. I would highly recommend Cawiamca Electrical and John to anyone needed electrical work."

"Extremely well. Eli responded very promptly to our inquiry. He came to the house and did appropriate assessments . He gave us several options for what we needed. He came as scheduled to install the system, and followed up on several minor details even after he had been paid in full. I give this business my full endorsement."

"My AC was not working Precise came out and fixed the problem . I was very pleased with the service and professionalism. I will be using for all my maintenance and repair needs."

"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."