Needed a whole new hybrid unit, inside and outside. John was exceptional. The old unit left in the…read morecondo was horrible and there were so many things wrong that we didn't realize until it finally stopped working. John, James and Kyle went above and beyond the original scope of the work to do a proper install. Needless to say we now have an amazing unit done correctly. He and his crew are meticulous, neat (cleanup looks like no one was working there) and his recommendations were spot on. A real pleasure to have found him. Hopefully I won't need his services in the future but if I do he'll be my first call. Thanks again.

Kyle Called back immediately, was here in 15 minutes. Knew exactly what to do and was right. I…read morehighly recommend.

I filled out a request on 6/26 for estimate on updating one of three R22 central Air systems in my…read morehouse. Filled in all my contact info and after three days no call or email. I understand that this is a very busy season but not a call or email for just an appointment is not good. I do not understand why some companies even offer the option to fill in for a request on their web site. I filled out three other requests and with a day they provided me with an appointment. It's a shame because I liked the puppy sitting with the owner! Update on 07/1 I called again and this time I spoke with Christian who set up an appointment for 7/03 between 1-3pm.

Thank you to everyone at Therm A Trol in Blue Point NY for your professionalism... We are so…read moregrateful. Very dependable company ...we are 100% satisfied with every aspect of a job well done. The H Vac system is great!! Installed perfectly in a timely fashion. Immaculate when the job was done .. Thank you again . Mr. and Mrs. Jim Wenz Bayport NY

i needed emergency AC repair during a heat wave on a Thursday. I called around to a half dozen HVAC…read morepeople, no response or said they could come by the next week. Eddy was there that day, fixed the problem. I was expecting some crazy emergency rates, but no, Very reasonable. Highly recommend.

Eddy (and ECE) is the best. Reachable day and night he helped us through an emergency heating…read morerepair late night last night, and even followed up afterwards to make sure everything was continuing to perform as expected. Really appreciate the help and will be looking to Eddy for all my heating and cooling needs going forward. A++++.

I'd like to thank John and Jimmy from ZSL for their quick and efficient response time and service…read more With exceptional customer service, they explained in detail what the issue was and what they did to resolve it.They are very knowledgeable in there profession, and compassionate about the work. . I appreciate the hard work and effort put forth. Thank you!

Completed several projects this year. All we're completed quickly, efficiently and done right the…read morefirst time. Costs were a bit higher then average, but we'll worth it. ZSL explained everything and guarantees all their work.

Awesome people. Fast, courteous, and knowledgeable. Will be using them going forward for all my…read moreHVAC needs.

Donlon Bros technician came to the house, diagnosed our problem and refilled our freon in our split…read moresystem. It was determined we needed a new system installed. I have called twice with no response. Very disappointing and would not use them to install based on this experience...Frank

Lots of delays, missed appointments, damages, will not honor warranty…read moreWorst contractor I ever worked with in my entire life ! Stay away!,,

Total life saver! I'm a new home owner. Trying to save on oil, Well, I forgot about all that…read morenonsense during the holidays and ran out of oil over night and the burner would not restart. Called as an emergency and they prioritized me to get same day service. A totally awesome experience. Tech was awesome and got me up and running, I'll be calling for my yearly maintenance with these guys!