"Harvey and his team were nothing short of exceptional for my recent project. Their punctuality was remarkable, arriving on time and completing the work efficiently without any delays. Throughout the process, they provided thorough and timely updates, ensuring I was always in the loop. Their professionalism shone through in every aspect of their work, from the quality of their craftsmanship to their courteous interactions. Harvey's leadership and the team's collaborative efforts made a significant impact. If you're considering hiring them for your job, I highly recommend it. Their blend of skill, reliability, and professionalism is a rare find."
Stephen P. in December 2023
Window Cleaning, Post Construction Clean Up, Janitorial Services , and 1 more
"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!"
matt M. in August 2020
Plumbing, Electrical, Drains , and 2 more
"Very knowledgeable. Great work"
Linda D. in October 2023
Derry Heating & Furnace Contractors are rated 4.8 out of 5 based on 963 reviews of 963 pros.
The HomeAdvisor Community Rating is an overall rating based on verified reviews and feedback from our community of homeowners that have been connected with service professionals. See individual business pages for full, detailed reviews.
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