Had Gildersleeve replace our 35 year old Open Loop Geothermal Florida HVAC system 2 years ago with a State-of-the- Art Climatemaster Closed Loop Geothermal. They competed against three other companies for the job. They were most definitely the best contractor that we have worked with in the thirty years and 6 homes we've had. Service and maintenance are also one of their strong points. Fast, prompt, reliable and responsive are a few of the words that come to mind to describe our experience with them. From the receptionist to the service technicians, they set the bar for professionalism in the trade. Of course, this is my opinion of them. I strongly doubt anyone could give less praise for Guildersleeve. Some may go further.