We've been using Slavic for the past two years to service a complicated (and poorly installed) radiant in-floor heating system, but we recently decided to completely replace our old system with a new boiler. After bringing in a number of consultants to look over our old unit, Slavic was the only person who actually understood our problems and how to correct them. He managed to help us get two years of extra use out of a failing system and then did an amazing job installing the new boiler. At the last minute, we also asked him to install a split A/C unit and he was incredibly accommodating. Furthermore, all the products he recommended we use have turned out to be extremely efficient and of very high quality.
Slavic was punctual, stuck to his initial quote, and very respectful of our time and space. He's a true professional and knows more about these systems than anyone else we've ever encountered. We will definitely recommend him to all our friends and continue to use his services in the future.