David D. went above and beyond to ensure our furna...

David D. went above and beyond to ensure our furnaces were ready for Chicago's brutal winter this year. I used to have an annoying loud clap sound that came from the heater when it kicked on and one of our furnaces was failing repeatedly. He took the time to investigate our furnaces and humidifier thoroughly, diagnose, and correct all issues completely. I'll definitely use Shavitz in the future thanks to David's top notch service!