Based in Marietta, Qstarr Mechanical Heating And Cooling is a top-notch HVAC contractor that offers maintenance and installation of central air conditioners, boilers, furnaces, and heat pumps. If you're looking to install an HVAC system, give me a call on +14047485371. Before the start of any job, I’ll provide my certifications upon request so that you know I am on the up and up. Any contractor worth their salt will do the same, so you can be sure you’re hiring top-quality workers.