Keep Your Workplace at a Comfortable Temperature HIRE A RELIABLE COMMERCIAL HVAC COMPANY IN DOYLESTOWN, OH K3 Mechanical offers commercial HVAC repair services in Doylestown, Ohio and surrounding areas. If your commercial HVAC system isn’t functioning properly, we can repair it. We have the tools and experience needed to keep your HVAC system working efficiently throughout the year. We repair and maintain all kinds of HVAC systems, from AC units to boilers. We specialize in repairing hospital HVAC systems. Call 330-658-7786 now to schedule emergency AC or boiler service. You can count on our commercial HVAC company to repair your HVAC system quickly and correctly.