When it comes to energy-efficient power transmission for HVAC systems, nothing compares to Gates synchronous belts. Our complete line of OE-quality synchronous belts is designed with a variety of tooth grip profiles to fit your HVAC application, helping to prevent slips, reduce the need for retensioning, retain energy efficiency over belt life, and more. No oil. No stretch. Virtually maintenance-free. Gates HVAC synchronous belts help keep your heating, ventilation and cooling systems running as they should.