How do I know if I have an existing warranty on my furnace, air conditioner or HVAC system? Locate the label on the outside of the element of your home comfort system for a manufacture date. Equipment less than five years old may have a warranty, but also may not subject to the manufacturer. Warranty terms and conditions vary by manufacturer and the installing company. Service Experts Heating & Air Conditioning can determine the warranty status of your heating and cooling system via System Inspection. We also offer a Platinum PLUSTM Protection Plan for home heating and air conditioning systems, regardless of the equipment age or manufacturer warranty status.