How do I know if I have an existing warranty on my furnace, air conditioner or HVAC system?Locatethe label on the exterior of the equipment for a manufacture date. Equipment less than five years old may have a warranty, but also may not depending on the make. Warranty terms and conditions differ by manufacturer and the installing company. Golden Seal 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 how old your equipment is or manufacturer warranty status.