You’ll want to look for a production date. This is usually located on a label on the surface of your unit.
If your equipment is newer than five years old, it may still be protected by a warranty. Having said that, warranty terms and conditions vary by manufacturer and installing company.
At Service Experts Heating & Air Conditioning, we can check your warranty status through a system inspection. We also offer HVAC service memberships in Raleigh for residential heating and cooling units, regardless of system age or manufacturer warranty status.