You’ll want to check for a manufacture date. This is typically located on a label on the exterior of your system.
If your system is less than five years old, it might still be protected by a warranty. Having said that, warranty terms and conditions differ manufacturer and installing company.
At Service Experts Heating & Air Conditioning, we can check your warranty state through a system inspection. We also have HVAC service memberships in Ocala for residential heating and AC units, regardless of unit age or manufacturer warranty standing.