You’ll want to check for a manufacture date. This is usually situated on a label on the exterior of your equipment.
If your unit is newer than five years old, it might still be warrantied. At the same time, warranty terms and conditions differ manufacturer and installing company.
At Pardee Service Experts, we can verify your warranty state via a system inspection. We also provide HVAC service memberships in Charleston for residential heating and AC systems, regardless of system age or manufacturer warranty status.