You’ll want to look for a production date. This is typically situated on a label on the outside of your system.
If your equipment is newer than five years old, it could still be warrantied. However, warranty terms and conditions vary by manufacturer and installing company.
At Climate Control Service Experts, we can verify your warranty state through a system inspection. We also have HVAC service memberships in Mobile for residential heating and cooling units, regardless of system age or manufacturer warranty validity.