You’ll want to look for the date it was made. This is typically 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 vary between manufacturer and installing company.
At Levy & Son Service Experts, we can confirm your warranty status via a system inspection in Dallas for residential heating and air conditioning units, regardless of system age or manufacturer warranty standing.