You’ll want to find the date it was made. This is usually located on a label on the exterior of your system.
If your system is less than five years old, it could still be under warranty. However, warranty terms and conditions vary between manufacturer and installing company.
At Komfort Air, we can check your warranty state via a system inspection. We also offer HVAC service memberships in Charlotte for residential heating and cooling units, regardless of system age or manufacturer warranty validity.