You’ll want to check for a manufacture date. This is typically situated on a label on the exterior of your unit.
If your equipment is under five years old, it might still be under warranty. Having said that, warranty terms and conditions vary between manufacturer and installing company.
At Eveready Service Experts , we can check your warranty standing through a system inspection. We also provide HVAC service memberships in Richmond for residential heating and cooling equipment, regardless of unit age or manufacturer warranty validity.