You’ll want to find a manufacture date. This is typically found on a label on the outside of your system.
If your equipment is newer than five years old, it may still be protected by a warranty. At the same time, warranty terms and conditions differ manufacturer and installing company.
At Niagara Home Services by Enercare, we can confirm your warranty state with a system inspection in Niagara Falls for residential heating and air conditioning units, regardless of system age or manufacturer warranty validity.