Confirming Active Coverage Before Your 15-20 Year System Reaches End-of-Life
https://blogfreely.net/lithilszxt/h1-b-buying-hvac-systems-together-saves-money-only-when-both-units-are
Most HVAC systems last 15 to 20 years, but verifying your warranty coverage status before that system reaches end-of-life is critical to avoiding emergency repair costs