Warranty coverage begins at the date of installation. In the case of new home constructions, Warranty coverage begins on the date of first occupancy of the dwelling or six months after the sale of the Product(s) by an independent, authorized HHT dealer or distributor, whichever occurs earlier. However, the Warranty coverage shall commence no later than 24 months following the date of Product shipment from HHT, regardless of the installation or occupancy date.
The term “Lifetime” is defined as 20 years from the beginning date of warranty coverage for gas appliances. This time period reflects the minimum expected useful lives of the designated Component Parts under normal operating conditions.
See the full warranty here.