First of all, it is spelled out in the U.S. Federal Register this way: If the affected facility is a catalytic wood heater, the warranty for the catalytic combustor shall include the replacement of the combustor and any prior replacement of the combustor without charge to the consumer for:
(1) 2 years from the date the consumer purchased the heater for any defects in workmanship or materials that prevent the combustor from functioning when installed and operated properly in the wood heater.
(2) 3 years from the date the consumer purchased the heater for thermal crumbling or disintegration of the substrate material for heaters manufactured after July 1, 1990.
All combustors sold as a component of an EPA-certified wood burning appliance must be EPA approved. The Versagrid Firecat catalytic combustors are approved by the U.S. EPA.
The Versagrid Firecat catalytic combustors from Applied Ceramics Inc. carry a six year prorated Limited Lifetime Warranty. With a free replacement for the first 3 years if ever necessary.
You are given a limited lifetime warranty from Applied Ceramics which states, Applied Ceramics warrants to the consumer who purchases a Versagrid catalytic converter as a component in an E.P.A. certified solid fuel appliance, to replace at no charge to the consumer the Versagrid catalytic converter that ceases to function within three (3) years from the date of purchase by the original consumer, providing they receive a dated copy of the original bill of sale for the stove, along with the original Versagrid catalytic converter. Applied Ceramics also offers special prorated prices on the converter for the 4th, 5th and 6th years of the stove's life if ever needed.
Applied Ceramics Inc. couldn't make this offer, if they had any doubts about the longevity of the unit.