What is covered under the ZWB 42-3 warranty if I don't register the boiler?

Without registration, you receive a one-year limited warranty covering defects in workmanship or materials with no labor charges included. From years 2-10, the heat exchanger is covered against leaks, and from year 11 onwards, the same pro-rated warranty applies as registered units. However, failure to register will not reduce warranty coverage if you purchased the boiler in Florida or certain other jurisdictions.