This product has a warranty of 5 years compared to the non-advance product it benefits from a rear flue option to reduce boiler footprint and improve its look a pump overrun is not required, therefore a boiler can be installed with minimum disruption. Admissions, catchment areas, find schools, school travel, attendance, childcare & nurseries, teaching jobs. We've been locally owned and operated since 1946. Good hub! will keep this bookmarked and handy. A full modulating.