Q why do i need a replacement boiler? Serving new haven & fairfield counties in ct. Would you like to leave feedback about this page? Baxi customer support is open days a year mon-fri am-pm, sat and sun .am-pm call. Bge home offers % afue replacement boilers, the most efficient boiler available if upgrading or replacing your current boiler to a new high-efficiency boiler, we can help you find the best option for your needs. Great service and very knowledgeable.