The prices of these vary according to the different size and capability levels of each as a guideline, the cost of baxi boilers range between. Registered address: unit 81, centaur court, claydon business park, gt blackenham, ipswich, ip6 0nl. Q why do i need a replacement boiler? Kentucky | indiana | ohio | tennessee | georgia | alabama. The combi wall may be eligible for rebates in your area.