Have an old Potterton kingfisher floor standing boiler in the corner of my kitchen [dead space normally, between units] it was secondhand when installed about 15 years ago [relative was corgi engineer and removed it during a job] if I want to replace is there a floor standing boiler thats suitable and have any regs changed preventing it being a straight exchange? If so any recommendation for boiler [will supply 9 rads and hot water in three bed end of terrace].