welcome to Stainless-Steel-Rails .co.uk
24 HE Baxi Potterton Main Combi Boiler High Efficiency Eco Condensing Boiler (HE) 24HE

They may be more expensive to install, but you will:
No. You should have a condensing boiler fitted if it is reasonable to do so, but the law recognises that non-condensing boilers are acceptable if it would be too difficult to install a condensing boiler in your home. Your installer will tell you whether your circumstances are too difficult.