A refreshingly enjoyable experience from begin to end. Great boiler choice at a fantastic price with extras included, easy to use and clear website and the best bit of all a professional, fuss free installation exactly as promised, on time and followed up promptly with paperwork including registering for guarantee. Basically, you choose the boiler (with phone or online help if required), pay and then sit back and th rest is ALL taken care of professionally, in may case within 3 days too. In summary, this must be the best online innovation yet for a traditionally stressful process - I can't recommend Heatable enough base on my experience. By the way the Veissmann boilers are great, very quiet and efficient - top German quality.