I was wondering if someone had any practical experience of the following boilers:
Worcester Greenstar 42CDi or Vaillant Ecotec 838 (newer version of 837)
Alpha CD50C or Vaillant Superstore 937.
The mains coming into my house is running at around 21-24L/min. I will have two bathrooms, one shower.
Clearly the Alpha + Superstore are slightly different kinds of combi boiler as they effectively have a built in storage tank. Is this a recent phenomenon?
Any thoughts comments, appreciated.