Looking to replace our conventional boiler and vented water tank with a system boiler and megaflo but builders and architects are saying get combi boiler?
We will have more than 3 baths in the house and about 6 bed room. I've done research and a system boiler coupled with largest megaflo system seemed most appropriate. However builders insist get a 42kw combi boiler and it should be sufficient for us and our architect says get 2 of them - our research states otherwise.
What do you suggest?