I'm having an Ecomax (heating only, keeping old hot water tank) put into my smallish three bed terrace house in Oxford, and just wanted to check a few things after getting conflicting info from two installers.
The one my installer is choosing is an 18kw one - is this too big? The other guy says I should have a 13kw one, but the first one says the
18kw is fine, and can be set at the kilowattage you choose. Obviously I'd like the system to run as efficiently as possible as it is certainly not cheap! Any tips related to this? Also, the first guy is intending to remove the make up tank from the loft, and the second says this isn't necessary if I have the 18kw boiler.Thanks for any help!