I'm having a complete new system installed and my plumber has recommended the Vaillant EcoTEC Plus 831
My plumber says this model is one of the best, but I've read some mixed reviews, has anybody got anything positive/negative they can tell me about this combi?
My plumber says this model is one of the best, but I've read some mixed reviews, has anybody got anything positive/negative they can tell me about this combi?