I have discovered i need a Danfoss Randall 3060 should I buy one on line or do I tell the heating engineer what i need so that they can bring it with them. Also could you give me some idea how long it will take to replace as costs go up with longer time.
Just wanted to say thank you for your answer Andrew. I will take your advice. It was very good and has taken away the stress I was feeling about getting this work done.