Bought this book to help sort out my central heating problems, mainly on how to flush it out. I hoped to find all the information I need in printed form that I can read anywhere.
The 2 star rating because I feel the book has a misleading title, namely the "& Central Heating" bit, for it puts very little emphasis on central heating. This is a predominately a general plumbing maintenance book. I am tempted to give it only 1 star, but it might be unfair since it is not totally useless.
There is only one short paragraph outlining the difference between a combi boilder and a condensing boilder, no mention of open vent vs closed vented central heating, Y-plan scheme vs S plan or W plan etc etc are all missing. One cannot start to understand an existing central heating system from this book, let alone trying to upgrade or maintain it.
There are more detailed information available in various free diy websites, just they require time and effort to search and filter through.