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I've drained my central heating system a number of times in the past to replace rads / re-route pipes. Each time I've switched off the combi boiler (Vaillant ecoTEC pro 28 combi) completely. I was wondering if it's possible to leave the boiler *on* in 'direct hot water only' mode when the...

Hi, I'll be installing a shower valve on a tiled, drywall. The shower valve has compression fittings for the hot and cold supply. I'm wondering if I can save myself some trouble by using flexible hoses fitted with a copper pipe end for the supply so I don't need to be so accurate with the...