I'm posting this in the DIY section as I am a nonce when it comes to plumbing. I can stick a hose on a tap, or a straw in a can of coke and that's about it.

We have a combi boiler which does all the rads and the HW for our bath/shower room at one end of our house. We have a small immersion at the other end of the house (100ft away) which serves a shower room. In the middle is an AGA which does the HW for the kitchen and the washing machine. These don't nearly use all the hot water the AGA produces and the utilityroom with the storage tank gets very warm.

Question could we get a plumber to feed the AGA water to the small immersion tank so we can use the AGA hot water there too. Are there piping configuration / back-feeding probems we need to be aware of. I want as much info as poss so I know what to ask the plumber for and to make sure he doesn't just do it beacuse I'd like it done that way. Like I say I'm clueless about any practices and regs etc. (except for the electrical side)

It just seems a waste to run the immersion every morning for a couple of hours when there's stacks of water in the middle of the house.

Ta Scruff. Reckon the first one's the likely way forward as there's already a large cylinder /stogage tank behind the AGA, the secondary one is only titchy and can be boosted by the immersion if necessary. I'll get someone out to quote in the week now I know it a likely goer.

Thanks again