In article ws.net,
Doctor Drivel wrote:
You are thick at times. I said that once below a certain depth the temp
is always the same. "No" seasonal changes, always the same. You could
get a large coil of 32mm MDPE pipe, take it off the mains and bury it as
deep as possible in the garden. Constant mains temp all the time.

Wouldn't you need two - one for each combi?

--
*How much deeper would the oceans be without sponges? *

Dave Plowman London SW
To e-mail, change noise into sound.