Hi All

I have installed and tested a low cost woodstove adapted to make it clean burn and added a carefully positioned back boiler. The back boiler feeds by gravity into a thermal store from which mains pressure hot water is generated via a plate heat exchanger whenever the store is above 50C. If below this hot water is heated by my gas combi boiler as per usual by switching solenoid valves. I have now added a second plate heat exchanger to feed heat into the gas central heating circuit which is enough for three rads. My gas use is now down by 80% as the wood is free! and I do not require heating in kitchen were the stove is and in the room next door. I reckon the cost of the whole install was about £600 using as much eBay parts as possible and pluming it in my self. I have an option of solar input as the tank has a standard coil in the lower half. Just waiting for the price of evacuated solar heating tubes to fall before completing the system

Where did you get your thermal store (and what size was it). I'm looking for another one now.

Thanks.