I've just received my annual gas usage statement. It came as a surprise to me that I'm using almost the average gas consumption in the UK. The average is 16,500kWh and I used 15,000kWh over the year. ...
I did a google search and came back with industrial products, but no residential prosucts. I have a System 2000 boiler and hot water tank. When the furnace is firing, the temp of the exhaust through ...