I’m pleased to say that after 12 years we have not had to use our back up LPG gas infinity system once. The Marshall has been a constant source of hot water which has kept us with our family of eight needs! The supply of good dry wood is so important and because we run a building business we have managed to meet this requirement over the 12 years. In the summer months we heat the water once every two days, every day in the winter / shoulder seasons. I’m very happy with our decision as are our teenagers with their long showers.