Hi Mark Just want to let you know that we have now made the final payment and to let you know that Dave and I are really happy with the heating system that has been installed. I consider it one of the best things that we have done with the house. One of the things that I was a little concerned with is that we have very high ceilings in the house and I wondered how well the heating would be distributed through out the house and rooms. But the hydronic heating has been fantastic at creating a very even heat which makes the house feel very warm and comfortable. It is also surprisingly quick to come up to temperature when it has been switched off. Regards Rowan and Dave