we recently had simply warmer install a new boiler after useing the boiler that was installed in our house 30 years ago we had been reseching company's for near 12 months and decided to use simply warmer because of their competative price but mostly their boiler quality and the hive system they arrived at our house on the Friday and installed the boiler in a cuboard upstairs as the old one was in the kitchen and we needed the space two companies one being British gas said this whould be extremely expensive but again simply warmer did this at a very reasonable price the two men finished the same day and you would never no that they had been in the house there work was amazing also my wife and I had to work so when we a river home it was done I would recommend simply warmer as their work is second to none thanks again. Allen Heron