Very happy with Alcaide, complex installation, they looked for the way to go out on the roof. The old taps were rectified, with complex work on the tube outlet. In addition, the 12-month payment method without interest. Needless to say, they respected the price of the budget given a long time ago. Not very talkative installer, but he had been in Barcelona for 2 years !!!, in the end I even showed him some saying, excellent work on finishing the tubes, leaving the boiler running at 9:30 a.m. from 9:15 p.m. that ended! . Speechless!