I had a burst hot water service late at night. I rang a friend who recommended David. I rang David and he advised me to turn off the system and he would be out first thing to fix it. He turned up early next morning and replaced the unit. Fast, efficient and friendly service. He left me a receipt and said I could fix it up when I had time to get to a bank. I received a compliance certificate and a thank you for paying so quickly, in the mail.