A lack of hot water may mean that there is a fault with the main immersion heater in your water cylinder. A reduction in the amount of hot water your cylinder provides could indicate a fault with the upper boost immersion heater, either way you will want to have the problem investigated quickly and a replacement immersion heater fitted in the shortest possible time. We are Manchester based and can often call out the same day to Manchester or Liverpool to investigate and rectify faults. Before you call, have a look at our Water Heater – Self Help page. The fault with the water heater may not require specialist repair, it might be the fault of a blown fuse or a tripped switch. If you do need our services we carry the most popular immersion heaters and are quick to respond, call us today.