about hot water cylinders
A cylinder is a hot water storage device normally found in an airing cupboard. It is sometimes heated by an immersion heater, which uses electricity to control the temperature of the water using a thermostat with a safety cut-off to stop the water from overheating. There are several different types of hot water cylinder:Direct or indirect cylinders
A direct cylinder is used in houses with no central heating, where the water is heated directly by an immersion heater. The water in an indirect cylinder is heated indirectly by central heating or solar panels in addition to an immersion heater.
Economy 7 cylinders
An economy 7 cylinder normally has two immersion heaters (elements). The lower element heats the water overnight using reduced cost electricity, while the upper element keeps the hot water topped up during the day. They are usually used in houses powered by electricity alone.
Solar cylinders
A heating system powered by solar panels needs a solar cylinder with a coil. Switching to solar energy can save you up to 70% on hot water costs, so if you need a new hot water cylinder this could be the best time to think solar. Ask rbGas for a free estimate today.
Unvented cylinders
An unvented cylinder is used to increase the water pressure in showers and taps without using a pump. It does not need a water tank in the loft, so there is less risk of dirt getting into your hot water system. Ask rbGas for a free estimate today.
