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Renewable Energy

Hot Water Cylinders

Picture of various hot water heating cylinders

Whether you have a vented hot water cylinder or an unvented hot water cylinder Calder Services are on hand for all your repair or replacement needs. If you have a leaking hot water cylinder then get in touch with our friendly and efficient customer care team and we will make arrangements to repair or replace it as quickly and efficiently as possible.

Worcester's high efficiency cylinders help you reduce your energy costs and lower carbon emissions. Worcster Greenstore unvented cylinders offer significant performance improvements over traditional cylinders. They come in a wide range of capacities from 90 to 300 litres so it’s easy to find a size that suits your home and lifestyle. They are highly insulated to reduce loss of heat and will give you the hot water you need quickly. With a 25 year guarantee, Worcester cylinders are manufactured by Bosch ensuring the highest quality.

Calder Services can also repair or replace a wide range of Gledill vented and unvented hot water cylinders, including their popular StainlessLite range. Whether you are looking for a cylinder to cope with the demands of a growing family, or a central plant option suitable for a new housing development, we can help.

Types of Hot Water Cylinder

Vented Hot Water Cylinders

Vented hot water cylinder systems are the most common hot water system in the UK. The system comprises of a cold water header tank (storage tank) situated usually in the loft with a copper hot water cylinder located in an airing cupboard. The hot water cylinder is supplied by water from the header tank which is kept topped up from the main water supply. The water in the copper water cylinder is heated either by an electric immersion system or by a central heating boiler (or both). Water in the copper cylinder is used by the hot taps throughout the home.

The term 'vented' means that the header tank in the loft works also as an expansion tank - water in the copper hot water cylinder heats up and expands. Any excess water goes back into the header tank where it is safely vented away preventing a build up of excess pressure.

Unvented Hot Water Cylinders

Unvented hot water cylinder systems comprise a pressurised hot water cylinder which is supplied directly from the main supply. A major benefit of this system is that both hot and cold water are supplied at mains pressure to showers and taps throughout the home.

Mains supplied cold water flows into the cylinder and heated. When a shower or tap is turned on then the hot water is delivered at mains pressure.

The water cylinder includes and expansion tank and pressure valve to allow safe hot water expansion.

Confused over which system you have or need?

Calder Services has been operating from the same village, Whalley, for over 35 years. Our reputation for quality and reliability is very important to us so we will not let you down. Please get in touch with us to discuss your hot water cylinder requirements.

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