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What Is A Combination Boiler?

By Futli @futlim

There are many different types of domestic boiler available, however the most common gas boilers are Combination (often referred to as Combi), Regular and System boilers. Each of them differ in configuration, so it’s important to know what kind of boiler you will need before contacting a heating or plumbing engineer. This article will focus on Combi boilers and will outline who they are suited to, how they work and whether it’s the right boiler for your property.

Combi Boilers are the most energy efficient gas boilers available. As they are also the cheapest to install, they are the most common boiler found in domestic applications. Their price and quality can drastically vary, with low quality combination boilers starting at around 400, to the most advanced and high end of devices costing thousands. You should be looking to spend between 700 and 1200 on a combination boiler to ensure you’re getting a high quality, energy efficient and reliable appliance.

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So how does a Combination Boiler work?

A combi boiler uses an internal heat exchanger to heat the water passing through the boiler direct from the mains supply. A combination boiler can provide both hot water to taps and also heat a central heating system. As both CH (Central Heating) and DHW (Domestic Hot Water) are supplied from this one singular space-saving device, there is the huge advantage of not needing a hot water storage tank. Combination boilers can often control the temperature of the hot water and the central heating individually and as the water comes directly from the mains supply, rather than a storage tank, a much higher water pressure level can be achieved.

How can I tell if I need one?

The main incentive people have to get a combi boiler is to save money on installation costs and also save space. You won’t need a hot water cylinder in your loft or airing cupboard and the combi boiler can in most cases simply be hung from the wall. Some combination boilers are so small that they can even be installed within a standard sized kitchen cupboard. As the water is only heated when you need it, it also saves money on fuel bills. They are the most common choice for most new households. However, there are down points. As the water is heated on-demand, rather than stored in a tank and constantly kept warm, there is often a delay in the hot water arriving at the tap. However, on higher end combination boilers this delay is only a matter of seconds.

What types of properties is it for?

A combination boiler can be used in nearly all domestic properties. Large properties with more than one bathroom where the hot water demand is very high might benefit from a Regular or System boiler, however a few high end combination boilers can cope with the demand but are very expensive.

Overall the combination boiler is a very safe and reliable choice for cost efficient water heating. If you have a small to medium sized property then this is the natural choice, installation is quick and easy in comparison to other boilers and the energy saved from only heating the water when needed is vast.

What Is A Combination Boiler?

Guy Andrews at PGS Plumbers London writes articles from his experience in the plumbing industry and information provided by a team of elite london plumbers. He focuses mainly on articles helping domestic London home owners save money with their plumbing and heating requirements.

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