A combi (or combination) boiler was invented to try save space in the home. Its name is coined from its function, as it combines a single unit which serves two purposes - heating and hot water. A combi boiler works by taking water directly from the mains and providing you with instant hot water when turning the tap. Combi boilers are becoming increasingly popular in homes up and down the UK.
1. Space saving
A combi boiler is a combination of both a water heater boiler and a central heating boiler into one unit, which greatly reduces the space required to store both. Traditionally, most homes were served with a water tank and a boiler. The heated water in the tank would then feed to your taps and showers. This standalone system simply does both. In new builds or new boiler installations, they are often placed in areas such as attic/loft spaces to minimise pipework and space saving means in kitchens where they are traditionally placed.
2. High pressure water
For more enjoyable showers! As the water is provided to your taps and showers at mains level power, you can enjoy an increased water pressure. Those using electric showers, which takes cold water from the mains and heats it in the shower system, you will notice a huge difference in the power of the water coming through the shower if moving to a mains powered shower and a combi boiler. Of course, the drawback to this, if you boiler is ever on the blink - you're left without the means of showering as well as heating.
3. Reduced cost
Everything comes down to money and when we can make a saving for the same or better quality, we Brits jump at the opportunity. Being a single unit, combi boilers are easier and therefore cheaper to install in a property. They are also widely available, as are their parts. So should you be servicing a combi boiler for many years, any parts which do need replacing are likely to be that little bit cheaper.
4. Cleaner heating
Combi boilers are less likely to contribute to a build up of debris or sludge, this is because water is not left being stored in a tank and is only brought into the system when needed, via the mains. This therefore helps stop unwanted build ups which can be costly to clear and keeps the whole central heating and hot water systems operating more efficiently.
If you're looking to make the switch or simply replace your current combi boiler, the experts at Mayne Gas Heating LTD
are on hand to help! 
