What are the different types of central heating boilers?

A home heating system is made up of a number of components, the most important of which is the boiler. There are a number of different types of boilers, all available from any merchant specializing in heating supplies in Droitwich.

As well as the boiler, the complete system consists of a tank which is used to store hot water in, a pump which moves the water through the system and a timer to turn the heating system and the hot water system on and off at predetermined times. There are also room thermostats, radiators to heat the house and a thermostat on the cylinder to control the temperature of the hot water.

Any of the boilers that are available from heating supplies in Droitwich work the same. A fuel, normally gas, is ignited and burns within the boiler. The flame heats water which runs through the boiler in a series of tubes, the other components then control and transfer the heat energy to any of the consumers in the system, such as the mixer faucets and radiators.

Types of boilers:

Combination: The combination boiler is the largest seller at heating supplies in Droitwich; approximately 70% of all the homes in the UK use this system. The combination boiler provides all the hot water required in the home and it does not need a separate storage tank. As a result of their compact size, they can be installed under a set of stairs or even in a kitchen cabinet. They provide an instant supply of hot water. They are not suitable for running multiple baths simultaneously so most are installed in homes with a single bath.

System boilers: The system boiler is often called a sealed system. It provides all the hot water that is required for both central heating and hot running water through a holding tank which is installed in the airing cupboard. A water tank in the loft is not necessary as it is with an open vent boiler design. System boilers are better suited for larger homes that have ensuite baths and multiple bathrooms on one or more stories. They give a high rate of flow however the hot water is not instant and once you have consumed all the hot water in the tank, you have to wait for it to reheat.

Open vent boilers: Open vent boiler systems are basically outdated now, but essentially require a storage tank which is often located in a cupboard and tanks in the loft. These systems are being slowly converted into a sealed system as more and more people are doing loft conversions and the tanks are taking valuable space.


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