There are lots of different boiler systems available, including combination boilers (combi boilers), system boilers and open vent boilers. Each of these systems has pros and cons, and when you are purchasing a system for your house, you should always consider all the options before committing to a purchase. However, combi boilers are better sorted to some homes and business than others.
If you have a limited amount of space in your house, a combi boiler may be a great option for your home. A combination boiler is so named, because it combines a water heater system with the central heating system, so there is no need to have two separate devices to do these tasks, meaning that you save a lot of space in your home. This type of boiler does not require a cold water storage tank or a tank to store pre-heated hot water, meaning that you save even more space over a boiler system like an open-vent system. There is also no need to have a large loft area where the cold water storage tank would have to be sited. This frees up valuable space in homes where there is already only a limited amount of space available.
These boilers are also great for people who do not want to have an unsightly boiler spoiling the decor of their home. Although everyone has to have a boiler or other heating device, some people do not like to be able to see them. A combi boiler is small enough to fit into an average-sized kitchen or bathroom cupboard, so it can be kept out of sight, but is also easy to access if you need to get access to the boiler for a service check.
Combi Boilers systems are also good for people who have to live with a very tight energy budget. The boilers heat water very efficiently, and the fact that there is no need to have heated water sitting around in a tank, means that heat energy is not wasted as it escapes from the inactive tank.
Although combi boilers are great for the needs of some households, there are places where this type of boiler may not be the best option available. Although combi systems are great at instantly heating water for hot water taps, there are limitations to the amount of water which can be heated at any given time. If you live in a home where two or more bathrooms may be in use at the same time, a combi boiler system may not be appropriate for you, as it will struggle to produce enough heat for all users. These boilers may also be unsuitable for areas where there is very low water pressure, because all water is delivered at the same water pressure as that of the mains. In some places, it is possible to get a device which increases the water pressure enough so that it is suitable for use with a combi boiler, but this is not suitable for everyone.