The Pros and Cons of a System Boiler

//The Pros and Cons of a System Boiler

The Pros and Cons of a System Boiler

Householders decide to change their boiler for a number of reasons. It might be that their existing one is malfunctioning, old or inefficient.

When you’re choosing a new boiler, you have several alternatives to choose from. These consist of combi boilers, conventional boilers and system boilers. Each of these boilers operate in various ways and are matched to the size of the property.

System boilers are often known as sealed system boilers. Like traditional boilers, they have warm water cylinders. However, they do not have cold water tanks. System boilers are typically set up in bigger residential or commercial properties.

To help you to choose whether you require a system boiler in your house, we have created a list of their pros and cons.


Can supply hot water to several taps

System boilers can provide hot water to several taps all at once. They can do this without triggering a drop in water pressure. This is since system boilers heat water ahead of time, so when hot taps are switched on the hot water can immediately go to wherever it’s required.

This contrasts with combi boilers, which don’t heat water in advance and consequently struggle to heat sufficient water for multiple taps at the very same time. This can result in water that is not hot enough or low in pressure. So while combi boilers are fantastic for smaller sized houses, system boilers are more appropriate for larger residential or commercial properties, where hot water might be required from multiple taps at the same time.

system boiler

Takes up less space than a traditional boiler

System boilers use up less space than traditional boilers. This is because they do not have a cold water tank, whereas traditional boilers do. So if you wish to install a system boiler in your house, you just need to find space for a hot water tank and the boiler itself.

Compatible with solar water heater

Like traditional boilers, a lot of system boilers work with solar water heating systems. This is due to the fact that they have hot water tanks, which can be adapted or changed to heat water using solar power. Combi boilers do not have warm water tanks and are therefore not generally compatible. So if you wish to utilise solar water heating, a system boiler might be a great choice for you.


Only heats up water in advance

System boilers only heat water ahead of time. This implies that you have to have your boiler on a timer that you can set to heat water for when you typically require it, or you’ll have to remember to turn it on before you require it. This normally works well for individuals who have routine regimens, however if you want to use hot water at different times on different days, a system boiler may not be for you.

Hot water supply can run out

Another disadvantage to the way system boilers work is that the hot water they produce can run out. A system boiler’s hot water tank can only hold a certain amount of water, so if you use a big amount of hot water at one time it may end up running out. And due to the fact that system boilers can only heat water ahead of time, you’ll have to wait for the hot water tank to fill before you can have hot water once again.

Takes up more area than a combi boiler

System boilers take up more space than combi boilers. This is due to the fact that combi boilers do not require a hot water tank, whereas system boilers do. So if you have restricted space in your home, a system boiler may not be the very best choice.

So now you should know a bit more about system boilers and whether you should set up one in your house. If you desire to install one and need an engineer to fit it, we can assist. Complete our online form and we’ll link you with up to 4 professionals in your area. Or to discover other boilers, have a look at our information on combi boilers.

By | 2018-02-05T12:37:24+00:00 June 6th, 2017|Advice|