3 Reasons to Consider Upgrading to a System Boiler

Individuals opt to replace their boiler for a range of factors. It may be that their existing one is malfunctioning, old or inefficient.

When you’re picking a brand-new boiler, you have various options to choose from. These include combi boilers, conventional boilers and system boilers. Each of these boilers run in numerous ways and are matched to different home sizes.

System boilers are otherwise known as sealed system boilers. Like standard boilers, they have hot water cylinders, but they do not have cold water tanks. System boilers are usually established in larger domestic homes or business premises.

To help you pick whether you require a system boiler in your home, we have put together a list of their benefits and drawbacks.


Can supply hot water to a number of taps

System boilers can supply hot water to a variety of taps at one time. They can do this without setting off a drop in water pressure. This is due to the fact that system boilers heat water ahead of time, so when hot taps are turned on the water can immediately go to any location it’s required to.

This contrasts with combi boilers, which don’t heat water in advance and as an outcome struggle to heat appropriate water for many taps at the very same time. This can cause water that is not sufficiently hot enough or low in pressure. So while combi boilers are great for smaller sized houses, system boilers are much better suited for bigger domestic or commercial properties, where hot water might be required from numerous taps at the exact same time.

system boiler

Takes up less space than a standard boiler

System boilers consume less space than standard boilers. This is since they do not have a cold water tank, whereas conventional boilers do. So if you wish to set up a system boiler in your house, you simply need to find room for a hot water tank and the boiler itself.

Suitable with solar hot water heater

Like standard boilers, a lot of system boilers work with solar water heating systems. This is because they have hot water tanks, which can be to heat water using solar energy. Combi boilers do not have hot water tanks, and are therefore not normally suitable. So if you want to make use of solar water heating, a system boiler may be an outstanding option for you.


Only warms up water ahead of time

System boilers simply heat water ahead of time. This means that you need to have your boiler on a timer that you can set to heat water for when you usually need it, or you’ll need to remember to turn it on before you require it. This usually works well for people who have regular regimens, however, if you prefer to utilise hot water at various times on different days, a system boiler may not be for you.

Hot water supply can run out

Another downside to system boilers is that the hot water they produce can run out. A system boiler’s hot water tank can only hold a set amount of water, so if you make use of a substantial quantity of hot water at one time it might end up running out. And due to the fact that system boilers can just heat water ahead of time, you’ll need to wait for the hot water tank to fill before you can use the water again.

Uses up more space than a combi boiler

System boilers take up more space than combi boilers. This is because combi boilers do not need a hot water tank, whereas system boilers do. So if you have limited room in your house, a system boiler may not be the absolute best choice.

So now you should know a bit more about system boilers and whether you should fit one in your house. If you desire to set one up and need an engineer to fit it, we can assist. Fill out our online form and we’ll link you with approximately 4 experts in your local area. Or to discover other boilers, take a look at our info on combi and conventional boilers.

Emily Rivers

Emily Rivers is the Customer Experience Manager at Quotatis. She informs customers of the latest developments in a range of products so they can make the best choice for their homes and ensures they get the best out of our service.

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