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Hot water isn’t always instant in busier times

Once you use all the stored hot water in your cylinder, you have to wait for some time to be able to use hot water again. Always buy a cylinder with the capacity to meet your hot water demands and needs.

Needs lots of space

Regular boilers need space for the water tank and the hot water cylinder. That’s why it’s not a good choice for smaller homes that don’t have much space. For smaller homes, a combi boiler is more suitable.

Installation can be costly

Because there are many parts to be installed around the house, a new boiler installation can be pricy. Aside from being expensive it can also take a lot of time.

It is all pretty simple. Basically, a regular boiler will take water from the tank to provide heating. It is important to place your tank as high as possible to have a better water flow in all the system.

A heat exchanger warms up the cold water once you turn on the hot tap or switch on the heating. After that the hot water moves to the hot water storage cylinder where it is kept and circulated. Then valves will direct hot water to the heating system or the taps and outlets.

Cold water runs through the combi boilers directly from the main water source. In order to produce heat, the gas fuel is burned. The heat is then transformed from the combustion chamber to the water through a heat exchanger.

Your thermostat would know when the temperatures drop in your house. Subsequently, it will send a signal to the combi boiler which would fire up and heat your home.

The minute the required heat is reached, your combi boiler would decrease the produced heat and keep the status quo. As a result, it will reduce your energy waste as well as keep your house warm.

A Combi boiler directs hot water to any outlet you are using such as a hot tap, a shower or a bath. When you turn off the tap, the central heating duties will be back in action.

Keep in mind that your Combi boiler directs hot water to the water outlets or the central heating, but not both at the same time.

Combi Boilers take water directly from the mains water supply in your home. To provide an appropriate water flow, they rely on the pressure coming from the mains.

So if the pressure from the mains is not strong enough, a combi boiler is not, therefore, suitable for your home.

A combi Boiler comes with two outputs; one for how water and the other is for home heating. Hot water for central heating takes less effort than on-demand hot water. That’s why it’s crucial to choose a boiler that corresponds with your hot water demands.

Another key point is that if you live in large home with many bathrooms, then a system boiler is what you need.

When we talk about boiler size, we do not mean its dimensions, but rather its power output.

The unit of measurement, used for Combi Boilers, is the kilowatt (kW). To clarify, the bigger the kilowatts, the greater the capacity of the boiler to match your demands for hot water and central heating.

We advise that you get a small (low power) combi boiler if you have a small home with only one bathroom.

On the other hand, you will need a much bigger boiler if you live in larger property with more than one bathroom.

Here’s what you need to know about Minimum kW Size:

When it comes to relying on a hot water storage cylinder, then both systems are very similar. Both of them keep a store of hot water ready for your use. However, the main difference is that a system boiler draws water directly from the mains. While, a regular boiler will take its water supply from a tank in the attic. In short, with the system boiler you do not need a cold water tank high up in the attic.

Firstly, a heat exchanger heats the water. Then it moves energy from the gas jets to the water. Once the water is heated, it is moved to the hot water cylinder where it will be stored. Even when you are using multiple taps and showers, a constant supply of hot water is always available.

There are many things to consider but one of the most crucial points is how much space do you need for a system boiler. In general, a system boiler is larger than a regular boiler so you need to make sure that you have sufficient space. What makes a system boiler bigger is the fact that it has a pump and an expansion tank. It’s worth mentioning that the additional parts would be covered by the manufacturer warranty. An airing cupboard is where the hot water cylinder most likely to be installed.

System boilers are perfect for homes with limited space because they do not need a header tank.