Introduction To Boiler Sizes

There are three main types of boilers, system, combi, and regular. All these are available in different models that run on gas, LPG, or electricity. It is essential to learn about these types before picking the best size for your home.

System boilers take water from the water mains but require cylinders for hot water storage. If you have a large house, you should consider getting a system boiler.

Regular boilers are common in older houses and require a complex pipe system. They are fed with cold water from a tank in the loft and heat the water for the storage cylinders and the central heating system. Regular boilers are not a great choice if you do not already have the pipe system pre-installed in your home.

• Type of boiler

As mentioned above, the system and regular boilers store hot water in a cylinder and make great choices for homes that need a lot of hot water. Take time to think about the number of bathrooms you have in your house and how much hot water is used in the kitchen. If you live alone in a small house, a combi boiler will work for you.

• Total number of radiators

You should also consider the number of radiators you have in your home. If you have many, you will need a higher output rating to heat more water.

• Bedrooms

The number of bedrooms you have in your home will also determine your boiler size. If you have many bedrooms, you will need a larger boiler.

• Bathrooms and number of people

If you have a high demand for water in your house, you will need to install a boiler that stores water in a cylinder.

Combi Boiler size

Combi boilers have to provide water on demand, which is why they are the biggest. They have two different output ratings; central heating output and domestic output rating. Regular and system boilers only have the central heating output because they store water for domestic use in a cylinder. You can choose your combi boiler depending on the number of radiators you have in your house.

If you have 10 or less, you need a boiler with 24-27kW central heating output. In case you have between 10 and 15 radiators, you need a 28-34kW boiler and a 35-42KW boiler if you have 15-20 radiators. The best combi boilers include Ideal Vogue Max Combi, Baxi 800 Combi, Worcester Bosch Greenstar i Combi, and Vaillant ecoTEC plus Combi.

System Boiler

If you are using a system boiler, make sure that you check the number of radiators in your home. A home that has 10 or fewer radiators needs a 9-18kW boiler. One that has between 10 and 15 radiators needs an 18-26KW boiler. If you have a larger house with between 15 and 20 radiators, you will need boilers with 27-40kW output. The best system boilers include Baxi 800 System, Worcester Bosch Greenstar Si, Vaillant ecoTEC plus System, and Ideal Logic Max System.

Regular Boiler

Regular boilers with an output of 18-26kW are required for homes with 10 or fewer radiators. If you have a house with more radiators, for instance, 15-20, you will need a boiler with a 27-40kW output. The best system boilers include Ideal Logic Max Heat, Vaillant ecoTEC plus Regular, Baxi 400 Heat, and Worcester Bosch Greenstar Ri.

• Old Boiler Size

An excellent place to start when deciding your boiler size is the size of your original boiler. You may need a larger boiler if you have added bathrooms in your house or are planning to expand it. If you have more people in the home, you may need a bigger boiler too. Take your time to consider all these factors before deciding on the boiler size.

• Flow Rate

If you have a high flow rate, you need a boiler with a large output. The flow rate refers to how much water flows through your pipes per second. In case you have a lot of water flowing through your pipes, your boiler will need to work harder to heat it all.