• November 2, 2019

What size kilowatt boiler do i need for my home?

What size kilowatt boiler do i need for my home?

What size kilowatt boiler do i need for my home? 150 150 Boiler Central

What size boiler do i need for my Home? -Power Calculator

To say that boilers are available in different shapes and sizes and offer higher or lower litres per minute would not be accurate enough. They are almost always rectangular.

However, they are available in a range of outputs, and knowing what size boiler for your home is extremely important.

So, what factors do you need to consider to find the right boiler before deciding on a boiler size or boiler heat that your home needs?

Here’s what you have to think about:

-The number of bathrooms

-The number of radiators

-The number of people in the home- the demand for hot water

Please note that the above information gives you a pretty good idea of ​​which boiler size and hot water cylinder you need.

By the way, people often refer to the “size of the boiler”. What this really means is its higher output, which is measured in kilowatts.

A Kilowatt or KW is a unit that is used to measure boiler outputs or flow rates.

Use our online quote tool to know the boiler size that your home needs. You’ll see fixed prices for boilers that are the perfect match for your home’s power needs.

So what size boiler do i need for my Home?

Choosing a suitable size boiler is extremely crucial for two main reasons:

1 – Does not meet the heating and hot water requirements of your home if you undercut it.

An under-sized boiler has difficulty in meeting your home’s central heating needs, resulting in a not powerful enough heating system for your radiators, hot water for your baths/ showers or daily needs.

Choosing the right size/ type of boiler will ensure that your home is warm enough and you always have enough hot water when you need it.

2 – Burning extra gas can easily waste a large amount of money

An overloaded offers no additional benefits. Although modern boilers adapt to lower requirements. You will have spent considerably more money on a boiler model that you do not need.

If the boiler you choose is not upscale, you may be wasting a lot of money on burning unnecessary gas.

Please Note: It may be worth considering a boiler with higher power (kW) and a larger hot water tank. If you are planning an extension of your home that would include additional showers.

What size combi boiler for my Home?

 You do not want a boiler with too little power to save money.

The size of the combi boiler for your home depends on its bathrooms. Check the table below.

More than 1 bathroom in your home? You need a boiler with more power to handle the higher hot water demand, especially when people tend to shower at the same time.

In other words, the more bathrooms you need heated, the larger the boiler you will need.

No. of Bathrooms
or Showers
Boiler Size
(minimum) 
Recommended
Boiler
 
1 26kW Viessmann Vitodens 050-W 29kW Get Quotes
2 30kW Viessmann Vitodens 100-W 30kW Get Quotes
3 35kW Viessmann Vitodens 050-W 35kW Get Quotes
3+ 35kW* Viessmann Vitodens 111-W 35kW Get Quotes

Which size combi boiler according to type of house:

Actually, you should calculate the size of the boiler based on the number of bathrooms / showers (as shown above).

However, consider the following as a rough guideline:

  Minimum kW Size  
What size boiler for… 1 Bath/Shower  2 Baths/Showers  
2 Bedroom House 26kW 29kW Get Quotes
3 Bedroom House 29kW 35kW Get Quotes
4 Bedroom House 29kW 35kW Get Quotes
5 Bedroom House 35kW 35kW Get Quotes

Do you have a large house with many bathrooms, but prefer a combi boiler?

Viessmann has managed to lead us into the future and to build a hybrid boiler – the Viessmann 111-W.

They merged the DNA of a traditional boiler and a modern boiler to create their own.

How much do boilers cost? We split it up into an article that will be easy to understand.

How to calculate what size the system or regular boiler of your home needs

Normal boilers are also called heat only boilers.

It is radiators that interest us here more than bathrooms.

What size boiler for… Boiler Size Calculation Minimum kW Size Recommended Model
6 Radiators 6x 1.5kW + 3kW 12kW Ideal Logic 12kW
8 Radiators 8x 1.5kW + 3kW 15kW Viessmann Vitodens 100-W 16kW
12 Radiators 12x 1.5kW + 3kW 21kW Ideal Logic 24kW
15 Radiators 15x 1.5kW + 3kW 26kW Viessmann Vitodens 100-W 26kW
20 Radiators 20x 1.5kW + 3kW 33kW Viessmann Vitodens 100-W 35kW

What about converting? From a conventional to a combi

Believe it or not, Combi boilers are great, cost effective to operate and deliver instant hot water without delay from your shower, bath or faucet.

No wonder the conversion to a combi boiler is the most common New Year’s resolution in the UK.

Although converting can be a pretty expensive job, our Company will offer you prices for Boiler upgrades that are pocket friendly.

Number of
Baths/Showers
Boiler Size
(Minimum)
Recommended
Model
 
1 26kW Viessmann Vitodens 050-W 29kW Get Quotes
2 30kW Viessmann Vitodens 100-W 30kW Get Quotes
3 35kW Viessmann Vitodens 050-W 35kW Get Quotes
3+* 35kW* Viessmann Vitodens 111-W 35kW Get Quotes

It is worth noting that the size of the combi boiler that you would need if you are changing from a regular boiler is no different than if you already had a combi boiler.

All you need to do is to consider your hot water demand as indicated above.

You want to buy a new boiler, but have no idea what size you need? Check our online tool.

How to get the best price on the right size new boiler

Without bragging, Purchase from us!

We are a nationwide online boiler installation company with over 5 stars that comes from a dandy load of satisfied customers.

We are an online business hence our operating costs are low, which means that we transfer these savings to our customers to make sure they always get the best deal for a new boiler whether it is a conventional boiler, system boiler or combi boiler.

Due to the volumes we have installed, we can also access the exclusive warranty of our partner manufacturers.

For example, we can offer 10 years of protection for the Viessmann 050-W Series, while your normal installer will give you 7 years. 

We are a nationwide online boiler installation company with over 5 stars that comes from a dandy load of satisfied customers.

We are an online business hence our operating costs are low, which means that we transfer these savings to our customers to make sure they always get the best deal for a new boiler.

Due to the volumes we have installed, we can also access the exclusive warranty of our partner manufacturers. For example, we can offer 10 years of protection for the Viessmann 050-W Series, while your normal installer will give you 7 years.

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