• January 20, 2020

Best Boiler for a 4 Bedroom House

Best Boiler for a 4 Bedroom House

Best Boiler for a 4 Bedroom House 150 150 Myles Robinson

What is the Best Boiler for a 4 Bedroom House?Best Boiler for a 4 Bedroom House Compare Boiler Quotes

Combination boilers, know as Combi boilers are available in three different sizes:

25kw – 28kw, 29kw – 35kw and 36kw – 43kw.

  • As a guide most apartments and smaller properties , with up to 8 average size radiators and 1 bathroom will require a 25kw – 28kw Combi Boiler.
  • For a larger property with 3-4 bedrooms and up to 16 radiators, 1 bathroom and one ensuite bathroom, a 29kw- 35kw Combi Boiler would be installed.
  • A 36KW – 43KW Combination boiler would be for a large property with anything up to 22 radiators and more than 2 bathrooms.

Combi boilers are a small, compact, cost effective, energy efficient, easily fitted boiler that requires no hot water cylinder or cold water tank in the loft.

The disadvantage of the combi boiler is “if you often run hot water in 2 or more different rooms at once this would not be the boiler for you.”

This is because the Combination boiler heats water directly from the mains when you turn the hot tap on.

A system boiler with an unvented cylinder could be a better option for you as they store hot water rather than taking it from the mains.


Best Combi Boiler for a 4 Bedroom House with 1 Bathroom

There are so many Combi Boilers on the modern market now.

The question is: Does every boiler suit any size property? The answer to this is “No”.

Which heating and hot water system is best for you?

Combi boilers are a perfect central heating system for a home with 1 bathroom because as soon as you turn the hot tap the water comes from the mains.

Here we will mention some of the best most suitable combi boilers for this specification:

Baxi boilers or Ideal boilers have both been around for over 100 years, both have a large range of boilers for you to choose from and both are gas safe registered with a good length warranty.

So how do you choose between Baxi vs Vaillant vs Ideal?


Take into consideration: 

Price, Installation Costs, Warranty, Size Dimensions, KW Options, Wall Mounting, Efficiency Rating and Flow Rate.

Price is often what we make our final decision on but the cheaper one is not always the boiler which should win.

This doesn’t mean to say it will be the cheaper boiler in the long run or the boiler with the cheaper installation costs.

Warranty, Ideal warranty has 7 years covered with full parts and labour.

Baxi has 10 years warranty but doesn’t include anything else.

Efficiency, This is basically down to how you manage your heating and your energy bills.

Size, Dimension and Flow Rate, this refers to the output rather than the physical size. Do not just go for the most powerful boiler as this could be a waste of energy and a drain on the bank balance.

29KW-35KW is what we recommend for a property of this size.



Ideal wins! This time round the smaller price tag has won, this is because of the 29Kw-35kw output, this was a slightly higher output than Baxi and you have 7years warranty covered for everything rather than a 10 year warranty which only covers the unit itself.


Best System Boiler for a 4 Bedroom House with 2 or More Bathrooms Best Boiler for a 4 Bedroom House Compare Boiler Quotes


As we now know a combi boiler would not be suited for this specification but we do know a System boiler for a large house like this would be well suited.

A system boiler has required components built into one unit but has a separate hot water tank to store the water, this cylinder means you will have a better flow of water pressure when using more than one tap at a time.

Which is the best rated boiler and which type of boiler model do you choose? The price of the boiler is also a high deciding factor.

Worcester Bosch and Vaillant are the top 2 boiler brands but which do you choose out of the 2?

There is also Intergas Compact HRE SB 40 System Gas Boiler, Viessmann Vitodens 200-W System Gas Boiler and Vokera Evolve S System Gas Boiler.


Take into consideration: 

Price, Installation Costs, Warranty, Size Dimensions, KW Options, Wall Mounting, Efficiency Rating and Flow Rate.

Price, Worcester Bosch Greenstar 35CDI wins on the initial price but this doesn’t mean to say it will win with the overall price when you look at efficiency, warranty and output energy.

Warranty, this will help your peace of mind in the long run if any problems do occur so really take this in to account when considering purchasing.

Worcester Bosch boiler covers you against any manufacturing or material faults for 2 years.

Vaillant does cover you for 5 years warrant and can be extended for 7-10 years BUT only covers you for failure of parts and NOT if this is due to water damage.

Efficiency, you can manage your heating to help with the energy bills and reduce the impact on the environment by only having the heating on when needed.

This can be controlled very easy in this modern day and age by a smart phone. You can sit in your office and switch the heating on ready for when you get home!

To ensure you boiler is running energy efficiently you should have if serviced yearly by a gas safe registered engineer. This will also help with your warranty to identify any faults that could occur and cause a problem.

Output, for a property with 2 or more bathrooms you need 36KW – 43KW.

Vaillant has slightly more power to win this part.


Conclusion: Best Boiler for a 4 Bedroom House Compare Boiler Quotes

Worcester Bosch Greenstar 35CDI wins! The shorter warranty but covered for more issues with its great value for money and energy efficiency rating has been the overall winner for us.

If you have any more queries on which boiler would be best suited for you please fill in our contact form and somebody will contact you as soon as possible to help and advice you. We also have guides on the best boilers for 3 bedroom homes and the best boilers for 2 bed homes to help you decide the right boiler for your home.


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