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Gas Safe Register is the official gas registration body for the UK, Isle of Man and Guernsey, appointed by the relevant Health and Safety Authority for each area. By law all gas engineers must be on the Gas Safe Register.

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What is the best combi boiler?

Combi boilers are the most popular boiler type in the UK as they combine your central heating system into one unit, which is great for saving space. There is a wide choice of combi boilers available with a range of brands available.

Get your quote online

Simply answer a few multiple choice questions about your existing boiler and we’ll give you a fixed price for a new boiler including all parts and installation[28]

Recommending the right boiler will largely depend on your home and needs. If you have a lower demand for hot water or a smaller home then a boiler with a lower output might be most suitable. The higher your hot water demands are the higher the output of boiler you will need. As a general guide you can learn what the best combi boiler is for you by considering what your needs are based on size, price and performance.


The size of your home will have a huge impact when determining what the best combi boiler is for you. Combi boilers are a great choice for a wide range of homes in the UK as they are powerful enough to deliver large amounts of instant hot water. However, if you have a very large home with a high demand for hot water then a combi boiler may not be a suitable option.


The price of a combi boiler is a major influential factor when deciding which boiler is best suited. It’s important to make sure that a new boiler installation is always performed by a gas safe registered engineer. If the price you are being quoted seems too good to be true, it could be that the engineer is not well qualified which could have huge consequences. To keep price down, you could consider installing the new boiler in the same place as the existing one and to avoid purchasing additional features that are not required.


Different boilers have different performance levels based the home they are heating. If you have a small home, the best combi boiler may be one with a lower output. Because the house is smaller, the demands on the boiler for heating and hot water will be less. In the same way if you have a larger home, you may require a boiler with a larger output as it will need to deliver a more powerful performance in order to supply the demand required.

If you’re not sure what the best combi boiler is for you then let us help you to choose. With nearly 20 years of boiler installation experience you can trust us to recommend the right boiler for you.

Want to talk your boiler options through?

A boiler is a big decision. If you want to talk through something in person, simply fill in the form below to give us an idea of where you are and one of our local advisors will give you a call back quick-sharp.

0203 763 2682

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[28] Exclusions apply. See

[79] Online discount is available to domestic gas and LPG customers who receive an online quote for all boiler brands excluding Vokera. Discount will be applied as long as the quoted price is still applicable at the point of sale. Online discounted price is only available for the duration of the 14-day quote validity which starts from the day the quote was given. Offer is not available to Help-Link UK Ltd employees.

Online discount can be applied as follows:
All boiler manufacturer types excluding Vokera are eligible for a 5% discount off the final quoted price. Conventional to combi boiler swaps also qualify for an additional £50 discount after 5% initial discount is applied.

This offer cannot be used in conjunction with any other offers.
Offer available from April 2017. Any boiler quotations before this date will not be eligible for the discount post purchase. Help-Link UK Ltd have the right to withdraw or change the offer at any time.
Online discount is automatically applied when the customer gets a quote using the online quote system at and as long as the customer meets all the above criteria.