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General boiler info

Why should I consider replacing my boiler?

We understand that buying a new boiler is a big investment, and you need to be sure of getting it right.

We explain the reasons why you may want to replace your boiler, how to decide which model of boiler to choose, what controls and accessories to consider and recommend how to get your new boiler installed.

Energy efficiency

In 2005, the Building Regulations changed to require all newly installed domestic boilers to be high efficiency condensing boilers. Condensing boilers are typically at least 25% more efficient than non-condensing boilers, which means that you get more useable heat from the fuel you burn. With modern boilers over 90% efficient, you will save money on fuel bills – up to £305 a year, according to the Energy Saving Trust when installed with programmer, room thermostat and thermostatic radiator controls (TRVs). 

The cost of repairing your boiler is more than replacing it

If your old boiler is costing you more to repair than it would to replace it, it may be time to say goodbye to an old friend and hello to a brand new model. Many manufacturers offer long warranties with new boilers, which will give you peace of mind. Be sure to read the terms and conditions carefully, because most manufacturers, including Baxi, require an annual boiler service to be carried out to keep the warranty valid.

You are selling your home and want to increase its value

While having an old boiler may not be a deal breaker when you are selling your home, replacing it with a new high efficiency model is a great way of getting a higher energy efficiency rating on your Energy Performance Certificate (EPC). It may also be attractive to potential buyers who know they won’t have the upheaval of getting the boiler replaced themselves. It is also one less reason for them to negotiate the price of the property!

You are extending your property 

Before you start work you should reassess your heating requirements and check if your existing system is large enough to cope with the extra rooms you intend adding. You will have to comply with Building Regulations and include energy saving measures, such as insulation, low energy lighting and thermostatic radiator valves (TRVs) on any new radiators. It is probably a good idea to discuss this with your Gas Safe registered installer, who will be able to assess the extra space that needs heating, any extra hot taps you require and then can calculate the output and type of boiler needed to satisfy the extra demand.

Not enough hot water

Have you found that your boiler can’t provide you with all the hot water you need? Perhaps you have a combi boiler and have installed a second bathroom – or your circumstances have changed, for example your children all play rugby and your hot water demand has suddenly increased. You may need a more powerful boiler or change your combi for a system boiler and hot water storage cylinder. Your Gas Safe registered installer will be able to advise you on the best type and output of boiler for your needs.

How long does a boiler last?

Boilers should last up to 15 years if they are serviced and maintained properly.

How to replace a boiler

You need a qualified, Gas Safe registered installer to carry out a survey of your home and advise you of the type of boiler you need for all your heating and hot water requirements. They will look at your existing system to determine whether you need any replacement pipework or controls to meet the latest Building Regulations, and will also evaluate your home – number of rooms, windows, insulation etc – to calculate the output of boiler to suit your needs.

We recommend you get three quotes from installers to do the work. You may have recommendations from friends and family, or you can use our Find an Installer tool. Simply enter your postcode, and you’ll find Gas Safe registered heating engineers in your area.

Once you’ve accepted a quote for your boiler installation, your engineer will schedule the work. Straightforward installation of a combi boiler typically takes around a day. They should also carry out a power flush of the system to get rid of all the debris in the system before fitting the new boiler.

When the installation is complete, the installer will complete the Benchmark checklist, show you how the boiler works and how to operate the controls properly.

Find a Baxi boiler

Use our simple tool to find the right Baxi boiler for you.

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Find a Baxi installer

Find a Baxi installer near you for a free quote to install your new boiler.