Question 1

Should I turn off my boiler in the summer?

Accepted Answer

Generally, it is best to keep your boiler switched on even during the summer months, however this can depend on your home and your circumstances.

Question 2

Is a condensing boiler a combi boiler?

Accepted Answer

Is a condensing boiler the same as a combi boiler? The short answer is yes. However, there are 3 types of condensing boilers.

Question 3

Why is my external condensate pipe freezing?

Accepted Answer

Condensate pipes can freeze in extreme temperatures or as a result of improper insulation. A slow flow rate can also cause the wastewater to freeze before it can be drained away.

Question 4

Why should I get the water in my central heating system cleaned?

Accepted Answer

If your boiler breaks down due to sludge in the system, the repair work is not covered under your warranty and can lead to expensive repair bills as a result.

Question 5

How old is my boiler?

Accepted Answer

You can find out how old your boiler is by visiting the official industry database. Read more...

Question 6

Why should I have a filter fitted?

Accepted Answer

Many boiler breakdowns occur due to sludge in the heating system. A magnetic filter is an effective way of preventing this sludge from accumulating, and may prevent costly breakdowns at a later stage.

Question 7

How often should I have my boiler serviced?

Accepted Answer

We advise you have your boiler serviced every year in accordance with the manufacturer’s instructions and to keep your warranty valid.

Question 8

How long is the warranty on a Baxi boiler?

Accepted Answer

Baxi boiler warranties range from two-year parts and labour up to 10-year parts and labour, subject to being registered within 30 days of the boiler’s installation and an annual service being carried out.

Question 9

Why is my boiler pressure low?

Accepted Answer

A decrease in boiler pressure can be the result of air getting into the system, a leak, or debris. Adjusting the pressure is usually straightforward, but contact an engineer if you notice the pressure dropping frequently.

Question 10

How long does a boiler last?

Accepted Answer

Typically, a well-maintained boiler will last between 10 and 15 years, with a service carried out at least once a year.

Question 11

How energy efficient is my boiler?

Accepted Answer

Most modern boilers are designed to be highly efficient, due to changes in building regulations. You can use your boiler’s Energy related Products (ErP) directive certification to understand how efficient it is.

Question 12

Which Baxi boiler do I have?

Accepted Answer

You can identify what type of Baxi boiler you have by checking the instruction manual, serial number, or by calling Baxi Customer Support on  0330 678 0917.

Question 13

How does a system boiler work?

Accepted Answer

A system boiler has all the main components of the heating system within it, allowing a neat and quick installation. The boiler heats water stored in a cylinder or tank, delivering hot water when required and is particularly beneficial in properties that have a high demand for hot water.

Question 14

Where is safe to install a boiler?

Accepted Answer

You can have your boiler installed safely in most rooms. However, you do need to consider the Building Regulations.

Question 15

How does a heat only boiler work?

Accepted Answer

Heat only boilers heat the water stored in a cylinder or tank, delivering hot water throughout the property when it’s needed.

Question 16

Where can I find the serial number of my boiler?

Accepted Answer

Serial number can usually be found on the drop down panel on the front of the boiler. Some boilers have a tag underneath the boiler. Find out more...

Question 17

How does a combi boiler work?

Accepted Answer

A combi boiler brings central heating and hot water together in one unit. Water is heated instantly when a tap is turned on and the thermostat signals the boiler to turn on the heating when the temperature drops below a set temperature.

Question 18

What is a condensing boiler and how does it work?

Accepted Answer

A condensing boiler is a boiler that recaptures and reuses the heat from combustion gases that would normally be lost through the flue. There are three main types of condensing boiler: combi, system, and heat only boilers

Question 19

How do I know if I've got sludge in my central heating system?

Accepted Answer

Issues with your radiator temperature, leaks from your boiler, and unusual sounds from within your system are all indicators that there is a buildup of sludge.

Question 20

What should my boiler pressure be set at?

Accepted Answer

Normal operating water pressure for your boiler & central heating system is between 1.0 and 2.0 bar. Find out how to troubleshoot when the pressure drops.

Question 21

What is the Boiler Upgrade Scheme?

Accepted Answer

The Boiler Upgrade Scheme (BUS) provides eligible homeowners a grant of up to £7 500 to help with the cost of low-carbon heating systems such as air source heat pumps.

Question 22

Does my boiler filter need cleaning?

Accepted Answer

Your boiler filter should always be cleaned as part of your boiler’s annual service.

Question 23

What is central heating sludge?

Accepted Answer

Sludge or magnetite if left to build up, can damage the boiler and the heating system. Find out everything you need to know about Sludge here...

Question 24

Do I have to have a magnetic boiler filter installed?

Accepted Answer

Fitting a filter is considered best practice when installing a new boiler. The installer must carry out the following steps when a new boiler is fitted...

Question 25

What is Benchmark?

Accepted Answer

Find out everything you need to know about the Benchmark Scheme - how it works, benefits, and how it affects your boiler warranty.

Question 26

What is a magnetic boiler filter?

Accepted Answer

Find out everything you need to know about the magnetic boiler filter, how they function, why should the filter be fitted, and how to look after them.

Question 27

What is a back Boiler?

Accepted Answer

A Back Boiler is a small, compact Boiler fitted at the back of an open fireplace hearth. Find out everything you need to know about the Back Boiler.

Question 28

What happens at a boiler service?

Accepted Answer

During a boiler service, your Gas Safe registered installer will carry out various checks, such as checking the gas pressure, ensuring safety devices are in good condition, and pipework is in a suitable condition. It will usually take around half an hour to complete a boiler service.

Question 29

Can I run a bath and shower at the same time?

Accepted Answer

Depending on whether you have a hot water cylinder, you can normally run a bath and a shower at the same time. A system boiler and storage cylinder may be more suitable for properties that have a higher demand.

Question 30

What are the different types of boilers?

Accepted Answer

The main types of boiler are combi, system, heat only, and electric boilers. The one that you choose for your property will depend on your specific needs and aspects of your home.

Question 31

Why is my boiler leaking?

Accepted Answer

Checking for damp surfaces on or around your boiler, pipe corrosion, and water dripping beneath it can help identify if there is a leak.

Question 32

Are Baxi engineers Gas Safe registered?

Accepted Answer

Yes, our nationwide network of Baxi engineers are employed by Baxi and are Gas Safe registered. Find out more...

Question 33

What are the benefits of a boiler service?

Accepted Answer

Regular servicing can keep you and your family safe, save you money and keep your warranty valid. Find out more...

Question 34

What temperature should my boiler be set at?

Accepted Answer

Typically, your boiler should be set to at least 65 degrees Celsius to prevent bacteria growing in the water and maintaining comfort.

Question 35

What do Baxi error codes E23, E53, E133, E119 and E128 mean?

Accepted Answer

If your boiler shows error code E28, E53, E133, E119 or E128 then your condensate pipe may be frozen.

Question 36

What is sludge made from?

Accepted Answer

Sludge is a buildup of undissolved components in the water of your heating system. The main component, magnetite, is formed from iron rust when water and oxygen interact with steel pipes and radiators, but it also contains limescale – deposits that form from hard water.

Help & advice

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Baxi are here to help you boost your home’s efficiency and recommend tips to help you reduce your energy bills.

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Why summer is a perfect time to service your boiler

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Whether you’re exploring having an air source heat pump (ASHP) installed, or have one already, we have everything you need to find the answers to your questions.

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FAQs

We've shared the answers to some of the most frequently asked questions about boilers, heating systems, servicing and maintenance.

Should I turn off my boiler in the summer?

Is a condensing boiler a combi boiler?

Why is my external condensate pipe freezing?

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