Notice

Our highest priority is the safety of all our valued customers and colleagues, especially as we face the battle against COVID-19. Please read our coronavirus update here




Frequently asked questions


We've shared the answers to some of the most frequently asked questions about boilers, heating systems, servicing and maintenance. Can't find the answer? Contact us and we'll do our best to help.




Categories

  • All FAQs
  • Coronavirus Advice
  • Winter Advice
  • Flood Advice
  • Trouble Shooting
  • Boiler Servicing
  • Gas Safety
  • General Boiler Info
  • Parts Advice
  • Energy Efficiency
  • Benchmark

All FAQs

I already have a booking for an engineer to repair my boiler. Will it still be taking place?

Coronavirus Advice

Most repair work is being completed as normal. If there are any changes or we’re forced to cancel, we’ll contact you via text or phone.

How to look after your boiler in the summer

General Boiler Info

Just like you would check your car’s oil, brake pads and spark plugs to make sure it’s running safely and efficiently, it’s the perfect time to get your boiler checked over too. Read our top tips for your boiler’s summer maintenance here. 

What is Flue Gas Heat Recovery?

General Boiler Info

A FGHR device that uses recycled heat when heating up the incoming cold water, lowering the amount of energy needed to warm the water up. Read more to find out how FGHR works and the benefits. 

How long does a boiler last?

General Boiler Info

We understand that buying a new boiler is a big investment, and you need to be sure of getting it right. Your boiler is also the heart of your home so it’s vital you make the right choice when the time comes to replace it. Read our advice on how long a boiler lasts, how to maintain it and when to consider getting a new one.

How much does a new boiler cost?

General Boiler Info

How much a new boiler costs will depends on a number of things, including the model, output and installation of the boiler. Read our advice here.

Where can I find the serial number of my boiler?

Boiler servicing

The 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 that slides out to reveal the serial number. If you can’t find your serial number, call Baxi Customer Support 0330 678 0917 with the name of your boiler and they will help you find it.

How does a heat only boiler work?

General boiler info

Heat only boilers are also known as conventional, traditional, open vent or regular boilers.

How does a combi boiler work?

General boiler info

Combi, or combination boilers are the most popular type of domestic boiler sold in the UK.

What do Baxi error codes E133 or E28 mean?

Trouble shooting

If your boiler has shut down and is showing error code E133 or E28, then your condensate pipe may be frozen.

Why is my boiler pressure low?

Trouble Shooting

The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, here we explain how to adjust it and what to do if your boiler keeps losing pressure. 

What is Benchmark?

Benchmark

Benchmark is a nationally recognised scheme that gives manufacturers and installers the responsibility for ensuring best practice for the installation, commissioning and servicing of domestic heating and hot water products, in accordance with the Building Regulations in England and Wales. 

Energy saving tips Q&A

Coronavirus Advice, Energy Efficiency

While we are confined to our homes, do you have any energy saving tips that could help us reduce our fuel bills?

Do I need a carbon monoxide detector for a gas boiler?

Gas Safety

Your carbon monoxide detector could save your and your family’s lives, so it is vital you install them in the best place to protect you from this poisonous gas. Here we answer some frequently asked questions about carbon monoxide (CO); what is carbon monoxide, what are the signs of carbon monoxide poisoning, where to place a carbon monoxide detector and more to keep you and your family safe.

What do Baxi error codes mean?

Trouble shooting

If your boiler develops a problem, it will often display an error code on the control panel that will help you or your Gas Safe registered installer identify what went wrong.

How do I maintain a boiler flue in the ceiling?

General boiler info

If you live in a property that has a boiler flue which cannot be inspected because it is hidden behind a wall or ceiling, you need to install an inspection hatch.

Water treatment explained: How to keep your heating system healthy

Boiler servicing

Buying a new boiler is a big investment, and not taken lightly, whether it’s a distress purchase because your old boiler has broken down and can’t be repaired, you have extended your home and need a bigger boiler to cope with more radiators or you are concerned about your carbon footprint and want to be more energy efficient.

How to stay safe during the floods

Flood advice

With serious flooding in some areas of the UK, boilers and central heating systems may not be your first consideration, yet when the floods subside there are some important things to consider to help keep you and your family safe.

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

General boiler info

If you have a hot water storage cylinder, usually found in the airing cupboard, you should be able to run a bath and have a shower at the same time.

The Baxi uSense smart room thermostat

Smart room thermostat

Baxi uSense is compatible with all combi boilers using the 230V switch live. Additional features, such as boiler fault diagnosis, are enabled when connected via OpenTherm.

The following Baxi boilers are OpenTherm compatible:

Baxi 800

Baxi 600

Baxi 400

Baxi 200

My appointment has been cancelled. When can I rebook it?

Coronavirus Advice

We are keeping a log of all the appointments we have had to cancel. Of course, we are hoping to return to business as usual as soon as possible. We will contact you via text, phone, email or letter to rearrange.

What extra precautions are your engineers taking when they come into my home?

Coronavirus Advice

Our highest priority is the safety of our customers and colleagues during this time. We are taking extra precautions and acting on government advice to keep you and our engineers safe when carrying out work in your property.

Which Baxi boiler do I have?

General boiler info

The easiest way to find out which Baxi boiler you have is by looking at the instructions that came with it. It is always worth keeping these in a safe place, because they also include the Benchmark Checklist that your installer should have carried out when they fitted the boiler and also the boiler’s service history, which should be completed by the engineer when they carry out your annual service.

However, if you no longer have the instruction booklet you can find the serial number here.

What is a gas safety certificate?

Gas Safety

Under The Gas Safety (Installation and Use) Regulations 1998, owners of residential rented properties must arrange a gas safety check by a Gas Safe registered engineer for all pipework, appliances and flues in each of the properties which the landlord owns and provides for tenants to use.

Top tips for maintaining your boiler

Boiler Servicing

There are a few simple maintenance jobs you can do yourself to keep it in tip top condition.

How to book a boiler service online

Boiler Servicing

 Follow our 3 simple steps to book your boiler service online today. 

What are the different types of boilers?

General boiler info

We explain about the different types of boiler and their pros and cons, so you can make an informed decision on which type of boiler you need when you come to replace yours.

Are Baxi customer support engineers Gas Safe registered?

Gas Safety

Yes, our nationwide network of Baxi Customer Support engineers are employed by Baxi and are Gas Safe registered.

Baxi Genuine Parts

Parts Advice

It might be difficult to tell the difference between a counterfeit part being installed into your boiler and a genuine part, but this could make a real difference to the running of your home heating system.

We recommend always asking your installer to use Baxi Genuine Parts, because they have been tested and approved for use in Baxi boilers.

How to protect your boiler this winter

Winter advice

Here are some steps you can take to protect your boiler and keep yourself, and your dear ones, warm and cosy, even during the coldest weather.

How does a system boiler work?

General boiler info

A system boiler, or sealed system, is a great option if you have more than one bathroom or your household has a high demand for hot water.

What is a back boiler?

General boiler info

Back boilers (also known as back boiler units or BBUs) became popular in 1966 with the launch of the original Baxi Bermuda. A back boiler is a small, compact boiler fitted at the back of an open fireplace hearth. It sits behind a gas fire and provides hot water and central heating to the property.

Click to find out everything you need to know about replacing a back boiler.

What are the benefits of a boiler service

Boiler Servicing

Regular servicing can keep you and your family safe, save you money and keep your warranty valid. Click to read more on the benefits of a boiler service.

How energy efficient is my boiler?

Energy Efficiency

As one of the biggest costs for householders in the UK, it is worth understanding how energy efficient your boiler is, and how much you could save if you replaced it with a new high efficiency model.

In April 2018, the Building Regulations changed again, requiring all new boilers to be at least ErP 92% efficient.

What happens at a boiler service

Boiler Servicing

An annual service will include a thorough safety check, inspection and testing of key components, to ensure your boiler is working safely, efficiently and reliably.

What happens at a boiler service?

Boiler servicing

Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.

How often should I have my boiler serviced?

Boiler servicing

Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.

How old is my boiler?

General boiler info

To find out how old your boiler is, visit the official industry database Fill in details of your boiler and the dates when manufacture of that model began and ended will be displayed. You can search for all brands and models of boilers in this database. Or you can look at your boiler’s serial number. This can usually be found on the drop down panel on the front. The serial number has all the information needed for us to tell you when your boiler was manufactured. Contact us with the details.

What should the pressure gauge on my boiler be reading?

Trouble Shooting

The normal operating water pressure for your boiler and central heating system is between 1.0 and 2.0 bar. If the pressure drops below 1.0 bar, you need to repressurise it. If the pressure goes above 3.0 bar, you will see water coming from the pressure relief valve (usually on an outside wall). You can reduce the pressure by bleeding a radiator or draining some water out of the system using a drain point, usually found underneath a radiator.

How to bleed your radiators

Trouble Shooting

If you have cold spots at the top of your radiators, it means that there is trapped air that needs to be removed so your radiators will heat your room efficiently.

Follow our 8 simple steps on how to bleed a radiator.

How do I maintain the pilot light?

Trouble Shooting

If you have an older boiler (SEDBUK Band G), you should regularly check its pilot light, a small naked flame inside the boiler that you can see through a small hole covered by glass.

How to thaw a frozen boiler condensate pipe

Winter Advice

If your boiler has stopped working in below zero temperatures, then it is likely your condensate pipe has frozen. Luckily it is quite simple to thaw and get your boiler up and running again without the need for an engineer. Follow our simple steps to get your boiler working again.

How do I top up the water pressure?

Trouble Shooting

Sometimes boilers need to be repressurised. This is quite normal and you can repressurise your boiler yourself. Our videos show you how, whether you have a rigid or a flexible filling loop, or Easy-Fill permanent filling link.

My boiler is still under warranty and the service visit has been cancelled

Coronavirus Advice

Yes. If your boiler is under warranty, we will offer flexibility around servicing timescales under the current circumstances, so that if your boiler's service is delayed, either by Baxi or your local gas safe installer, your warranty remains valid.

What’s wrong with my boiler? Try our basic boiler checks

Trouble Shooting

This five part basic checks video series can help you identify and repair basic boiler faults, problems, issues and error codes, helping you save time and money.

Click through to view our videos.

My boiler keeps losing pressure. What should I do?

Trouble Shooting

The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, we explain how to adjust it and what to do if your boiler keeps losing pressure.

What does Boiler Plus mean to you?

General Boiler Info

The part of the Building Regulations that deals with central heating boilers is undergoing the biggest change since the introduction of condensing boilers in 2005. The change, commonly known as Boiler Plus, affects you when your old boiler is replaced, or you have a new boiler installed where there wasn’t one before.

The new law becomes effective on 6 April 2018 and applies to homes in England only.

What is a condensing boiler?

General boiler info

The difference between an old non-condensing boiler and a new condensing model is the amount of useable heat it produces from the fuel it burns.

How to reset a Baxi boiler

Trouble shooting

If your boiler needs to be reset, these videos show you how, whether your boiler has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.

Carbon monoxide (CO) advice

Gas Safety

Carbon monoxide (CO) is a toxic gas produced by the incomplete combustion of fossil fuels including gas, oil, wood and coal used in boilers, engines, oil burners, gas fires, water heaters, gas ovens, solid fuel appliances and open fires.

It can occur when a gas appliance has been incorrectly fitted, badly repaired or poorly maintained. It can also occur if flues, chimneys or vents are blocked.

It is colourless, odourless and tasteless, so the best way to detect carbon monoxide is to fit a CO alarm.

Where is safe to install a boiler?

General boiler info

You can have your boiler installed safely in most rooms, or even the loft. There are, however a few things to consider.

Are carbon monoxide detectors (CO alarms) required by law?

Gas safety

Currently, carbon monoxide detectors (CO alarms) for gas appliances are not required by law, in either privately owned, private rented or social housing.

Boiler pressure too high? We explain how to fix it

Trouble Shooting

If your boiler pressure is too high, it could be because a radiator has been removed, for example, while decorating a room, and the system was over-filled when it was replaced. If the water pressure continues to be high after bleeding the radiators, please call your heating engineer, or Baxi Customer Support on 0330 678 0917 to check the system is safe to use.

Coronavirus Advice

I already have a booking for an engineer to repair my boiler. Will it still be taking place?

Coronavirus Advice

Most repair work is being completed as normal. If there are any changes or we’re forced to cancel, we’ll contact you via text or phone.

My appointment has been cancelled. When can I rebook it?

Coronavirus Advice

We are keeping a log of all the appointments we have had to cancel. Of course, we are hoping to return to business as usual as soon as possible. We will contact you via text, phone, email or letter to rearrange.

What extra precautions are your engineers taking when they come into my home?

Coronavirus Advice

Our highest priority is the safety of our customers and colleagues during this time. We are taking extra precautions and acting on government advice to keep you and our engineers safe when carrying out work in your property.

My boiler is still under warranty and the service visit has been cancelled

Coronavirus Advice

Yes. If your boiler is under warranty, we will offer flexibility around servicing timescales under the current circumstances, so that if your boiler's service is delayed, either by Baxi or your local gas safe installer, your warranty remains valid.

Energy saving tips Q&A

Coronavirus Advice, Energy Efficiency

While we are confined to our homes, do you have any energy saving tips that could help us reduce our fuel bills?

Winter Advice

How to protect your boiler this winter

Winter advice

Here are some steps you can take to protect your boiler and keep yourself, and your dear ones, warm and cosy, even during the coldest weather.

How to thaw a frozen boiler condensate pipe

Winter Advice

If your boiler has stopped working in below zero temperatures, then it is likely your condensate pipe has frozen. Luckily it is quite simple to thaw and get your boiler up and running again without the need for an engineer. Follow our simple steps to get your boiler working again.

Flood Advice

How to stay safe during the floods

Flood advice

With serious flooding in some areas of the UK, boilers and central heating systems may not be your first consideration, yet when the floods subside there are some important things to consider to help keep you and your family safe.

Trouble Shooting

What do Baxi error codes E133 or E28 mean?

Trouble shooting

If your boiler has shut down and is showing error code E133 or E28, then your condensate pipe may be frozen.

What do Baxi error codes mean?

Trouble shooting

If your boiler develops a problem, it will often display an error code on the control panel that will help you or your Gas Safe registered installer identify what went wrong.

What should the pressure gauge on my boiler be reading?

Trouble Shooting

The normal operating water pressure for your boiler and central heating system is between 1.0 and 2.0 bar. If the pressure drops below 1.0 bar, you need to repressurise it. If the pressure goes above 3.0 bar, you will see water coming from the pressure relief valve (usually on an outside wall). You can reduce the pressure by bleeding a radiator or draining some water out of the system using a drain point, usually found underneath a radiator.

How to bleed your radiators

Trouble Shooting

If you have cold spots at the top of your radiators, it means that there is trapped air that needs to be removed so your radiators will heat your room efficiently.

Follow our 8 simple steps on how to bleed a radiator.

How do I maintain the pilot light?

Trouble Shooting

If you have an older boiler (SEDBUK Band G), you should regularly check its pilot light, a small naked flame inside the boiler that you can see through a small hole covered by glass.

How do I top up the water pressure?

Trouble Shooting

Sometimes boilers need to be repressurised. This is quite normal and you can repressurise your boiler yourself. Our videos show you how, whether you have a rigid or a flexible filling loop, or Easy-Fill permanent filling link.

What’s wrong with my boiler? Try our basic boiler checks

Trouble Shooting

This five part basic checks video series can help you identify and repair basic boiler faults, problems, issues and error codes, helping you save time and money.

Click through to view our videos.

My boiler keeps losing pressure. What should I do?

Trouble Shooting

The pressure on your boiler can go up or down for different reasons. Whether you have high or low boiler pressure, we explain how to adjust it and what to do if your boiler keeps losing pressure.

How to reset a Baxi boiler

Trouble shooting

If your boiler needs to be reset, these videos show you how, whether your boiler has a dedicated reset button, an ON/OFF/SELECTOR switch or a thermostat control knob.

Boiler Servicing

Where can I find the serial number of my boiler?

Boiler servicing

The 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 that slides out to reveal the serial number. If you can’t find your serial number, call Baxi Customer Support 0330 678 0917 with the name of your boiler and they will help you find it.

Water treatment explained: How to keep your heating system healthy

Boiler servicing

Buying a new boiler is a big investment, and not taken lightly, whether it’s a distress purchase because your old boiler has broken down and can’t be repaired, you have extended your home and need a bigger boiler to cope with more radiators or you are concerned about your carbon footprint and want to be more energy efficient.

Top tips for maintaining your boiler

Boiler Servicing

There are a few simple maintenance jobs you can do yourself to keep it in tip top condition.

How to book a boiler service online

Boiler Servicing

 Follow our 3 simple steps to book your boiler service online today. 

What are the benefits of a boiler service

Boiler Servicing

Regular servicing can keep you and your family safe, save you money and keep your warranty valid. Click to read more on the benefits of a boiler service.

What happens at a boiler service

Boiler Servicing

An annual service will include a thorough safety check, inspection and testing of key components, to ensure your boiler is working safely, efficiently and reliably.

What happens at a boiler service?

Boiler servicing

Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.

How often should I have my boiler serviced?

Boiler servicing

Getting your boiler serviced every year is a bit like getting your car serviced. The law requires that all servicing and gas safety checks are made by a Gas Safe registered engineer and an annual service can make all the difference in reliability, efficiency and household bills. If your boiler is still under warranty, having an annual service is a condition of the warranty. Always ask to see the engineer’s Gas Safe ID.

Gas Safety

Do I need a carbon monoxide detector for a gas boiler?

Gas Safety

Your carbon monoxide detector could save your and your family’s lives, so it is vital you install them in the best place to protect you from this poisonous gas. Here we answer some frequently asked questions about carbon monoxide (CO); what is carbon monoxide, what are the signs of carbon monoxide poisoning, where to place a carbon monoxide detector and more to keep you and your family safe.

What is a gas safety certificate?

Gas Safety

Under The Gas Safety (Installation and Use) Regulations 1998, owners of residential rented properties must arrange a gas safety check by a Gas Safe registered engineer for all pipework, appliances and flues in each of the properties which the landlord owns and provides for tenants to use.

Are Baxi customer support engineers Gas Safe registered?

Gas Safety

Yes, our nationwide network of Baxi Customer Support engineers are employed by Baxi and are Gas Safe registered.

Carbon monoxide (CO) advice

Gas Safety

Carbon monoxide (CO) is a toxic gas produced by the incomplete combustion of fossil fuels including gas, oil, wood and coal used in boilers, engines, oil burners, gas fires, water heaters, gas ovens, solid fuel appliances and open fires.

It can occur when a gas appliance has been incorrectly fitted, badly repaired or poorly maintained. It can also occur if flues, chimneys or vents are blocked.

It is colourless, odourless and tasteless, so the best way to detect carbon monoxide is to fit a CO alarm.

Are carbon monoxide detectors (CO alarms) required by law?

Gas safety

Currently, carbon monoxide detectors (CO alarms) for gas appliances are not required by law, in either privately owned, private rented or social housing.

General Boiler Info

How does a combi boiler work?

General boiler info

Combi, or combination boilers are the most popular type of domestic boiler sold in the UK.

How do I maintain a boiler flue in the ceiling?

General boiler info

If you live in a property that has a boiler flue which cannot be inspected because it is hidden behind a wall or ceiling, you need to install an inspection hatch.

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

General boiler info

If you have a hot water storage cylinder, usually found in the airing cupboard, you should be able to run a bath and have a shower at the same time.

Which Baxi boiler do I have?

General boiler info

The easiest way to find out which Baxi boiler you have is by looking at the instructions that came with it. It is always worth keeping these in a safe place, because they also include the Benchmark Checklist that your installer should have carried out when they fitted the boiler and also the boiler’s service history, which should be completed by the engineer when they carry out your annual service.

However, if you no longer have the instruction booklet you can find the serial number here.

What are the different types of boilers?

General boiler info

We explain about the different types of boiler and their pros and cons, so you can make an informed decision on which type of boiler you need when you come to replace yours.

How does a system boiler work?

General boiler info

A system boiler, or sealed system, is a great option if you have more than one bathroom or your household has a high demand for hot water.

What is a back boiler?

General boiler info

Back boilers (also known as back boiler units or BBUs) became popular in 1966 with the launch of the original Baxi Bermuda. A back boiler is a small, compact boiler fitted at the back of an open fireplace hearth. It sits behind a gas fire and provides hot water and central heating to the property.

Click to find out everything you need to know about replacing a back boiler.

How old is my boiler?

General boiler info

To find out how old your boiler is, visit the official industry database Fill in details of your boiler and the dates when manufacture of that model began and ended will be displayed. You can search for all brands and models of boilers in this database. Or you can look at your boiler’s serial number. This can usually be found on the drop down panel on the front. The serial number has all the information needed for us to tell you when your boiler was manufactured. Contact us with the details.

What does Boiler Plus mean to you?

General Boiler Info

The part of the Building Regulations that deals with central heating boilers is undergoing the biggest change since the introduction of condensing boilers in 2005. The change, commonly known as Boiler Plus, affects you when your old boiler is replaced, or you have a new boiler installed where there wasn’t one before.

The new law becomes effective on 6 April 2018 and applies to homes in England only.

What is a condensing boiler?

General boiler info

The difference between an old non-condensing boiler and a new condensing model is the amount of useable heat it produces from the fuel it burns.

Where is safe to install a boiler?

General boiler info

You can have your boiler installed safely in most rooms, or even the loft. There are, however a few things to consider.

How to look after your boiler in the summer

General Boiler Info

Just like you would check your car’s oil, brake pads and spark plugs to make sure it’s running safely and efficiently, it’s the perfect time to get your boiler checked over too. Read our top tips for your boiler’s summer maintenance here. 

What is Flue Gas Heat Recovery?

General Boiler Info

A FGHR device that uses recycled heat when heating up the incoming cold water, lowering the amount of energy needed to warm the water up. Read more to find out how FGHR works and the benefits. 

How long does a boiler last?

General Boiler Info

We understand that buying a new boiler is a big investment, and you need to be sure of getting it right. Your boiler is also the heart of your home so it’s vital you make the right choice when the time comes to replace it. Read our advice on how long a boiler lasts, how to maintain it and when to consider getting a new one.

How much does a new boiler cost?

General Boiler Info

How much a new boiler costs will depends on a number of things, including the model, output and installation of the boiler. Read our advice here.

How does a heat only boiler work?

General boiler info

Heat only boilers are also known as conventional, traditional, open vent or regular boilers.

Parts Advice

Baxi Genuine Parts

Parts Advice

It might be difficult to tell the difference between a counterfeit part being installed into your boiler and a genuine part, but this could make a real difference to the running of your home heating system.

We recommend always asking your installer to use Baxi Genuine Parts, because they have been tested and approved for use in Baxi boilers.

ERP

How energy efficient is my boiler?

Energy Efficiency

As one of the biggest costs for householders in the UK, it is worth understanding how energy efficient your boiler is, and how much you could save if you replaced it with a new high efficiency model.

In April 2018, the Building Regulations changed again, requiring all new boilers to be at least ErP 92% efficient.

Energy saving tips Q&A

Coronavirus Advice, Energy Efficiency

While we are confined to our homes, do you have any energy saving tips that could help us reduce our fuel bills?

Benchmark

What is Benchmark?

Benchmark

Benchmark is a nationally recognised scheme that gives manufacturers and installers the responsibility for ensuring best practice for the installation, commissioning and servicing of domestic heating and hot water products, in accordance with the Building Regulations in England and Wales. 

Find a Baxi boiler

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

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