Combi Boiler Installation UK & Gas Combi Boilers Fitted Next Day

Are you looking for a gas boiler and central heating system that provides you with hot water on demand and space-saving benefits? Then a new combi boiler installation might be the perfect solution for you.

In this article, we will provide you with a comprehensive guide to new combi boiler installation in the UK.

From understanding what a combi boiler is, to the different types available, and what factors you should consider before getting a combi boiler fitted, we’ve got you covered.

Looking for next day boiler installation? Why not compare combi boilers online and get a fixed price now.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote

What is a Combi Boiler Installation?

A combination boiler or combi boiler is a highly efficient water heating and central heating system that doesn’t require a separate water tank.

These gas combi boiler installations heat water directly from the mains, delivering hot water on demand to your taps and central heating system.

Many people are now getting a gas combi boiler installed and removing their old hot water cylinders as they can be much more energy efficient for small to medium sized homes.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote

Advantages of Installing a Combi Boiler

If you have a broken boiler and need a new gas boiler quickly then you need to ensure that you know all the facts and considerations.

Here at Compare Boiler Quotes, we want to ensure that you get the perfect new boiler for your home. There are many advantages to installing the best combi boiler for your home and central heating system, including:

Space Saving

Combi boiler installations are compact, so they take up less space in your home compared to other types of boilers.

They do not require any external tanks to work and most can fit inside a standard kitchen cupboard. If your current boiler uses a tank, then you do not have a combi.

Energy efficient

New combi boiler installations are highly energy-efficient, as they only heat the water that you need, reducing your energy bills. All combi boilers are condensing which means that they recirculate the gasses that aren’t used the first time round.

This makes them up to 94% efficient compared to non condensing gas boilers that run at 70% efficient.

Hot water on demand

With a combi boiler insatllation, you have hot water on demand, which means you don’t have to wait for a hot water tank to heat up before you can take a shower like you would with a gas system boiler.

Simply turn on your hot tap or flick on your central heating thermostat to start up your boiler and start the heating process.

Easy to install

Combi boiler installation is relatively easy for a competent Gas Safe registered heating engineer. If you already have a combi boiler then a simple swap can be done in less than a day which also means you can save money on installation costs.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote

Combi Boiler Replacement

In the UK the most common type of combi boiler replacement is a like for like swap. This basically means replacing your existing combi boiler with another one.

This is the quickest and cheapest option as it means that the fitters can literally take the old combi boiler off the wall and put the new combi boiler in the same place.

Most combi boiler replacements are completed in one day which not only saves you money but time and stress of not having hot water or heating for a short period of time.

Factors to Consider Before Installing a Combi Boiler

Before you go ahead and think you have decided that a combi is the perfect central heating boiler for your home Before installing a combi boiler, there are a few factors you should consider, including:

Your home’s water pressure

Because they run off the main’s water pressure, combi boilers require a certain water pressure to function properly, so it’s important to check your home’s water pressure before installing one. If you have low water pressure, then you may need to consider a different type of new boiler installation.

Your home’s heating requirements

The size of your home and your heating requirements will determine the size of combi boiler you need. If you have a smaller home then a new combi boiler with an output of around 25kW will be perfect for your heating and hot water needs.

If you have multiple bathrooms, however, you will likely need a more powerful combi boiler up to 35kw or more.

The brand of boiler

There are many combination boilers to choose from different boiler brands in the UK, so it can seem like a bit of a minefield when deciding. You can’t go wrong however with top brands such as Viessmann, Ideal and Worcester bosch combi boilers.

You can compare all these brands online now with Compare Boiler Quotes.

The cost of fitting

Whilst a combi boiler installation cost £2,200 on average for a replacement, combi boilers can be expensive to install if you are planning on converting to a combi boiler from another type, so it’s important to consider the cost before making a decision.

The best way to also keep combi boiler costs down is to compare quotes from replacement boiler companies online. Read more about boiler installation costs and prices here.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote

Choosing the Right Combi Boiler Installers

Choosing the right installer is crucial when it comes to combi boiler installations. Look for an installer who is Gas Safe registered, has experience installing combi boilers, and offers a warranty on their work.

A Gas Safe installation by a suitably qualified technician ensures that your new boiler is fitted properly, safely, and will last. It also means that it will be registered with the relevant authorities as per the requirements.

You can compare quotes online now for gas boiler installation online with Compare Boiler Quotes

How to Fit a Combi Boiler Step-by-Step Guide

If you’re looking to upgrade your heating system, fitting a combi boiler can be an excellent choice. Combi boilers are an efficient and space-saving option that can provide hot water and central heating without the need for a separate tank or cylinder.

However, combi boiler fitting can be a complex process, and it’s essential to make sure it’s done correctly. In this article, we’ll guide you through the installation process of fitting a combi boiler step-by-step, so you can have a warm and comfortable home all year round.

You can not fit a gas combi boiler unless you are Gas Safe registered.

Before you get our combi boiler fitted

Fitting a combi boiler requires knowledge of plumbing and electrical work, and it’s essential to make sure it’s done correctly to ensure safety and efficiency.

Before you start fitting a combi boiler, there are a few things you need to consider. Firstly, you’ll need to choose a suitable location for the boiler, which should be close to the gas supply and the hot water outlets.

You’ll also need to ensure that the wall where the boiler will be mounted is strong enough to support the weight of the unit. Finally, you’ll need to make sure that you have the necessary permissions and certifications before starting the work.

Tools and Materials

To fit a combi boiler, you’ll need a range of tools and materials, including a drill, a pipe cutter, a spanner, a screwdriver, and a spirit level.

You’ll also need copper pipes, fittings, and insulation, as well as a flue kit and a condensate pipe. Additionally, you’ll need a Gas Safe engineer to connect the gas supply to the boiler.

Removing the Old Boiler

Before you can fit the new combi boiler, you’ll need to remove the old boiler. This involves turning off the power and water supply to the old boiler, disconnecting the pipework and removing the unit from the wall. You may need to enlist the help of a professional plumber or heating engineer to do this safely.

Installing the Combi Boiler

Once the old boiler has been removed, you can start installing the new combi boiler. This involves mounting the boiler onto the wall, connecting the pipework and wiring, and fitting the flue. You’ll need to refer to the manufacturer’s instructions to ensure that the boiler is installed correctly.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote

Connecting the Pipework

Connecting the pipework is a crucial part of fitting a combi boiler. This involves installing the hot water and heating pipes, as well as the condensate pipe. You’ll need to use copper pipes and fittings, and you may need to insulate the pipes to prevent heat loss.

Filling and Testing the System

Once the pipework is connected, you’ll need to fill the system with water and test it for leaks. You’ll also need to bleed the radiators to remove any air from the system and ensure that they are getting hot evenly.

Commissioning the combi boiler

Commissioning a combi boiler involves a series of tests and checks to ensure that the boiler is safe, efficient, and operating correctly. This process is typically carried out by a Gas Safe registered engineer and involves the following steps:

• Checking gas pressure and combustion
• Checking for leaks
• Checking the flue
• Checking water pressure and temperature
• Checking controls and safety devices
• Providing documentation

Commissioning a combi boiler is an essential part of the installation process, and it ensures that the boiler is safe and efficient to use. It’s important to use a Gas Safe registered engineer to carry out this work, as they have the necessary skills and qualifications to do so safely.

Programming the controls

To enable you to get your central heating system up and make the most of its energy efficiency straight away it’s best for you to fit your combi boiler with a new thermostat.

They are relatively easy to set up and you can program them to tell your boiler to turn on and off at certain times of the day throughout the week.

Registering the installation

Every new boiler installation in the UK has to be registered. If your Gas Safe registered engineer has fit a new boiler, to comply with regulations they will need to notify the relevant local authority within 30 days of the combi boiler installation.

You should receive a notification in the post after registration.

Setting up a service plan

Boiler maintenance is as important as the new combi boiler installation process. All the best boiler brands in the UK stipulate in their terms and conditions that their gas boilers need to be serviced every year to maintain the warranty. If you had a service plan with your old gas boiler, then you can just keep paying this is because it doesn’t matter that the boiler has changed.

Types of Combi Boiler Installations

There are two main types of combi boilers: gas combi boilers and oil combi boilers. Gas combi boilers are the most popular type, and this energy efficient boiler is connected to the mains gas supply. Oil combi boilers, on the other hand, are more common in rural areas where there is no mains gas supply.

If you require a combi boiler installation then you must ensure that the engineer who carries out the work is Gas Safe registered engineer.

This is to ensure that the fitter is competent to work with gas and can complete the boiler installation safely and to the high standards required.

If you need an oil combi boiler installation then you would require an OFTEC registered heating engineer.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote

FAQs

How Does a Combi Boiler Work?

Most people have a gas comb boiler installed in their homes as they are the most popular type in the UK, so it is likely this is how your boiler works.

When you turn on the hot water tap, the combi boiler senses the flow and activates the heat exchanger, quickly heating the water to the desired temperature. The heated water then flows out of the tap, and the process repeats every time you turn on the hot water tap.

This is compared to other types such as a system boiler that requires a hot water tank to work or a regular boiler that requires both a hot water cylinder and a cold water tank to work.

What is the average cost of installing a combi boiler?

The average cost of installing or fitting a combi boiler is £2,200 for a mid range combi boiler. This means boilers around 30kW such as the Viessmann Vitodens 050-w and the Worcester Bosch 4000.

You can compare new combi boiler prices online now and get a fixed price for next day boiler installation.

How long does it take to install a combi boiler?

On average it takes around 6 hours to install a combi boiler properly. This is for a direct like for like swap and keeping the combi boiler in the same location. A system boiler to combi boiler installation can take up to 2 days, whereas a back boiler to combi conversion will take 2 to 3 days.

What size combi boiler do I need for my home?

The size combi boiler or output required for your home will depend on the amount of radiators, bathrooms and occupants in the property. Up to 10 radiators and 1 bathroom will require a 25kW combi, whereas a home with 20 radiators and 2 bathrooms will likely need a 35kW.

Can I install a combi boiler myself?

You can only install a combi boiler if you are suitably qualified. Combi boiler installation can be dangerous as it involves, water, electricity and of course gas. Ensuring that none of these mixes during or after the installation process is so important for the safety of the installer and homeowners.

How often should I service my combi boiler?

A combi boiler should be serviced annually. An annual boiler service ensures that it is running efficiently and will pick up any problems before they cause your boiler to stop working in the depths of winter when you need it the most. Only Gas Safe registered engineers should complete a gas combi boiler service.

Fixed Price Boiler Quotes Online

Get the best boiler deals, fitted next day if ordered before 2pm weekdays!

Get a Quote