Your Complete Guide to System Boiler Installation 2024
Your Complete Guide to System Boiler Installation
System boilers are a type of boiler that offers a good balance between efficiency and performance for average to large-sized homes. If you&#;re looking to install a new boiler, you should consider installing a system boiler as they can be less complex and expensive to install because they don&#;t need a water storage tank as they pull their water from the mains water supply. In this article, we'll talk you through everything you need to know about system boiler installation.
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However, if you don't want to waste any more time and are simply just looking for a qualified heating engineer, then let GreenMatch help you. Researching and contacting qualified system boiler installers one by one can be tedious and take up hours of your free time. Since GreenMatch has a large network of vetted installers, this means we can quickly connect you with up to 3 reliable heating engineers near you.
You'll receive a quote from each heating engineer so that you can easily compare their rates and choose the best deal. What's more, our service is free and you're under no obligation to accept any of the quotes you receive. Click the button below to get your free quotes now and have your new system boiler installed in no time.
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Why Choose A System Boiler?
3 Reasons to choose to install a system boiler:
- If your current boiler doesn&#;t supply enough hot water to your home
- If replacing an old, inefficient boiler
- If changing to a more sustainable fuel
There are many reasons to choose to have a system boiler installed in your home. One of the main reasons is if you need a larger hot water supply. System boilers are able to meet the hot water demand for homes with two or more bathrooms that are regularly used. This is because they use a hot water cylinder and can provide hot water with high pressure to taps simultaneously.
Additionally, you may want to replace your current old boiler with a system boiler that has higher energy efficiency. Modern condensing system boilers are required to have a minimum energy efficiency of 92%, so depending on how old your current boiler is, you could be saving as much as £630 annually by replacing your old system boiler.
Typically, system boilers use gas or oil as fuel, but they are also compatible with non-gas fuel options&#; such as hydrogen-gas blend or electric. Therefore, the installation of a system boiler may give you the opportunity to switch to a fuel option that better fits your needs and reduces your carbon footprint.
System Boiler Installation Costs
A new system boiler installation will cost on average, between £1,500 and £3,000. The final system boiler installation cost will depend on a multitude of factors that make the installation either more or less complex. The largest contributor factor will be what boiler you&#;re replacing.
Cost to Replace a Boiler with a System Boiler ()Boiler SwapPrice RangeCombi to System Boiler£1,850 &#; £4,100Regular to System Boiler£1,550 &#; £3,450The boiler you&#;re replacing may also change what additional labour and parts you need to consider&#; such as reconfiguring pipework, installing a hot water cylinder, removal of a cold water feed or old boiler, and labour costs. A like-for-like boiler swap in the same location is the most straightforward and will generally cost you the lowest system boiler installation cost.
Therefore, depending on the complexity of your system boiler installation, you can expect the breakdown of the installation costs to be the following:
Breakdown of Expected Installation CostInstallation LabourPrice RangeNew/Reconfiguring Pipework£250-£600New Unvented Hot Water Cylinder£900-£1,300Relocating Your Boiler£800-£2,800New Boiler Flue£50-£150System Flush£300-£500Magnetic Filter£100-£150Heating Controls£70-£650Your installation costs may not require all the components listed depending on your current boiler system. Price range may also vary depending on where you live.
There are many costs to consider before installing a system boiler, and many of these costs can start adding up to a hefty price. That&#;s why we recommend comparing quotes from multiple installers so that you can eliminate the risk of overpaying.
However, calling multiple installers, ensuring they&#;re certified, explaining your heating situation, and asking for quotes can be time-consuming and takes a lot of effort. Luckily for homeowners like you, GreenMatch works with vetted and certified boiler installers across the entire UK who can all provide reliable quotes for you.
To start getting up to 3 free and trustworthy quotes from installers near you, just click the button below and fill in our simple form. Once you have the quotes, you&#;re under no obligation to accept them.
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- Quotes from local engineers
- Payment by finance available
- Save up to £975
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What's Involved In A System Boiler Installation?
Generally, you can expect your installation to take between 1 to 3 days depending on the installation complexity.
Your system boiler installation may be as simple as replacing your current system boiler with a new system boiler, or it might be as complex as needing to redo your entire pipework and adding a new hot water cylinder. It primarily depends on what boiler system you currently have.
A system boiler installation is easier than a regular boiler installation&#; because it doesn&#;t require a water storage tank&#; but more complex than a combi boiler installation&#; because it still requires a hot water cylinder.
Here&#;s an overview of what you can expect during a simple like-for-like system boiler installation.
1. Before the installation
You and your Gas Safe registered boiler installer will confirm the output size needed to heat and supply your home, the location of the boiler installation, and any additional considerations specific to your home. The boiler installer will give you a quote estimating the installation cost.
2. Removal of old system boiler
If the new system boiler is installed in the same location as the current boiler, the old system boiler will need to be removed by your installer. Otherwise, it may be possible to decommission your old boiler without needing to pay to remove it. In either case, ensure the old boiler is accessible by the installer.
3. System flush
System flushes help to clear debris and sludge build-up in your heating system. Letting debris build up for long periods of time can negatively affect your boiler&#;s efficiency and the cleanliness of the water flowing in the system. A chemical flush should be sufficient, but in some cases, a stronger power flush may be needed.
4. Installation of new system boiler
A new system boiler requires both the installation of the system boiler itself, a hot water cylinder, pipework, and any additional features you want&#; such as heating controls. While system boilers can usually fit in a standard kitchen cupboard, the hot water cylinder needs to be connected to the mains water supply and usually sits somewhere on your ground floor.
5. Finalisation and handover of boiler
After your new system boiler has been installed, the boiler installer will test all the components and then hand the boiler over to you by showing you how to use it most efficiently.
6. After the installation
Once the system boiler is installed in your home, you should register the boiler with the manufacturer to validate any warranty. To continue to qualify for this warranty, you also need to have annual boiler services that ensure your system boiler is operating at top efficiency.
System Boiler Replacement
Replacing a system boiler with another system boiler is a like-for-like replacement and is the easiest system boiler installation. This is because your existing system has the required pipework and hot water cylinders, therefore no additional components need to be installed or removed, besides the boiler itself.
Replacing A Combi With A System Boiler
A combi boiler is able to supply hot water on-demand without the use of a hot water cylinder, but if you have a higher hot water demand than combi boilers are able to supply, then installing a system boiler may be a good solution. Replacing a combi boiler with a system boiler requires you to install a hot water cylinder and pipework, and hence requires more space (at least the size of a cupboard).
Replacing A Regular With A System Boiler
Regular boilers are one of the oldest boiler types still around, so if you&#;re looking to replace it with a system boiler, it will require the removal of the cold water feed tank from the loft and additional pipework. Even though this swap may be more expensive, a modern system boiler can maintain high water pressure and free up space, while still meeting the heating and hot water demands of a large household.
Which System Boiler Do I Need?
The best system boiler for you is the one that can meet your heating and water demands. With that being said, a system boiler is typically seen as the best boiler for 5 bedroom houses or 4-bedroom houses as long as they are installed alongside a sufficiently sized hot water cylinder.
Before deciding on which system boiler is best for your home, you should ask yourself the following questions:
Finding The Right System Boiler Installer
The right system boiler installer will be able to help you decide which system boiler is best for your home and install it. A system boiler installer will give you a quote specific to your home, as not all homes are the same and require different heating needs. Therefore, it is important you compare multiple system boiler installers so you can ensure you&#;re not being overcharged.
We recommend consulting up to 3 boiler installers and then choosing the best offer. Calling multiple installers to describe your boiler heating situation can be a highly time-consuming and tedious process for most individuals, using up hours of your valuable time.
Luckily for you, we can help you complete this process much faster because of GreenMatch's vast network of reliable installers. In comparison to doing it yourself, it will take you far less time to get up to 3 trustworthy, tailormade quotes from installers near you. You can request quotes in minutes!
Click the button below and answer some quick questions about your boiler to start getting up to 3 free quotes.
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Quickly compare 3 FREE quotes
- Quotes from local engineers
- Payment by finance available
- Save up to £975
GET QUOTES NOW
Optimise your home and save the planet
Call us to get quotes
We will get you the best deal
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Frequently Asked Questions
Modern condensing system boilers are required to have an energy efficiency of at least 92%. This makes system boilers very energy efficient, however, determining which system boiler is the best for you depends on several factors such as what output size you need and how much space you have.
The main difference between a regular boiler and a system boiler is that a system boiler pulls water from the mains water supply, while a regular boiler draws water from a cold water tank that sits in the loft. This can mean the installation of a regular boiler may be more complex and expensive than installing a system boiler.
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No, while it is not possible to convert your regular boiler to a system boiler, you can replace your regular boiler with a system boiler. Modern system boilers require less space and can have a higher energy efficiency than regular boilers.
While a heat-only boiler, also called a regular or conventional boiler, is one of the oldest boiler types, they are strongly able to compete with system boilers. This is mainly because they cater to different house types and heating needs. But having a large house with more than two bathrooms that are regularly used simultaneously is just one of the many reasons to choose a system boiler.
The average system boiler installation will cost you between £1,500 and £3,000. The final cost of your installation will depend on many factors specific to your house, such as how the pipework is currently positioned and what boiler types you&#;re swapping.
Boiler Mountings: A Comprehensive List
The boiler is one of the oldest machinery systems to be used in a ship&#;s engine room. In early days, the vessel&#;s propulsion system was powered by the steam produced by the boiler. With technical advancements and increasing emphasis on safety of ship and crew, various boiler mountings and boiler safety devices have been introduced.
Just installing a boiler on a ship doesn&#;t guarantee efficient working of a boiler. When a boiler installation is done on board a ship, it can only be considered as complete, when different types of boiler mountings, including boiler controls, are fitted to ensure safe and efficient operation of a gas boiler.
Related Reading: Choosing a marine boiler while designing a ship
The article describes a comprehensive list of boiler mountings, without which, a boiler cannot operate safely and efficiently on a ship.
1) Main steam Stop Valve:
The steam generated in the boiler is supplied to ship&#;s system through this valve. It usually is non-return type of valve directly mounted on the steam space of the boiler shell. The body is made of cast iron, and the valve seat is of gunmetal.
Related Reading: How to identify metals in engine room &#; Observation and Spark Test
2) Auxiliary steam Stop Valve:
In most of the steam system on ships, a separate steam line provided from the boiler for the small auxiliary system is supplied through this valve. The valve is smaller in size and usually of a non-return type.
3) Boiler Safety valve:
This is one of the most critical boiler fitting used in the event of unsafe excessive pressure inside the boiler. The boiler safety valve is designed to come into action to release the overpressure. The lifting pressure of the valve is set prior to its installation and locked in the presence of a surveyor so that it cannot be changed later on.
Related Reading: 10 Boiler Operating Mistakes That Can Cost Big Time
Boiler safety valves are installed in pairs with one valve set at a little higher pressure to ensure boiler does not explode of overpressure in the event of failure of any one boiler safety valve.
4) Boiler level gauge glass: Boiler gauge glasses are fitted in pairs for manually checking the water level inside the boiler drum. It is on the basis of the boiler pressure that the construction of the gauge glass is decided. The boiler water level indicator is an important boiler fitting as it tells the status of water level inside the steam drum of the boiler.
Related Reading: Procedure for boiler gauge glass maintenance on a ship
5) Air release valve or boiler vent:
This valve is fitted in the headers, boiler drum etc., to avoid imploding of the boiler when it is depressurized or when initially raising the steam pressure. The term implosion is just opposite of an explosion. In this scenario, the pressure inside the boiler will reduce sufficiently below atmospheric pressure to cause the shell to buckle inwards.
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6) Feed check and control v/v:
This valve controls the supply of steam supply as per the demand and is fitted in both main and auxiliary steam line after the stop valve. They are non-return valves with a visible indication of open and closed position.
7) Pressure gauge connection:
The pressure gauge can be fitted in the superheater, boiler drum and wherever it is necessary to read the real-time pressure reading from the local station.
Related Reading: Different types of mechanical measuring tools and gauges used on ships
8) Boiler blowdown valve:
A bottom blowdown valve is used to empty the boiler either completely for maintenance purpose or partially for water treatment of boiler when the chloride level in the boiler water is on a higher side.
9) Scum blow down valve:
It&#;s a shallow dish type arrangement fitted at the normal water level which allows the blowdown of floating impurities, oil foaming etc. from the water surface.
Related Reading: Blow Down Procedure For Marine Boiler
10) Sampling connection:
Generally, a sampling water cock arrangement is also fitted with the cooler, in series, so that water sample can be collected at any time for feed water analysis.
Related Reading: Understanding Boiler Feed Water Contamination
11) Whistle valve:
If there is a provision for the steam whistle in the ship, then steam is supplied directly from the boiler through a small bore type non-return valve known as whistle valve.
12) Low-Level alarm:
This is a device used to initiate audible warning at low water level condition. Another shut down alarm (burner cut off) is fitted below this level (Low-Low Level alarm) to prevent overheat of boiler drum.
Related Reading: Troubleshooting boiler starting failure
13) Soot blowers:
Required to blow the soot and the combustion products from the tube surfaces. It is operated by steam or compressed air.
14) Automatic feed water regulator:
This device is essential to ensure appropriate water level in all load conditions and is fitted in the feed line. Multiple element feedwater control system is used in boilers with high evaporation rate.
15) Manhole:
The boiler is provided with multiple manhole doors, allowing inside access to the crew for inspection, cleaning and maintenance of boiler tubes and internal parts. Usually, one door is provided in the steam drum and one in the water drum.
16) Mud box:
The mud box in the boiler is provided at the bottom of the water drum to collect the mud (muddy impurities) of the water drum
Related Read: Do&#;s and Don&#;t For Efficient Boiler Operations On Ship
17) TDS Sensor and Probe:
Nowadays, most of the modern boilers are provided with this arrangement to monitor the total dissolved solids within the boiler water continuously. The sensor compares the true value with the set point, and if the value is on the higher side, an audio-visual alarm is given. A manual blowdown can be done to introduce fresh feedwater to the system to lower the total dissolved solids.
Over to you..
Do you know any other important boiler mounting that should be added to the list?
Let&#;s know in the comments below.
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Disclaimer :
The information contained in this website is for general information purposes only. While we endeavour to keep the information up to date and correct, we make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with respect to the website or the information, products, services, or related graphics contained on the website for any purpose. Any reliance you place on such information is therefore strictly at your own risk.
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About Author
An ardent sailor and a techie, Anish Wankhede has voyaged on a number of ships as a marine engineer officer. He loves multitasking, networking, and troubleshooting. He is the one behind the unique creativity and aesthetics at Marine Insight.
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