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Choosing a boiler size
It’s vital that you choose the correct boiler size for your home, or you might find yourself with inefficient heating and hot water. Read our article: What Size Boiler Do I Need? to discover the right size boiler for you.
Still not sure? Don’t worry – we’re here to help. Take our free, online quoting tool to help you discover the correct boiler size for your home, and the costs involved in fitting it. Bonus! You’ll be one step closer to getting a new boiler – Hurrah!
What’s the best fuel for my boiler? Generally, gas is the most popular choice for UK homeowners. Why? Because gas is the cheapest per kWh compared to Oil or LPG.
Here’s a quick break down of different fuel types:
How to find out which fuel your boiler uses
In most cases, if you’re already living in a property, then you’ll most likely know the fuel type you have. However, if considering purchasing a new home and don’t have any experience with an off-grid property, you’ll need to research what fuel type the current boiler requires. You can do this on the EPC register, where you can download a document that gives you suggestions of how to improve the overall rating and efficiency of your property which ultimately if followed will reduce your overall energy spend.
The location of your new boiler
If your boiler is an eyesore? Or, you are just looking to free up space? In any case, the location of your boiler can rapidly change the aesthetics of a room. So, make sure you select a spot that you’re happy with – ultimately, it’s going to be there for up to a decade.
Generally, the kitchen will be the most popular location for a boiler, however, other popular places can be an old airing cupboard or a garage. If space is an issue people do install boilers in lofts – there are some downsides to having a boiler installed in a loft; especially if it is a combi or system boiler. Usually, we would always recommend that you leave the boiler in the current location.
In most cases, boilers can be relocated. However, there may be many technical reasons why this would become difficult. Also another thing to consider is that moving a boiler can increase the overall cost of the installation.
Depending on the layout of your residence, relocating your boiler could generate a faster response to hot water demand, and increase your house mark interest – after-all, no one wants to buy or rent a house with a boiler in the bedroom.
If you really need to move a boiler we would suggest that you discuss this in detail with a professional plumbing and heating firm to fully understand all the technical issues involved with moving the boiler as a first point of any extensions or building works to fully understand all implications.
Another thing to bear in mind is new boiler locations can differ depending on the type of boiler you choose, as some are wall-mounted, floor mounted, and some will require a cylinder and storage combis have a larger physical size than standard combi boilers
Unless you have ornate or double panel radiators, the basic radiators in your home can be calculated at an average of 1.2 kW per radiator. To determine the boiler output needed for your home, we multiply the number of radiators you currently have by 1.2. By undertaking this calculation, we are able to size a boiler for your home.
Below, we have included a list of typical boiler sizes and the homes that they are suitable for.
- 24-25kw – Suitable for smaller properties with 1-3 bedrooms, and up to 10 radiators.
- 28-30kw – Suitable for slightly larger properties with up to 4 bedrooms and 15 radiators.
- 33-35kw – Suitable for big houses with 6-7 bedrooms and about 20 radiators.
- 40kw and above – Suitable for large properties with close to 10 bedrooms and 20 radiators.
Kilowatt output may differ for different boiler types – for example, combi, system etc.
| Boiler name||Output range (Kw)||ERP rating|| Efficiency||Warranty|
|Viessman Vitodens 200-W||5.2 to 35||A-rated||98%||10 years|
|Worcester Bosch Greenstar 30i||24||A-rated||89.9%||10 years|
|Vaillant ecoTEC Plus||25 to 38||A-rated||89.3%||10 years|
|Baxi EcoBlue Advance Combi||24 to 40||A-rated||89.1%||10 years|
|Viessmann Vitodens 050-w||4.7 to 35||A-rated||98%||10 years|
10 years on most of these brands would be offered if the installer chosen is approved by the manufacturer.
Looking to discover more? Then, why not take a look at Best Combi Boilers 2020 in the UK.
How can I get a new boiler quote? Use our free, online quote tool to help gain a better understanding of the boiler installation costs. We’ll take into account factors such as the size of your home, heating and hot water needs, to give you a realistic estimate of your new boiler installation costs.
Once you’ve received your quote, our friendly team will be in touch to ensure you have chosen the correct options for your property if not they are on hand to assist with this and hopefully producing the correct quote to meet your requirements, with a recommendation of a suitable boiler type, brand and model. Then, they’ll book you in with a registered gas safe engineer to install your new boiler.
Once you have completed your purchase with Boilerhut which we believe is a simple and straightforward process, generally a date will be agreed for your installation, you will have confirmation of this sent via text and your gas safe installer will generally arrive on site between 8-9 am they then will review the work order provided and debrief you on what work will be completed prior to them unpacking the boiler and materials. Also at this time they will make a final assessment and survey to ensure the job can be completed as per the work order. Once this has been established the work will commence. All our installers are highly trained and respectful – operating under stringent guidelines to ensure safety and respect at all times.
Generally speaking, a boiler replacement can take anything from 1 to 3 days, depending on the amount of work required.
For example, a like-for-like boiler replacement takes around 1 day to complete. Whilst, an entire system upgrade – due to change to pipework, removal of the tanks in the loft and the installation of a new hot water cylinder – can take 2-3 days to finish.
A boiler replacement can also take longer if you’re planning to move the boiler to a new location, as new pipework is required. If your boiler is gas and it’s being moved further away from the gas meter, then a bigger gas pipe may need to be installed.
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