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    What are High BTU Radiators?

    High BTU (British Thermal Unit) radiators are radiators designed to produce a higher amount of heat output compared to standard radiators. The BTU rating measures the heat output of a radiator per hour. High BTU radiators are typically used to heat larger spaces or rooms that have higher heat demands. They can be installed in rooms such as poorly insulated areas, open-plan rooms, or spaces with high ceilings. A high BTU is usually 8,000 and above.

    What type of high output radiators are available?

    Here at Stelrad, we have a wide range of high output radiators in a variety of shapes and styles, including panel, column and tubed.

    The K3 range is the highest output radiator on the market. Our Home Series Compact K3 range has a fantastic heat output from such a small radiator footprint. The K3 radiator is available in lengths 400mm to 2400mm and heights of 300mm to 700mm. K3 radiators have a triple panel, triple convector design that maximises heat output while minimising energy consumption.

    Other high output radiators available at Stelrad include column radiators, which are made from vertical metal tubes. Column radiators distribute heat evenly and effectively, especially high BTU models. Stelrad also stock high BTU towel radiators, which not only warm your towels but can also heat your bathroom too.

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    Yellow Caliente vertical radiator
    Colour: +29 Various Sizes
    Home Series Caliente Rail Coloured From: £416.58 Incl VAT £333.27 Incl VAT The Stelrad Home Series Caliente Rail is a hugely popular tubular option, its an easy choice for any bathroom or kitchen and any interior setting whether it's a modern, contemporary or period interior. Available in a range of colours making it simple to match and contrast colour schemes.
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    classic column horizontal pastel bluecolumn radiator in blue
    Colour: +29 Various Sizes
    Home Series Column Horizontal Coloured With Feet From: £536.46 Incl VAT £429.17 Incl VAT Stelrad Home Series Column Horizontal Coloured has colour options to harmonise with the boldest or most neutral of decors.
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    Colour: +29 Various Sizes
    Home Series Column Vertical Coloured From: £526.53 Incl VAT £421.23 Incl VAT Offering a chic solution that can accentuate the use of traditional materials and enhance a contemporary or period appearance, the Stelrad Home Series Column Vertical Coloured is the perfect choice.
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    Colour: +29 Various Sizes
    Home Series Column Vertical Coloured With Feet From: £647.37 Incl VAT £517.90 Incl VAT Offering a chic solution that can accentuate the use of traditional materials and enhance a contemporary or period appearance, the Stelrad Home Series Column Vertical Coloured is the perfect choice.
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    Colour: Various Sizes
    Home Series Como From: £446.67 Incl VAT £268.00 Incl VAT The Stelrad Home Series Como is a stylish towel rail with flat brushed stainless-steel rectangular tubes to create a modern, contemporary look in any bathroom or kitchen.
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    Colour: Various Sizes
    Home Series Compact Flat Concept From: £256.55 Incl VAT £230.90 Incl VAT The Stelrad Home Series Flat Concept offers a minimalist design which is complemented by the elegance of it's Anthracite Grey finish
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    Home Series Compact Flat Vertical Concept From: £666.30 Incl VAT £599.68 Incl VAT The Stelrad Home Series Flat Vertical Concept has a sleek and simplistic finish in the dignified Anthracite Grey. Making this a popular choice to complement any d'cor.
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    Colour: Various Sizes
    Home Series Compact Vertical Line Vertical Concept From: £628.36 Incl VAT £565.53 Incl VAT The Stelrad Home Series Vertical Line Vertical Concept, features a fashionable vertical lined front face in the popular Anthracite Grey.
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    Home Series Concord Chrome Vertical From: £393.59 Incl VAT The Stelrad Home Series Concord Chrome Vertical is a stunning minimalist vertical flat panel designer radiator in a modern eye-catching mirror Chrome finish.
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    blue lo line concord radiator
    Colour: +31 Various Sizes
    Home Series Concord Lo-Line Coloured From: £327.05 Incl VAT £310.71 Incl VAT Conveniently designed to squeeze into small spaces in your home, the Stelrad Home Series Concord Lo Line Coloured has it all.
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    Front on image of Stelrad's Concord Rail radiator in orange against an white backgroundStelrad's Concord Rail Radiator against a green wall in a family bathroom
    Colour: +28 Various Sizes
    Home Series Concord Rail Coloured From: £402.26 Incl VAT £321.81 Incl VAT The Stelrad Home Series Concord Rail offers a stunning alternative to tubular towel rails with flat tube on tube and will enhance any kitchen or bathroom. Available in a range of colours making it simple to match and contrast colour schemes.
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    Stelrad Concord Side Chrome radiatorStelrad Concord Side Chrome radiator in a kitchen
    Colour: Various Sizes
    Home Series Concord Side Chrome From: £294.67 Incl VAT £235.73 Incl VAT The Stelrad Home Series Concord Side Chrome oozes functionality and style with its stunning stainless steel finish. Gone are the days when towel rails were merely a heating device, they are now a design element too.
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    Colour: Various Sizes
    Home Series Concord Side Concept From: £345.90 Incl VAT £276.73 Incl VAT The Stelrad Home Series Concord Side Concept radiator in a matt finish Anthracite Grey is a straight tubular design with piping at one side giving a sleek, stylish look to any room.
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    Ultramarine Blue Concord Slimline radiator against a white backgroundPigeon Blue Concord Slimline radiator in a living room
    Colour: +32 Various Sizes
    Home Series Concord Slimline Coloured From: £412.60 Incl VAT £391.97 Incl VAT The slim and stylish tubed design of the Stelrad Home Series Concord Slimline Coloured is available in over 30 colours.
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    Black Softline Concord Slimline radiatorStelrad's Concord Slimline Concept radiator for homes in black
    Colour: Various Sizes
    Home Series Concord Slimline Concept From: £462.23 Incl VAT £439.12 Incl VAT The Stelrad Home Series Concord Slimline Concept radiator in Anthracite Grey makes a statement and maximises space in your room, without compromising on output.
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    Colour: Various Sizes
    Home Series Concord Vertical From: £311.87 Incl VAT £296.28 Incl VAT The Stelrad Home Series Concord Vertical is visually appealing and constructed from slim, flat tubes.
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    Colour: +31 Various Sizes
    Home Series Concord Vertical Coloured From: £384.91 Incl VAT £365.67 Incl VAT Offering an array of over 30 colour options, the Stelrad Home Series Concord Vertical Coloured can be suited to any d'cor.
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    Heavy Duty Deco LR Radiator
    Colour: Various Sizes
    Home Series Heavy Duty Deco From: £505.90 Incl VAT £404.73 Incl VAT Built strong to last long!
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    Home Series Heavy Duty Planar From: £505.90 Incl VAT £404.73 Incl VAT Stelrad's standard Planar design radiator has rapidly become a favourite within the commercial market.
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    Home Series Lecco From: £768.68 Incl VAT £461.20 Incl VAT The exclusive Stelrad Home Series Lecco Towel Rail adds a designer touch of luxury to your room with its stunning combination of brushed and polished steel finishes.
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    LST i Plus Horizontal Line ColouredLST i Plus Horizontal Line Coloured
    Colour: Various Sizes
    Home Series LST i Plus Horizontal Line Coloured From: £434.99 Incl VAT £369.75 Incl VAT The Stelrad Home Series LST i Plus Horizontal Line is a safety must have. Offering high heat output but safe to touch, with an aesthetically pleasing lined front.
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    LST Standard Horizontal Line ColouredLST Standard Horizontal Line Coloured
    Colour: Various Sizes
    Home Series LST Standard Horizontal Line Coloured From: £354.66 Incl VAT £301.48 Incl VAT The Stelrad Home Series LST Standard Horizontal Line radiators are the Low Surface Temperature heating option for your home.
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    Swing Red cut out
    Colour: +30 Various Sizes
    Home Series Swing From: £909.74 Incl VAT £727.78 Incl VAT A brand new innovation in statement radiators - a perfect focal point for any room
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    Colour: +30 Various Sizes
    Home Series Ultra From: £299.11 Incl VAT £239.29 Incl VAT The bespoke Stelrad Home Series Ultra is a modern designer radiator with optional towel rails, making it perfectly suitable to bathrooms and kitchens. Available in over 30 made to order colour options, it can be tailored to work in any space.
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    Colour: +30 Various Sizes
    Home Series Vertical Ultra From: £860.61 Incl VAT £688.48 Incl VAT The Stelrad Home Series Vertical Ultra radiator is as unique as you are with the option of one or two towel rails and can be tailored to suit any bathroom or kitchen. Available in over 30 made to order colour options, it can be tailored to work in any space.
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    Accessories Concept side panel From: £16.43 Incl VAT

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When is a high output radiator beneficial?

In larger rooms, such as living rooms, open-plan kitchens, or spaces with high ceilings, a standard radiator may not provide sufficient heat. High output radiators for large spaces can deliver the necessary warmth to cover the larger area more efficiently. These radiators are also ideal for poorly insulated rooms, particularly those in older houses. High output radiators for large spaces will help maintain a comfortable indoor environment even if some heat escapes through walls, windows, or doors.

A single high output radiator can sometimes be used instead of multiple radiators in the same room. This can reduce the cost of radiator installation and maintenance, as well as save space and streamline the heating system.

You could also benefit from high output radiators for large rooms if you need spaces to heat up quickly This could be in the morning or when you’ve returned home after a long day. High output radiators for large rooms can be especially useful in bedrooms or living areas that need to warm up fast during colder seasons.

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FAQs

HIGH BTU RADIATOR FAQs

How do I calculate the BTU requirements for a room?

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There are several factors that influence the BTU requirements, including the type of room, dimensions of the room and number of windows. The type of windows (such as single or double glazed) will also influence the BTU requirements. You can use an online BTU calculator to help you calculate the BTU for your room .

 

What’s the difference between a high BTU radiator and a standard radiator?

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High BTU radiators are specifically designed to deliver more heat than standard radiators. They are ideal for large or poorly insulated rooms that require a higher heat output. Standard radiators are a better option for smaller rooms or spaces with better insulation as they have a lower heat output.

Radiators with a higher heat output have a higher energy consumption than radiators with a small heat output. Having said that, while a standard radiator may use less energy, they can struggle to heat larger spaces properly. This can potentially cause the heating system to work harder to maintain a comfortable room temperature.

Do I need a high BTU radiator for every room?

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You don’t necessarily need a radiator with a high heat output in every room. High BTU radiators are best suited for larger rooms or spaces with poor insulation. Smaller rooms don’t usually require a high BTU radiator, as it could overheat the space. It’s essential to match the BTU output to the room’s needs, so consider the size and insulation of your room when buying radiators.

Are high BTU radiators more energy-efficient?

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While they produce more heat, the BTU radiator’s energy efficiency depends on how well the radiator matches the room’s needs. If you have a radiator with too high a BTU rating in a small room, it might waste energy. The correct BTU rating for your room ensures efficient heating, no matter the size of radiator.

How can I maintain a high BTU radiator?

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It’s important to regularly bleed the radiator and flush the radiator as part of its maintenance. A poorly maintained radiator will have bad energy efficiency and could cost you more money in energy bills.