How do I choose the right size and heat output for my room?

Match the radiator's BTU output band to your room's heat loss and the physical space you have. Our range shows outputs from under 1,000 BTU right up to 10,000-25,000 BTU and sizes from compact widths (400-600mm) to large panels (over 2,000mm wide and up to 2,200mm high). a small bathroom will often be met by radiators in the 1,000-2,000 BTU band and a compact 300-600mm height, while a large living room might need something in the 4,000-8,000 BTU band with a wider or taller double-panel model. If you're unsure, look for the BTU band that most closely matches your room calculation and then pick a width/height that fits the wall space.

What's the difference between Compact, Planar, Elite and LST ranges, and which is best for my room?

Compact radiators are efficient, practical panels that suit most rooms; Planar is a sleeker, contemporary range for a modern look; Elite gives a simple, budget-friendly option; and LST (low surface temperature) is designed for safety in healthcare, schools or where you need a cool-to-touch surface. If you want a slim, modern focal point choose Planar (also available in vertical styles), while for a family bathroom or a care setting LST gives peace of mind thanks to its safety focus. Compact or Elite are sensible choices if you want high heat output at a lower cost.

What do Type 11, Type 21 and Type 22 mean, and how do they affect performance?

Those Type numbers describe panel and convector layers: Type 11 is one panel, one convector (slimmer and lower output), Type 21 is two panels, one convector (more heat with modest depth), and Type 22 is two panels, two convectors (higher output and greater depth). So for a tight alcove under a window you might pick a Type 11 to save space, whereas a living room or open plan area often benefits from a Type 22 to deliver more heat without needing excessive width. Triple-panel types are also available when you need very high output from a compact footprint.

Will Stelrad radiators work with my heat pump or other low-temperature systems?

Yes, many Stelrad models are designed to work seamlessly with traditional boilers and modern low-temperature systems such as heat pumps. To compensate for the lower water temperature you'll usually select a larger surface area or a higher output model (a double panel double convector or a taller vertical unit) to achieve the same room temperature. A vertical Planar or a taller Compact K2 is a practical choice if you're switching to a heat pump and want both style and higher output.

Can I get vertical radiators or different finishes to suit my decor?

You can, the range includes both horizontal and vertical orientations, with vertical options available in taller sizes (1,600-2,200mm heights and slim widths such as 400mm), making them ideal for narrow wall spaces or as a design statement. Finishes range from clean, contemporary panels to more traditional profiles like the Deco and Elite styles, so you can pick a minimalist Planar for a modern kitchen or a Compact/Deco unit to match a classic bathroom. a 1,800 x 400mm Planar vertical gives a dramatic, space-saving focal point in a hallway.

Stelrad Radiators

If you’re looking for a radiator, there’s no better choice than the extensive range of options from Stelrad. With a reputation for quality, innovation, and style, Stelrad offers a diverse selection of radiators designed to meet the needs of any space, from modern apartments to traditional homes and commercial settings. Whether you're after a sleek, minimalist design or a bold, statement piece, Stelrad has the perfect solution to complement your interior while delivering exceptional heating performance.

Each Stelrad radiator is built with cutting-edge technology, ensuring maximum energy efficiency, high heat output, and long-lasting durability. Their radiators are designed to work seamlessly with both traditional boilers and modern, low-temperature heating systems, such as heat pumps, making them a future-proof investment for your home. With options like the Compact range, the stylish and contemporary Planar series, or the safety-focused LST radiators, Stelrad caters to every aesthetic and functional requirement. You can also choose from a range of sizes, from Stelrad vertical radiators to horizontal radiators.

Beyond style and efficiency, Stelrad is committed to sustainability, using high-quality, recyclable materials and eco-friendly manufacturing processes. With Stelrad, you’re not just choosing a radiator, you’re choosing reliable warmth, elegant design, and a greener future. Find the perfect radiator to enhance your space today.

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stelrad-lst-i-plus-k1-radiator-500-x-1050mm

Stelrad LST i Plus K1 Type 11 1050 x 500mm Single Panel Radiator, Single Convector - 145202

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£510.90 inc
VAT

stelrad-lst-i-plus-k2-radiator-500x1450mm

Stelrad LST i Plus K2 Type 22 500 x 1450mm Double Panel Radiator Double Convector - 145228

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£771.48 inc
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Save £177.01 | Was £948.49

stelrad-lst-i-plus-k2-radiator-500x850mm

Stelrad LST i Plus K2 Type 22 500 x 850mm Double Panel Radiator Double Convector - 145225

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£603.19 inc
VAT

stelrad-lst-standard-k2-radiator-500-x-1760-double-panel-double-convector

Stelrad LST Standard K2 Type 22 500 x 1760mm Double Panel Radiator Double Convector - 145022

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£714.28 inc
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Save £153.65 | Was £867.93

stelrad-planar-k2-radiator-700mm-x-1400mm-double-panel-double-convector-140988

Save £31.78 | Was £636.59

stelrad-lst-i-plus-k2-radiator-650x1250mm

Stelrad LST i Plus K2 Type 22 650 x 1250mm Double Panel Radiator Double Convector - 145235

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£844.62 inc
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Save £39.95 | Was £884.57

stelrad-planar-k2-radiator-600mm-x-1200mm-double-panel-double-convector-140957

Stelrad Planar K2 Type 22 600 x 1200mm Double Panel Radiator Double Convector - 140957

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£467.82 inc
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stelrad-compact-k2-radiator-600mm-x-1200mm-double-panel-double-convector-143790

Stelrad Compact K2 Type 22 600 x 1200mm Double Panel Radiator Double Convector - 143790

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£206.48 inc
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Save £25.52 | Was £232.00

stelrad-compact-k2-with-style-panel-radiator-1600-x-600mm-double-panel-double-convector-32162206

Save £54.46 | Was £317.87

stelrad-planar-vertical-radiator-1800mm-x-500mm-double-panel-double-convector-k2-30182205

Save £33.68 | Was £306.20

stelrad-compact-k2-radiator-600mm-x-1800mm-double-panel-double-convector-143793

Stelrad Compact K2 Type 22 600 x 1800mm Double Panel Radiator Double Convector - 143793

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£305.83 inc
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Save £37.81 | Was £343.64

stelrad-lst-i-plus-k2-radiator-500-x-1050mm

Save £17.80 | Was £161.74

stelrad-compact-with-style-k1-radiator-500mm-x-800mm-single-panel-single-convector-7451108

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Stelrad Radiators

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Stelrad LST i Plus K1 Type 11 1050 x 500mm Single Panel Radiator, Single Convector - 145202

Stelrad LST i Plus K2 Type 22 500 x 1450mm Double Panel Radiator Double Convector - 145228

Stelrad LST i Plus K2 Type 22 500 x 850mm Double Panel Radiator Double Convector - 145225

Stelrad LST Standard K2 Type 22 500 x 1760mm Double Panel Radiator Double Convector - 145022

Stelrad Planar K2 Type 22 700 x 1400mm Double Panel Radiator Double Convector - 140988

Stelrad Planar K2 Type 22 500 x 1200mm Double Panel Radiator Double Convector - 140939

Stelrad Planar K2 Type 22 600 x 1000mm Double Panel Radiator Double Convector - 140956

Stelrad Planar K2 Type 22 700 x 1200mm Double Panel Radiator Double Convector - 140987

Stelrad Planar K2 Type 22 700 x 800mm Double Panel Radiator Double Convector - 140985

Stelrad Compact with Style K2 Type 22 600 x 1400mm Double Panel Radiator Double Convector - 7462214

Stelrad LST i Plus K2 Type 22 650 x 1250mm Double Panel Radiator Double Convector - 145235

Stelrad Planar K2 Type 22 600 x 1200mm Double Panel Radiator Double Convector - 140957

Stelrad Compact K2 Type 22 600 x 1200mm Double Panel Radiator Double Convector - 143790

Stelrad Compact K2 Type 22 with Style 1600 x 600mm Double Panel Radiator Double Convector 32162206

Stelrad LST i Plus P+ Type 21 800 x 650mm Double Panel Radiator Single Convector - 145264

Stelrad Compact K2 Type 22 300 x 2500mm Double Panel Radiator Double Convector - 143666

Stelrad LST Standard K2 Type 22 800 x 960mm Double Panel Radiator Double Convector - 145066

Stelrad Planar K2 Type 22 600 x 600mm Double Panel Radiator Double Convector - 140954

Stelrad Compact P+ Type 21 450 x 2000mm Double Panel Radiator Single Convector - 143710

Stelrad Planar K2 1800 x 500mm Double Panel Vertical Radiator Double Convector - 30182205

Stelrad Compact with Style K1 Type 11 600 x 1200mm Single Panel Radiator Single Convector - 7461112

Stelrad Planar K2 Type 22 600 x 800mm Double Panel Radiator Double Convector - 140955

Stelrad Compact K2 Type 22 600 x 1600mm Double Panel Radiator Double Convector - 143792

Stelrad Compact K2 Type 22 600 x 1800mm Double Panel Radiator Double Convector - 143793

Stelrad LST i Plus K2 Type 22 500 x 1050mm Double Panel Radiator Double Convector - 145226

Stelrad LST i Plus K1 Type 11 650 x 650mm Single Panel Radiator Single Convector - 145208

Stelrad Planar K2 Type 22 600 x 1400mm Double Panel Radiator Double Convector - 140958

Stelrad Planar K2 Type 22 500 x 1000mm Double Panel Radiator Double Convector - 140938

Stelrad Compact K2 Type 22 600 x 800mm Double Panel Radiator Double Convector - 143786

Stelrad Compact with Style K1 Type 11 500 x 800mm Single Panel Radiator Single Convector - 7451108

Stelrad LST Standard K2 Type 22 500 x 560mm Double Panel Radiator Double Convector - 145016

Stelrad Planar K2 Type 22 500 x 1600mm Double Panel Radiator Double Convector - 140941

Stelrad Compact K2 Type 22 450 x 1400mm Double Panel Radiator Double Convector - 143725

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