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.

Page 3 of 17 Stelrad Radiators

stelrad-compact-k2-radiator-450mm-x-1100mm-double-panel-double-convector-143723

Stelrad Compact K2 Type 22 450 x 1100mm Double Panel Radiator Double Convector - 143723

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£152.57 inc
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Save £26.58 | Was £179.15

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Stelrad Compact K2 Type 22 300 x 1500mm Double Panel Radiator Double Convector - 143664

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£150.29 inc
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Stelrad Compact K1 Type 11 700 x 500mm Single Panel Radiator Single Convector - 143813

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£69.84 inc
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stelrad-compact-k1-radiator-600mm-x-600mm-single-panel-single-convector-143748

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stelrad-lst-standard-k2-radiator-800-x-560-double-panel-double-convector

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stelrad-elite-p-radiator-450mm-x-1200mm-double-panel-single-convector-8487

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stelrad-compact-k2-radiator-300mm-x-2000mm-double-panel-double-convector-143665

Page 3 of 17 Stelrad Radiators

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Stelrad Compact K2 Type 22 450 x 1100mm Double Panel Radiator Double Convector - 143723

Stelrad Compact K2 Type 22 300 x 1500mm Double Panel Radiator Double Convector - 143664

Stelrad Compact K1 Type 11 700 x 500mm Single Panel Radiator Single Convector - 143813

Stelrad Compact K1 Type 11 600 x 600mm Single Panel Radiator Single Convector - 143748

Stelrad Compact P+ Type 21 450 x 800mm Double Panel Radiator Single Convector - 143702

Stelrad Compact K2 Type 22 700 x 700mm Double Panel Radiator Double Convector - 143851

Stelrad Compact K2 Type 22 700 x 800mm Double Panel Radiator Double Convector - 143852

Stelrad Elite P+ Type 21 300 x 500mm Double Panel Radiator Single Convector - 8436

Stelrad Compact K1 Type 11 450 x 700mm Single Panel Radiator Single Convector - 143683

Stelrad Compact with Style K1 Type 11 500 x 400mm Single Panel Radiator Single Convector - 7451104

Stelrad Compact K2 Type 22 450 x 600mm Double Panel Radiator Double Convector - 143718

Stelrad Compact K2 Type 22 700 x 600mm Double Panel Radiator Double Convector - 143850

Stelrad LST Standard K2 Type 22 800 x 560mm Double Panel Radiator Double Convector - 145064

Stelrad Compact with Style K2 Type 22 600 x 600mm Double Panel Radiator Double Convector - 7462206

Stelrad Compact K2 Type 22 450 x 2000mm Double Panel Radiator Double Convector - 143728

Stelrad Compact K1 Type 11 600 x 900mm Single Panel Radiator Single Convector - 143751

Stelrad Elite P+ Type 21 450 x 1200mm Double Panel Radiator Single Convector - 8487

Stelrad Compact with Style K1 Type 11 500 x 600mm Single Panel Radiator Single Convector - 7451106

Stelrad Elite K1 Type 11 600 x 700mm Single Panel Radiator Single Convector - 8531

Stelrad LST Standard K2 Type 22 650 x 1160mm Double Panel Radiator Double Convector - 145043

Stelrad LST Standard K2 Type 22 650 x 960mm Double Panel Radiator Double Convector - 145042

Stelrad Compact P+ Type 21 600 x 800mm Double Panel Radiator Single Convector - 143768

Stelrad Compact K2 Type 22 300 x 2000mm Double Panel Radiator Double Convector - 143665

Stelrad Compact K1 Type 11 600 x 500mm Single Panel Radiator Single Convector - 143747

Stelrad Compact K1 Type 11 450 x 1600mm Single Panel Radiator Single Convector - 143690

Stelrad Elite K1 Type 11 300 x 1500mm Single Panel Radiator Single Convector - 8432

Stelrad Compact K2 Type 22 700 x 500mm Double Panel Radiator Double Convector - 143849

Stelrad Compact P+ Type 21 600 x 1200mm Double Panel Radiator Single Convector - 143772

Stelrad Compact K1 Type 11 450 x 800mm Single Panel Radiator Single Convector - 143684

Stelrad Compact P+ Type 21 450 x 700mm Double Panel Radiator Single Convector - 143701

Stelrad Compact K1 Type 11 450 x 1200mm Single Panel Radiator Single Convector - 143688

Stelrad Compact P+ Type 21 450 x 1800mm Double Panel Radiator Single Convector - 143709

Stelrad Elite K1 Type 11 450 x 500mm Single Panel Radiator Single Convector - 8462

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