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 5 of 17 Stelrad Radiators

stelrad-compact-k1-radiator-600mm-x-1100mm-single-panel-single-convector-143753

Stelrad Compact K1 Type 11 600 x 1100mm Single Panel Radiator Single Convector - 143753

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£113.33 inc
VAT

stelrad-compact-k1-radiator-600mm-x-1400mm-single-panel-single-convector-143755

Stelrad Compact K1 Type 11 600 x 1400mm Single Panel Radiator Single Convector - 143755

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£145.20 inc
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Save £10.18 | Was £155.38

stelrad-compact-k1-radiator-600mm-x-1600mm-single-panel-single-convector-143756

Save £5.29 | Was £118.90

stelrad-compact-k2-radiator-450mm-x-1000mm-double-panel-double-convector-143722

Stelrad Compact K2 Type 22 450 x 1000mm Double Panel Radiator Double Convector - 143722

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£140.57 inc
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Save £9.86 | Was £150.43

stelrad-compact-k2-radiator-600mm-x-700mm-double-panel-double-convector-143785

Stelrad Compact K2 Type 22 600 x 700mm Double Panel Radiator Double Convector - 143785

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£124.92 inc
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Save £12.37 | Was £137.29

stelrad-compact-k2-radiator-600mm-x-1000mm-double-panel-double-convector-143788

Save £6.64 | Was £97.82

stelrad-compact-k2-radiator-700mm-x-900mm-double-panel-double-convector-143853

Stelrad Compact K2 Type 22 700 x 900mm Double Panel Radiator Double Convector - 143853

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£180.59 inc
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Save £13.09 | Was £193.68

stelrad-compact-k2-radiator-700mm-x-1000mm-double-panel-double-convector-143854

Stelrad Compact K2 Type 22 700 x 1000mm Double Panel Radiator Double Convector - 143854

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£198.40 inc
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Save £14.13 | Was £212.53

stelrad-compact-k2-radiator-700mm-x-1100mm-double-panel-double-convector-143855

Stelrad Compact K2 Type 22 700 x 1100mm Double Panel Radiator Double Convector - 143855

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£215.98 inc
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Stelrad Compact K2 Type 22 700 x 1200mm Double Panel Radiator Double Convector - 143856

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£233.66 inc
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Page 5 of 17 Stelrad Radiators

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Stelrad Compact K1 Type 11 600 x 1100mm Single Panel Radiator Single Convector - 143753

Stelrad Compact K1 Type 11 600 x 1400mm Single Panel Radiator Single Convector - 143755

Stelrad Compact K1 Type 11 600 x 1600mm Single Panel Radiator Single Convector - 143756

Stelrad Compact K1 Type 11 600 x 2000mm Single Panel Radiator Single Convector - 143758

Stelrad Compact K1 Type 11 700 x 600mm Single Panel Radiator Single Convector - 143814

Stelrad Compact K1 Type 11 700 x 700mm Single Panel Radiator Single Convector - 143815

Stelrad Compact K1 Type 11 700 x 900mm Single Panel Radiator Single Convector - 143817

Stelrad Compact K1 Type 11 700 x 1000mm Single Panel Radiator Single Convector - 143818

Stelrad Compact K1 Type 11 700 x 1100mm Single Panel Radiator Single Convector - 143819

Stelrad Compact K1 Type 11 700 x 1200mm Single Panel Radiator Single Convector - 143820

Stelrad Compact P+ Type 21 300 x 1000mm Double Panel Radiator Single Convector - 143657

Stelrad Compact P+ Type 21 450 x 900mm Double Panel Radiator Single Convector - 143703

Stelrad Compact P+ Type 21 600 x 500mm Double Panel Radiator Single Convector - 143765

Stelrad Compact P+ Type 21 600 x 1000mm Double Panel Radiator Single Convector - 143770

Stelrad Compact P+ Type 21 600 x 1600mm Double Panel Radiator Single Convector - 143774

Stelrad Compact P+ Type 21 600 x 1800mm Double Panel Radiator Single Convector - 143775

Stelrad Compact P+ Type 21 700 x 400mm Double Panel Radiator Single Convector - 143830

Stelrad Compact P+ Type 21 700 x 700mm Double Panel Radiator Single Convector - 143833

Stelrad Compact P+ Type 21 700 x 800mm Double Panel Radiator Single Convector - 143834

Stelrad Compact P+ Type 21 700 x 900mm Double Panel Radiator Single Convector - 143835

Stelrad Compact P+ Type 21 700 x 1000mm Double Panel Radiator Single Convector - 143836

Stelrad Compact P+ Type 21 700 x 1100mm Double Panel Radiator Single Convector - 143837

Stelrad Compact P+ Type 21 700 x 1200mm Double Panel Radiator Single Convector - 143838

Stelrad Compact K2 Type 22 450 x 800mm Double Panel Radiator Double Convector - 143720

Stelrad Compact K2 Type 22 450 x 1000mm Double Panel Radiator Double Convector - 143722

Stelrad Compact K2 Type 22 600 x 700mm Double Panel Radiator Double Convector - 143785

Stelrad Compact K2 Type 22 600 x 1000mm Double Panel Radiator Double Convector - 143788

Stelrad Compact K2 Type 22 600 x 2000mm Double Panel Radiator Double Convector - 143794

Stelrad Compact K2 Type 22 700 x 400mm Double Panel Radiator Double Convector - 143848

Stelrad Compact K2 Type 22 700 x 900mm Double Panel Radiator Double Convector - 143853

Stelrad Compact K2 Type 22 700 x 1000mm Double Panel Radiator Double Convector - 143854

Stelrad Compact K2 Type 22 700 x 1100mm Double Panel Radiator Double Convector - 143855

Stelrad Compact K2 Type 22 700 x 1200mm Double Panel Radiator Double Convector - 143856

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