How do I decide between a horizontal and a vertical flat panel radiator for my room?

Think about wall space and the look you want. Horizontal radiators suit traditional runs beneath windows and come in many widths, while vertical versions rise up the wall and are ideal where you have little horizontal space but need more heat. Vertical radiators often give a higher output for their footprint because they use taller heights. If you want a bold design statement, choose anthracite or black; for a subtle finish choose white.

What’s the difference between single, double and triple panel radiators in performance and projection?

Single panels have one convector fin and the shortest projection, making them good for smaller rooms. Double panels contain two parallel panels and more fins, giving higher heat output for medium to large rooms. Triple panels maximise heat output and have the largest projection, best for very cold or large spaces. our range filters show many single and double options (around 257 singles and 191 doubles), so you'll find sizes to match your room.

How do I use the BTU output listings to pick the right radiator size?

Each radiator lists a BTU output at a standard Delta 50, and our range filters group radiators into ranges from under 1,000 up to 25,000 BTUs. Work out your room's heat requirement in BTUs and then select a radiator in the matching filter band, small bathrooms often fall in the 1,000–1,999 range, while living rooms typically need 3,000–6,000 or more. Many models include heights (300–2200 mm) and widths (from about 280 mm up to 2,000 mm) so you can balance physical size with the required output.

Which finishes and colours are available and how do they affect the look of my kitchen or bathroom?

Flat panel radiators come in a wide palette: white is the most common, with popular statement colours like anthracite and black also widely available, plus brass, copper, grey and even mirror finishes. A white horizontal radiator blends discreetly into a classic kitchen, while an anthracite vertical unit becomes a contemporary focal point in a modern bathroom. Different finishes won’t materially change performance; they mainly influence style and how the radiator complements tiles, cabinets or paint.

Are flat panel radiators a practical choice for smaller rooms or tight spaces?

Yes. Flat panel radiators are made from sleek low-carbon steel and have less projection than traditional panel or column radiators, so they sit closer to the wall and save space. If you’re tight on horizontal wall area, a tall vertical model (many around 1600–1800 mm high) gives strong heat output without taking up width. For a small ensuite, a single flat panel 600 x 455 mm can provide adequate warmth while staying unobtrusive.

Page 3 of 14 Flat Panel Radiators

DuraTherm Vertical Double Flat Panel Designer Radiator - 1600 x 530mm Black

5.0

860 ratings

More Options Available

£229.99 inc
VAT

Solaro Malmesbury 1800 x 375mm Single Panel Vertical Designer Radiator Aluminium Silver

More Options Available

£429.00 inc
VAT

DuraTherm Horizontal Double Flat Panel Designer Radiator - 600 x 1215mm Black

5.0

708 ratings

More Options Available

£244.95 inc
VAT

DuraTherm Horizontal Double Flat Panel Designer Radiator - 600 x 1060mm Black

5.0

708 ratings

More Options Available

£209.95 inc
VAT

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 605mm Black

5.0

708 ratings

More Options Available

£89.95 inc
VAT

DuraTherm Vertical Double Flat Panel Designer Radiator - 1600 x 305mm Black

5.0

860 ratings

More Options Available

£139.95 inc
VAT

duratherm-horizontal-double-flat-panel-designer-radiator-600-x-455mm-black

DuraTherm Double Flat Panel Designer Radiator - 600 x 455mm Black

5.0

708 ratings

More Options Available

£79.95 inc
VAT

Save £20.04 | Was £99.99

DuraTherm Vertical Single Flat Panel Designer Radiator - 1800 x 530mm Black

5.0

860 ratings

More Options Available

£129.99 inc
VAT

Save £20.00 | Was £149.99

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 1215mm Black

5.0

708 ratings

More Options Available

£129.99 inc
VAT

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 760mm Black

5.0

708 ratings

More Options Available

£89.99 inc
VAT

Save £10.00 | Was £99.99

DuraTherm Vertical Single Flat Panel Designer Radiator - 1600 x 305mm Black

5.0

860 ratings

More Options Available

£84.95 inc
VAT

DuraTherm Vertical Single Flat Panel Designer Radiator - 1600 x 530mm Black

5.0

860 ratings

More Options Available

£139.95 inc
VAT

DuraTherm Vertical Single Flat Panel Designer Radiator - 1800 x 305mm Black

5.0

860 ratings

More Options Available

£89.99 inc
VAT

Save £10.01 | Was £100.00

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 1440mm Black

5.0

708 ratings

More Options Available

£149.99 inc
VAT

DuraTherm Vertical Single Flat Panel Designer Radiator - 1800 x 605mm Black

5.0

860 ratings

More Options Available

£189.99 inc
VAT

stelrad-compact-with-style-k1-radiator-300mm-x-500mm-single-panel-single-convector-7431105

Save £21.95 | Was £153.09

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

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£171.17 inc
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Stelrad Compact with Style K1 Type 11 500 x 1200mm Single Panel Radiator Single Convector - 7451112

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£222.35 inc
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Save £22.49 | Was £244.84

stelrad-compact-with-style-k1-radiator-600mm-x-400mm-single-panel-single-convector-7461104

Save £21.90 | Was £238.90

stelrad-compact-with-style-k1-radiator-600mm-x-1200mm-single-panel-single-convector-7461112

Save £32.32 | Was £297.46

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Stelrad Compact with Style K2 Type 22 500 x 1200mm Double Panel Radiator Double Convector - 7452212

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£298.78 inc
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Save £36.15 | Was £334.93

Page 3 of 14 Flat Panel Radiators

Stylish Flat Panel Radiators at Plumbworld

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450 results

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450 results

DuraTherm Vertical Double Flat Panel Designer Radiator - 1600 x 530mm Black

Solaro Malmesbury 1800 x 375mm Single Panel Vertical Designer Radiator Aluminium Silver

DuraTherm Horizontal Double Flat Panel Designer Radiator - 600 x 1215mm Black

DuraTherm Horizontal Double Flat Panel Designer Radiator - 600 x 1060mm Black

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 605mm Black

DuraTherm Vertical Double Flat Panel Designer Radiator - 1600 x 305mm Black

DuraTherm Double Flat Panel Designer Radiator - 600 x 455mm Black

DuraTherm Vertical Single Flat Panel Designer Radiator - 1800 x 530mm Black

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 1215mm Black

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 760mm Black

DuraTherm Vertical Single Flat Panel Designer Radiator - 1600 x 305mm Black

DuraTherm Vertical Single Flat Panel Designer Radiator - 1600 x 530mm Black

DuraTherm Vertical Single Flat Panel Designer Radiator - 1800 x 305mm Black

DuraTherm Horizontal Single Flat Panel Designer Radiator - 600 x 1440mm Black

DuraTherm Vertical Single Flat Panel Designer Radiator - 1800 x 605mm Black

Stelrad Compact with Style K1 Type 11 300 x 500mm Single Panel Radiator Single Convector - 7431105

Stelrad Compact with Style K1 Type 11 300 x 1000mm Single Panel Radiator Single Convector - 7431110

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

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

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

Stelrad Compact with Style K1 Type 11 500 x 1200mm Single Panel Radiator Single Convector - 7451112

Stelrad Compact with Style K1 Type 11 600 x 400mm Single Panel Radiator Single Convector - 7461104

Stelrad Compact with Style K1 Type 11 600 x 600mm Single Panel Radiator Single Convector - 7461106

Stelrad Compact with Style K1 Type 11 600 x 800mm Single Panel Radiator Single Convector - 7461108

Stelrad Compact with Style K1 Type 11 600 x 1000mm Single Panel Radiator Single Convector - 7461110

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

Stelrad Compact with Style K1 Type 11 600 x 1400mm Single Panel Radiator Single Convector - 7461114

Stelrad Compact with Style K2 Type 22 300 x 1000mm Double Panel Radiator Double Convector - 7432210

Stelrad Compact with Style K2 Type 22 500 x 400mm Double Panel Radiator Double Convector - 7452204

Stelrad Compact with Style K2 Type 22 500 x 600mm Double Panel Radiator Double Convector - 7452206

Stelrad Compact with Style K2 Type 22 500 x 800mm Double Panel Radiator Double Convector - 7452208

Stelrad Compact with Style K2 Type 22 500 x 1000mm Double Panel Radiator Double Convector - 7452210

Stelrad Compact with Style K2 Type 22 500 x 1200mm Double Panel Radiator Double Convector - 7452212

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