Will a low surface temperature (LST) radiator heat my room as well as a traditional radiator?

Yes. Although LST radiators are designed not to exceed 43°C to the touch, they still use convection heat to deliver the room output you need; you select the required output via size, panel type and convector fins. The catalogue shows BTU output bands from under 1,000 up to nearly 10,000 (Delta 50), so you can match an LST model to a small bedroom or a large living room. a compact 500 x 560mm Type 11 single panel suits smaller rooms, while a 650 x 1250mm Type 22 double panel gives substantially more output for bigger spaces.

How do I work out the right size or BTU for an LST radiator in my room?

Use the BTU output (Delta 50) shown on each product as your primary guide, and then choose a height and width that deliver that output,common heights here are 500, 650 and 800mm, and widths range from around 560mm up to over 2,000mm. our range's filters break outputs into useful bands (e.g. 1,000–1,999, 2,000–2,999, 3,000–3,999 BTU) so you can narrow options fast. If you need a moderate output for a standard bedroom, look in the 1,000–2,000 BTU band and a compact Type 11; for open-plan rooms aim higher and choose a double or triple panel in a wider model.

What's the difference between single, double and triple panel LST radiators and which should I pick?

Single panels have the shallowest projection and usually one convector fin, making them ideal for small rooms or tight spaces. Double panels (Type 22) have two parallel panels and extra convector fins for medium to large rooms, giving a higher BTU for the same wall length. Triple panels maximise heat output and projection, so pick them when you need maximum warmth from a compact wall run.

Can you use a thermostatic radiator valve (TRV) with these LST radiators?

Yes, the LST standard range specifically allows you to fit your own thermostatic radiator valve, which helps you control temperature and save energy by zoning. Fitting a TRV to, say, a Type 11 in a bedroom gives you independent control from the rest of the house, while leaving a communal area on a higher setting. Ensure the valve connection you buy matches the radiator model you select.

Where are LST radiators most useful and when would a vertical model be better?

LST radiators are aimed at spaces where safety matters most, nurseries, schools, care homes and busy corridors, because they meet NHS surface temperature requirements and stay below 43°C to the touch. Choose a vertical orientation when wall width is limited but you have height to spare; a tall vertical 1,850mm or similar model gives strong output without taking up horizontal wall space, ideal for narrow hallways or beside a shower room.

Page 3 of 3 Low Surface Temperature Radiators

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Page 3 of 3 Low Surface Temperature Radiators

LST Radiators at Plumbworld

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

Stelrad LST Standard K2 Type 22 800 x 1160mm Double Panel Radiator Double Convector - 145067

Stelrad LST Standard K2 Type 22 800 x 1360mm Double Panel Radiator Double Convector - 145068

Stelrad LST Standard K2 Type 22 800 x 1560mm Double Panel Radiator Double Convector - 145069

Stelrad LST Standard K2 Type 22 800 x 1760mm Double Panel Radiator Double Convector - 145070

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

Stelrad LST Standard K2 Type 22 800 x 760mm Double Panel Radiator Double Convector - 145065

Stelrad LST Standard K1 Type 11 800 x 960 Single Panel Radiator Single Convector - 145050

Stelrad LST Standard Deco K1 Type 11 500 x 560mm Single Panel Radiator Single Convector - 245000

Stelrad LST Standard Deco K1 Type 11 600 x 560mm Single Panel Radiator Single Convector - 245024

Stelrad LST Standard Deco K1 Type 11 650 x 760mm Single Panel Radiator Single Convector - 245025

Stelrad LST Standard Deco K1 Type 11 650 x 960mm Single Panel Radiator Single Convector - 245026

Stelrad LST Standard Deco K1 Type 11 650 x 1160mm Single Panel Radiator Single Convector - 245027

Stelrad LST Standard Deco K1 Type 11 650 x 1360mm Single Panel Radiator Single Convector - 245028

Stelrad LST Standard Deco K2 Type 22 500 x 560mm Double Panel Radiator Double Convector - 245016

Stelrad LST Standard Deco K2 Type 22 500 x 760mm Double Panel Radiator Double Convector - 245017

Stelrad LST Standard Deco K2 Type 22 500 x 1160mm Double Panel Radiator Double Convector - 245019

Stelrad LST Standard Deco K2 Type 22 650 x 560mm Double Panel Radiator Double Convector - 245040

Stelrad LST Standard Deco K2 Type 22 650 x 760mm Double Panel Radiator Double Convector - 245041

Stelrad LST Standard Deco K2 Type 22 650 x 960mm Double Panel Radiator Double Convector - 245042

Stelrad LST Standard Deco K2 Type 22 650 x 1160mm Double Panel Radiator Double Convector - 245043

Stelrad LST Standard Deco K2 Type 22 650 x 1360mm Double Panel Radiator Double Convector - 245044

Stelrad LST Standard Deco K2 Type 22 650 x 1560mm Double Panel Radiator Double Convector - 245045

Stelrad LST Standard Deco K2 Type 22 650 x 1760mm Double Panel Radiator Double Convector - 245046

Stelrad LST Standard Deco K2 Type 22 650 x 1960mm Double Panel Radiator Double Convector - 245047

Stelrad LST Standard Deco K2 Type 22 800 x 760mm Double Panel Radiator Double Convector - 245065

Stelrad LST Standard Deco K2 Type 22 800 x 960mm Double Panel Radiator Double Convector - 245066

Stelrad LST Standard Deco K2 Type 22 800 x 1160mm Double Panel Radiator Double Convector - 245067

Stelrad LST Standard Deco K2 Type 22 800 x 1360mm Double Panel Radiator Double Convector - 245068

Stelrad LST Standard Deco K2 Type 22 800 x 1560mm Double Panel Radiator Double Convector - 245069

Stelrad LST Standard Deco K2 Type 22 800 x 1760mm Double Panel Radiator Double Convector - 245070

Stelrad LST Standard Deco K2 Type 22 800 x 1960mm Double Panel Radiator Double Convector - 245071

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