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

First, match the radiator’s BTU (Delta 50) band to the heat requirement of the room — the site groups radiators into ranges such as 1–999, 1000–1999, 2000–2999 and up to 10,000–25,000 BTU so you can pick a product that meets your target. As a quick guide, a small bedroom often sits in the 1000–1999 BTU band, while a medium living room commonly needs 3000–4999 BTU; larger open-plan spaces may need 5000–7000 BTU or more. Then choose a physical size that fits your wall: common heights include 600mm (many options) and tall verticals at 1600–1800mm if you have limited wall width. For example, if your living room needs about 3500 BTU you might choose a horizontal double panel radiator in the 600 x 1215mm or 600 x 1440mm sizes shown on the site.

Which radiator material is best for speed of heat and long-term performance?

Aluminium radiators heat up quickly and are lightweight, so they’re ideal if you want fast warmth and lower mass. Steel and mild steel radiators (several hundred listings) are heavier, retain heat longer and give a steadier, more even output once warm, so they suit living areas where sustained heat is useful. Each material has trade-offs: aluminium is faster but can cool quicker, while steel stores heat but responds more slowly. If you want fast-response heating in a small bathroom, aluminium suits well; for a family lounge where retained heat matters, a mild-steel panel radiator is often better.

Should I choose a vertical or horizontal radiator for a small bathroom or hallway?

Vertical radiators (about 501 products) are perfect where wall width is limited — tall models such as 1600–1800mm let you fit a high-output unit in a narrow space and free up low wall area for furniture. Horizontal radiators (around 609 products) work best under windows or across longer walls and are often available in wider options like 910–1440mm to deliver higher outputs at 600mm height. For a narrow hallway, a vertical double-flat-panel at 1800 x 455mm gives strong heat without crowding the floor; for a bathroom under a window, a horizontal 600 x 1215mm double panel provides good output and sits neatly beneath the sill.

What’s the practical difference between traditional column radiators and modern flat panel designer types?

Traditional column radiators (for example the Park Lane Colosseum range) use multiple bars or columns to give high surface area and a classic look; double or triple bar columns also make handy towel spaces in a bathroom. Modern flat-panel designer radiators (like DuraTherm double panels) have a slim, minimalist face and often deliver equivalent output in a shallower profile, so they suit contemporary interiors and tighter clearances. Choose a column if you want period styling and a tactile feel; pick a flat panel if you prefer a sleek, low-profile radiator that tucks close to the wall.

Do different colours or finishes affect performance or are they just aesthetic choices?

Colour and finish are mostly aesthetic — the catalogue shows many options such as white (551 items), anthracite (239), black (185), chrome and brass — but finish can influence maintenance and where you’ll use the radiator. For example, chrome or brass-toned radiators work well in bathrooms because they complement taps and fittings, while white is the most common, usually cost-effective choice for living spaces. Very dark finishes like anthracite will show dust and fingerprints more readily, so you might prefer white or chrome in a busy family area.

Page 34 of 34 Central Heating Radiators

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Stelrad Compact Type 33 500 x 600mm Triple Panel Radiator Triple Convector - 3053306

Stelrad Compact Type 33 500 x 700mm Triple Panel Radiator Triple Convector - 3053307

Stelrad Compact Type 33 500 x 900mmTriple Panel Radiator Triple Convector - 3053309

Stelrad Compact Type 33 500 x 1000mm Triple Panel Radiator Triple Convector - 3053310

Stelrad Compact Type 33 500 x 1100mm Triple Panel Radiator Triple Convector - 3053311

Stelrad Compact Type 33 500 x 1200mm Triple Panel Radiator Triple Convector - 3053312

Stelrad Compact Type 33 600 x 400mm Triple Panel Radiator Triple Convector - 3063304

Stelrad Compact Type 33 600 x 500mm Triple Panel Radiator Triple Convector - 3063305

Stelrad Compact Type 33 600 x 600mm Triple Panel Radiator Triple Convector - 3063306

Stelrad Compact Type 33 600 x 700mm Triple Panel Radiator Triple Convector - 3063307

Stelrad Compact Type 33 600 x 800mm Triple Panel Radiator Triple Convector - 3063308

Stelrad Compact Type 33 600 x 900mm Triple Panel Radiator Triple Convector - 3063309

Stelrad Compact Type 33 600 x 1000mm Triple Panel Radiator Triple Convector - 3063310

Stelrad Compact Type 33 600 x 1100mm Triple Panel Radiator Triple Convector - 3063311

Stelrad Compact Type 33 600 x 1200mmTriple Panel Radiator Triple Convector - 3063312

Stelrad Compact Type 33 600 x 1400mmTriple Panel Radiator Triple Convector - 3063314

Stelrad Compact Type 33 600 x 1600mm Triple Panel Radiator Triple Convector - 3063316

Stelrad Compact Type 33 600 x 1800mm Triple Panel Radiator Triple Convector - 3063318

Stelrad Compact Type 33 700 x 500mm Triple Panel Radiator Triple Convector - 3073305

Stelrad Compact Type 33 700 x 700mm Triple Panel Radiator Triple Convector - 3073307

Stelrad Compact Type 33 700 x 800mm Triple Panel Radiator Triple Convector - 3073308

Stelrad Compact Type 33 700 x 900mm Triple Panel Radiator Triple Convector - 3073309

Stelrad Compact Type 33 700 x 1000mm Triple Panel Radiator Triple Convector - 3073310

Stelrad Compact Type 33 700 x 1100mm Triple Panel Radiator Triple Convector - 3073311

Stelrad Compact Type 33 700 x 1200mm Triple Panel Radiator Triple Convector - 3073312

Stelrad Compact Type 33 700 x 1400mm Triple Panel Radiator Triple Convector - 3073314

Stelrad Compact Type 33 700 x 1600mm Triple Panel Radiator Triple Convector - 3073316

Stelrad Compact Type 33 700 x 1800mm Triple Panel Radiator Triple Convector - 3073318

Stelrad Compact Type 33 700 x 2000mm Triple Panel Radiator Triple Convector - 3073320

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

Which radiator material is best for speed of heat and long-term performance?

Should I choose a vertical or horizontal radiator for a small bathroom or hallway?

What’s the practical difference between traditional column radiators and modern flat panel designer types?

Do different colours or finishes affect performance or are they just aesthetic choices?

Filter By 1118 results

Filter By 1118 results

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

Which radiator material is best for speed of heat and long-term performance?

Should I choose a vertical or horizontal radiator for a small bathroom or hallway?

What’s the practical difference between traditional column radiators and modern flat panel designer types?

Do different colours or finishes affect performance or are they just aesthetic choices?

Filter By
1118 results

Filter By
1118 results