What size radiator do I need for a cloakroom?

Cloakrooms are among the smallest rooms in a UK home, so the radiator needs to be compact in dimensions whilst still delivering sufficient BTU output to keep the space warm and comfortable. Use a BTU calculator to find the exact output your cloakroom requires and always check the radiator's rated figure at Delta T50 (ΔT50) under BS EN 442 before purchasing to ensure it is up to the job despite its compact size.

Should I choose a vertical or horizontal radiator for a cloakroom?

Vertical radiators are the better choice for narrow cloakrooms where wall width is extremely limited, as they make use of wall height rather than width and can be fitted neatly into corners or tight gaps between fixtures. Horizontal radiators suit slightly larger cloakrooms and work particularly well positioned beneath a window, where they counteract cold draughts and distribute heat evenly across the room.

Can a cloakroom radiator also dry towels?

Yes, many models in the cloakroom range include ladder and rail designs that allow you to warm hand towels as well as heating the room, combining both functions in a single compact wall-mounted unit. A range of small heated towel rails is specifically sized for cloakrooms and en-suites and is worth exploring alongside flat-panel and column options if towel drying is a priority.

Are there cloakroom radiators that fit into a corner?

Yes, a range of corner radiators is specifically designed for tight spaces where standard flat-wall radiators would obstruct the room, with compact models available that tuck neatly into unused corner space without encroaching on the limited floor area of a cloakroom. Their angled profile also allows the heat to distribute across two walls simultaneously, which improves overall warmth in a very small room.

Are small cloakroom radiators as effective at heating as larger models?

Yes, provided the radiator is correctly sized for the room's BTU requirement, a compact cloakroom radiator will heat the space just as effectively as a larger model in a bigger room. All radiators in the cloakroom range are independently tested for BTU output and pressure resistance, meaning their rated heat figures are reliable and comparable regardless of physical size.

What is the best finish for a cloakroom radiator?

White is the most popular finish for cloakrooms as it reflects light back into a small space and makes the room feel larger and more open, while chrome suits cloakrooms with traditional or period-inspired fittings and complements most sanitaryware without clashing. Anthracite and matt black have become increasingly popular in more contemporary cloakroom schemes, where a bolder finish creates a deliberate design statement in a compact space.

Are aluminium radiators a good choice for a cloakroom?

Yes, aluminium radiators such as the Elvino are specifically highlighted as an excellent choice for cloakrooms because they heat up rapidly, deliver impressive BTU output relative to their compact dimensions, and are 100% recyclable with a 5-year guarantee and Trio paint technology for a durable, easy-to-clean surface. Their lightweight construction also makes wall mounting in tight spaces simpler than heavier steel equivalents.

Do cloakroom radiators need special valves?

Cloakroom radiators are compatible with standard thermostatic radiator valves (TRVs), which are sold separately and not included with the radiator, and given the limited space in a cloakroom, corner valves are often the most practical fitting where pipework emerges from the wall. Browse a full range of radiator valves covering angled, straight, and corner options across a wide selection of finishes to find the right pairing for your cloakroom radiator.

Cloakroom Radiators

Heating a downstairs toilet or a small cloakroom can be a challenge when wall space is occupied by basins and pipework. Our collection of cloakroom radiators is specifically curated to offer high heat performance within a very small footprint. These compact units ensure that even the smallest room in your home stays warm and free from dampness, providing a comfortable environment for guests and family alike.

If you have slightly more room and would like the added benefit of drying towels, you may also want to browse our small bathroom radiators. Our cloakroom models are available in both horizontal and vertical layouts, allowing you to utilise narrow strips of wall that would otherwise go to waste. Despite their smaller size, these radiators are manufactured to the same high standards as our full-sized models, using durable steel or aluminium for efficient heat distribution.

We offer a variety of modern finishes, including classic white, anthracite grey, and polished chrome, to help your radiator blend into your decor or act as a stylish feature. Every cloakroom unit is independently tested for BTU output to ensure it provides sufficient warmth for its size. Shop our range today and enjoy free UK delivery on these space-saving heating solutions.

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Imran Akhtar
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March 7, 2025

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This designer radiator looks modern and works very well.
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I love this radiator. It transfored our bathroom and it looks very nice.
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Love it so much. it just looks stunning

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