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The Arvani 800x450mm is a vertical white towel rail built to warm a cloakroom or a compact en-suite and dry towels at the same time. It gives 1,282 BTU, or 376W, measured at ΔT50.
It takes standard 1/2" connections and a pair of 15mm radiator valves, which are ordered separately.
Specification
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Size: 800x450mm
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BTU: 1282 - 962
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Watt Output: 376 - 282W
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Recommended Area: Up to 4m²
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Sleek flat panel design in a crisp white gloss finish
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SPCC mild steel with triple layer plating
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Vertical wall-mounted design, perfect for tight spaces
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Durable, powder-coated to withstand over 200 hours of salt spray testing
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Compatible with UK central heating systems – BS EN442 certified
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1/2" inlets and outlets, pressure tested to 10 bar
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Valves not included – sold separately
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5-year manufacturer warranty
BTU values are provided as a range based on ΔT50°C (standard UK rating) and ΔT30°C (lower temperature systems). Low Output: ≤1200 BTU, Medium-High Output: 1201–1700 BTU, High Output: 1701–2100 BTU.
Frequently asked questions
Will it fit a narrow wall?
Yes — 450mm is narrow enough for most awkward walls. The height is where it takes its space: 800mm, so check you have headroom above the skirting and below any shelf or cabinet.
Will this heat the room on its own?
On its own it is rated to about 4m². 1,282 BTU is enough for a bathroom of that size with average insulation. If your room is larger, has an outside wall or a big window, treat this as a towel warmer and keep a separate radiator.
Why are two BTU figures quoted?
1,282 BTU is the output at ΔT50, the standard UK rating. 962 BTU is the same rail at ΔT30, which is closer to what you get on a heat pump or a condensing boiler running a low flow temperature. Size from the figure that matches your system.
How does it compare with the other Arvani sizes?
The Arvani range runs from 650x450mm at 1,060 BTU to 1200x600mm at 2,487 BTU, in 10 sizes. This one is 800x450mm and 1,282 BTU, so there is a smaller and a larger option either side of it.
- Type: Heated Towel Rail
- Width: 450mm
- Height: 800mm
- Panels: Single Panel
- Heat output: Medium (1201–1700 BTU)
- Connection position: Side
- Valve style: Angled or Straight
Help choosing
A towel rail should keep the bathroom warm, not just dry towels. Check it's powerful enough for the room.
Enter your room size to see the heat output you need.
- Match the output to the room. Use the BTU figure from the calculator. In a bathroom, a towel rail alone often heats a small room; bigger rooms may need a radiator too.
- Check your connections. Measure the gap between your pipes and choose valves to suit: angled, straight or corner (see the valve helper on our valve pages).
- Heat pump? At the lower water temperatures heat pumps run at, expect roughly half the listed output.
- Summer use. Central heating rails only warm up when the heating is on. A dual fuel kit adds an electric element where the rail supports it.
Still not sure? Send us your measurements and we'll check for you.
