Changing a radiator for a heated towel rail
I am wanting to replace a 400 x 600 radiator in a small kitchen for a heated towel rail with enough heating output. Is this possible? My kitchen's 2.55 x 2.41 and standard height. I seem to think I can looking at the BTU but wanted to check
Advice from 3 local tradespeople
Yes, it’s definitely possible to replace a standard radiator with a heated towel rail in a kitchen—but you need to make sure the towel rail has enough heat output to properly heat the space. Let’s work through it carefully.
1.Measure BTU or watts of the towel rail. Must match or exceed the heat output of the radiator for the room.
2. Check water flow: some towel rails have higher resistance, which may reduce boiler flow slightly.
3. Positioning: kitchen towel rails often go on a wall that doesn’t interfere with cupboards, worktops, or appliances.
?
If you want, I can suggest specific towel rail sizes/designs that will meet your kitchen’s heat requirement (~1000 W) so you know exactly what to buy.
Yes — replacing a 400 × 600 radiator with a heated towel rail in a kitchen of that size is usually possible, provided the towel rail you choose has sufficient heat output and the existing pipe connections are compatible.
Based on your room dimensions (2.55 m × 2.41 m = ? 6.15 m²), a conservative heating requirement for a kitchen is about 70 W/m², which gives a target of ? 430 W (that’s roughly 1,470 BTU/hr) to maintain comfort. Because kitchens often lose a little more heat (appliances, external walls, windows), I’d specify a towel rail of around 450–550 W (? 1,530–1,880 BTU/hr) as a safe target.
What to check before you buy/install
• Compare outputs — match the towel rail’s published output (at your system design temperature) to the target above.
• Hydronic vs electric — decide whether you want a plumbed (central-heating) towel rail or an electric/dual-fuel model. A plumbed rail will normally give the highest continuous heat.
• Pipe positions & valves — confirm the flow/return pipe positions and that you have compatible valves (or will need adaptors). Some towel rails require new valves or a tap connector because centre distances differ.
• Boiler flow temperature & ratings — towel rail outputs are rated at specific flow/return temps. If your boiler runs at lower temperatures, the rail will produce less heat than the rating.
• Double-bar (ladder) rails give more BTU for the same wall space than a single-bar design if you need extra output.
• Room factors — lots of external wall or a large single-glazed window may increase the required output; if in doubt choose the next size up.
If you’d like, I can:
• check the current radiator spec (dimensions or model) and convert its output, or
• visit to confirm pipe positions and recommend suitable towel rail models and valves so the replacement gives the heating you need.
— Fixzer Plumbing
Providing the BTU output is enough then yes
