How To Choose The Right Size Of Towel Radiator

To choose the right size of towel radiator (also called a towel rail) for your bathroom, you need to consider two main factors:

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✅ 1. Heat Output (BTUs or Watts)

You need enough heat to warm the room and dry towels. This is measured in BTUs (British Thermal Units) or Watts.

🔢 General BTU Guidelines (for average bathrooms):

✅ Note: If your bathroom is poorly insulated or has large windows, add ~10–20% more BTUs.

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✅ 2. Physical Size of the Radiator

Once you know the heat output you need, look for a towel radiator that delivers that many BTUs or Watts. The physical dimensions depend on:

• Wall space available (height & width)

• How many towels you want to hang

• Pipe centres (if replacing an old radiator)

Example Sizes:

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🛠️ How to Calculate It Precisely:

You can use an online BTU calculator where you input:

• Room dimensions (length × width × height)

• Double or Single Glazing windows

• Type of Room