Radiator T Pieces

A radiator T-piece creates an extra outlet in your heating run so you can connect a towel rail or an additional radiator to the same pipework. It helps you manage multiple heating elements from one supply, which is useful if you want a heated towel rail in a bathroom off an existing radiator circuit. The fittings on this page are made to give a leak-proof seal and improve heat spread, so you get more even warmth across connected elements.

These T-pieces come in various sizes to suit different pipe dimensions, so you should match the fitting size to your existing pipe diameter. In the UK the most common supply pipe sizes are around 15 mm (roughly 1/2 inch) for radiators, so that is often the size you'll need, but measure the outside diameter or check your existing radiator tails to be sure. Buy the T-piece in the same size to ensure a proper, leak-proof connection.

A dual fuel T-piece lets you integrate a towel rail with both your central heating and an electric element, so you can run the towel rail on heating during winter and on electricity when the central heating is off. you can keep towels warm in summer without firing up the whole heating system by switching to the rail's electric element. The Solaro dual fuel options included in our range are designed specifically for that flexibility.

Choose a finish to match your radiator and bathroom style: chrome is classic and easy to clean, matt anthracite or matt black gives a modern, bold look and hides fingerprints, while brushed brass adds warmth and a premium feel but may show water spots more readily. If you have a contemporary white or grey scheme, matt white or matt grey will blend discreetly. Think about the rest of your ironmongery so the T-piece complements taps and rails.

A correctly sized, high-quality T-piece improves flexibility without compromising performance, helping deliver more even heat distribution when you add a towel rail or extra radiator. If you add several elements to one circuit you may need to balance the system so every radiator gets the right flow, but a leak-proof T-piece reduces the risk of pressure loss. In most domestic situations a single T-piece lets you manage multiple elements effectively and neatly.