Central Heating Radiators

Why choose Victorian Plumbing?

Finding the right convector radiator should be simple. As the UK’s largest bathroom retailer, we stock a wide range of Type 11, 21 and 22 radiators in popular sizes for quick delivery, with clear guidance to help you choose the right output and footprint for every room.

• Extensive range, ready to go. Type 11, 21 and 22 options in the most-asked-for sizes and heights for straightforward replacements.
• Fast delivery. Many lines are kept in our warehouse with next day delivery available on selected radiators.
• Free standard delivery across the UK on orders over £499. Clear delivery options at checkout with no surprises.
• 0% finance on orders over £250. Spread the cost to suit your budget at checkout.
• Rated Excellent by customers. Thousands of verified reviews for quality and service you can trust.
• Helpful tools and guidance. Expert buying advice to help you choose with confidence.

 

Not sure where to start? These quick answers will help you pick the right central heating radiator.

 

What are central heating radiators?

Central heating radiators (often called convector radiators) connect directly to your boiler. Hot water circulates through the radiator panels and fins, warming the surrounding air. They provide steady, reliable heat and are the most common heating choice in UK homes.

 

What's the difference between Type 11, Type 21 and Type 22 radiators?

The type refers to the number of panels and internal fins:

• Type 11 (K1): Single panel, single row of fins. These are slimmer, and so are ideal for smaller rooms.
• Type 21 (P+): Double panel, single row of fins. They provide higher output without much extra depth.
• Type 22 (K2): Double panel, double row of fins. These produce more heat, making them suitable for larger or cooler rooms.

 

Are convector radiators efficient?

Yes, when matched to the room. The finned design delivers strong, even heat at typical flow temperatures. Fit thermostatic radiator valves (TRVs) to control each room and reduce waste.

Aluminium radiators are often considered particularly efficient, as they heat up and cool down quickly and can use up to 15% less energy compared to some steel models. This is because they require less water to heat, helping to reduce running costs. Double panel convector radiators also offer increased surface area for higher heat output where needed.

Electric radiators provide another efficient option for certain spaces, offering precise room-by-room control and no heat loss through pipework.

 

Will these work with low temperature systems or heat pumps?

Yes. Opt for a higher output type/size to maintain comfort at lower flow temperatures.

 

How long do central heating radiators last?

Most standard mild steel radiators last around 10 to 15 years, depending on water quality and system maintenance. Higher-grade stainless steel models may last longer due to greater corrosion resistance. If your radiators take longer to heat up or develop cold spots, replacement may improve comfort and efficiency.

 

How do I maintain performance?

Bleeding radiators removes trapped air and helps ensure even heat output. Check your system once or twice a year, especially before winter.
Read our step-by-step guide on How to Bleed a Radiator for more information.