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Horizontal Radiators

Horizontal radiators are the go-to for reliable, even warmth. They sit neatly under windows to counter cooler air and keep living spaces comfortable day to day. To choose the right model, start with your BTU requirement so the output matches your room size. Single panels suit smaller rooms, while double panels boost heat where you need a bit more.

Measure width, height and projection so your designer horizontal radiator fits your space and furniture. Replacing an old unit? Check pipe centres to help reduce extra plumbing. Low-level options work well under bay windows or long runs of glazing, while compact lengths are ideal for utility rooms, hallways and snug layouts.

From flat panels to oval tubes and classic horizontal column designs, there’s a style to suit every interior. Keep it clean with white, go modern with anthracite or black, or choose a raw metal finish for character. Some ranges also include electric models if you’re not on central heating. Finish the look with co-ordinated valves and accessories for a polished result.

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Type 21 H750 x W800mm Double Panel Single Convector Radiator - P708K Large Image

£124.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 21 H500 x W1100mm Double Panel Single Convector Radiator - P511K Large Image

£124.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 21 H400 x W1100mm Double Panel Single Convector Radiator - P411K Large Image

£124.94

The stock status is In Stock

In Stock

Type 21 H400 x W1000mm Double Panel Single Convector Radiator - P410K Large Image

£114.94

The stock status is In Stock

In Stock

Type 21 H400 x W600mm Double Panel Single Convector Radiator - P406K Large Image

£84.94

The stock status is In Stock

In Stock

Type 11 H750 x W1600mm Compact Single Convector Radiator - S716K Large Image

£154.94

The stock status is In Stock

In Stock

Type 11 H500 x W1600mm Compact Single Convector Radiator - S516K Large Image

£124.94

The stock status is In Stock

In Stock

Type 11 H500 x W1100mm Compact Single Convector Radiator - S511K Large Image

£109.94

The stock status is In Stock

In Stock

Type 11 H500 x W1000mm Compact Single Convector Radiator - S510K Large Image

£99.94

The stock status is In Stock

In Stock

Type 11 H500 x W600mm Compact Single Convector Radiator - S506K Large Image

£84.94

The stock status is In Stock

In Stock

Type 11 H400 x W900mm Compact Single Convector Radiator - S409K Large Image

£89.94

The stock status is In Stock

In Stock

Type 11 H400 x W700mm Compact Single Convector Radiator - S407K Large Image

£84.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 11 H300 x W1600mm Compact Single Convector Radiator - S316K Large Image

£99.94

The stock status is In Stock

In Stock

Type 11 H300 x W1400mm Compact Single Convector Radiator - S314K Large Image

£99.94

The stock status is In Stock

In Stock

RND-SLN06004W

£188.63

The stock status is In Stock

In Stock

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12

£419.95

Finance from £15.74/month

The stock status is Low Stock

Low Stock

213

£356.95

Finance from £13.38/month

The stock status is Low Stock

Low Stock

213

£367.45

Finance from £13.77/month

The stock status is Low Stock

Low Stock

213

£272.95

Finance from £10.23/month

The stock status is Low Stock

Low Stock

213

£367.45

Finance from £13.77/month

The stock status is Low Stock

Low Stock

213

£314.95

Finance from £11.81/month

The stock status is Low Stock

Low Stock

213

£325.45

Finance from £12.20/month

The stock status is Low Stock

Low Stock

213

£304.45

Finance from £11.41/month

The stock status is Low Stock

Low Stock

213

£293.95

Finance from £11.02/month

The stock status is Low Stock

Low Stock

Reina Neva Horizontal Double Panel Designer Radiator - Anthracite

£449.95

Finance from £16.87/month

The stock status is In Stock

In Stock

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Recently Reviewed

Metro Horizontal Radiator - Matt Black - Double Panel (600mm High) 1180mm Wide

Great radiator

2nd March 2026

First class

Kevin J from Staffordshire- verified purchaser

Metro Horizontal Radiator - Matt Black - Double Panel (600mm High) 590mm Wide

Great radiator's

2nd March 2026

First class

Kevin J from Staffordshire- verified purchaser

Urban Horizontal Radiator - Anthracite - Double Panel (600mm High)

Modern good looking Radiator

27th February 2026

Very happy with design & build quality.

Robert B from Highland- verified purchaser

Urban Horizontal Radiator - Anthracite - Double Panel (1600mm Wide)

Beautifully constructed and great value

27th February 2026

I searched high and low to find a modern style radiator that was also budget friendly - I'm really pleased with this purchase. It was a great price and delivered quickly. When it arrived, I was blown away by how solid and heavy it felt. I can't wait to put it in place and see it add some style to my room.

Matthew B from Cornwall- verified purchaser

FAQ's

Why choose Victorian Plumbing?

As the UK’s largest bathroom retailer, we offer a wide choice of horizontal radiators in sizes, styles and heat outputs for every home. Many are in stock for faster delivery, and our tools and support help you find the right fit with confidence.

  • Wide range of styles and finishes. Flat panel, oval tube and horizontal column radiators for every space.
  • Easy configuration. Choose your orientation, colour, height and width, and see your BTU and price update instantly.
  • In-stock options for faster delivery. No long waits, with next day delivery available on selected radiators.
  • Free standard delivery over £499. Clear delivery options displayed at checkout.
  • 0% finance on orders over £250. Spread the cost in a way that suits your budget.
  • Rated Excellent by thousands of customers. Trusted for quality products and reliable service.
  • Helpful tools and guidance. Use our BTU calculator and buying guides, or speak to our team.

 

Not sure where to start? These quick guides will help you choose the right horizontal radiator.

 

What are horizontal radiators?

They’re the classic, under-window style used in most homes. They counter cooler air coming from glazing and distribute warmth evenly across the room.

 

Why choose a horizontal radiator?

Horizontal radiators offer consistent, everyday heat and are easy to position along longer walls. With plenty of widths, heights and finishes available, it’s simple to match both performance and style.

 

Are horizontal radiators as efficient as vertical ones?

Yes, horizontal radiators can be just as efficient as vertical radiators, as long as the BTU output is correctly matched to your room size. The choice usually comes down to layout, wall space and style. If you’re unsure, try our  How to Calculate BTU guide to find the right output for your space.

 

What material should I choose?

Aluminium heats up quickly and is lightweight, making alumium radiators ideal for fast warmth. Steel offers steady, reliable heat and a broader choice of designs. Match the material you prefer, then size the BTU correctly for comfort.

 

What size do I need?

Start with the BTU requirement for your room. Then select a height and width that fits your wall space. Double panel options offer more heat where needed.

 

Can I customise my radiator?

Yes, many of our horizontal radiators are fully configurable. You can choose the orientation, colour, height and width, and your BTU and price update instantly. This makes it simple to find a radiator that fits both your layout and heat requirement.

 

Can I replace a vertical radiator with a horizontal one?

Yes, but the pipe centres may differ, so pipework might need adjusting. Choosing a similar or higher BTU ensures the room stays warm.

 

Do I need new valves?

Often, yes. Match valve orientation to your pipework:

Choose a finish that complements your radiator.