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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 11 H400 x W600mm Compact Single Convector Radiator - S406K Large Image

£79.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars

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

£99.94

The stock status is In Stock

In Stock

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Type 11 H300 x W500mm Compact Single Convector Radiator - S305K Large Image

£74.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars

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Stelrad 450 x 1400mm Compact Horizontal Line Concept K2 Type 22 White Double Panel Radiator

£319.95

Finance from £11.99/month

The stock status is Low Stock

Low Stock

WhiteAnthracite

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12

£419.95

Finance from £15.74/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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213

£272.95

Finance from £10.23/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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213

£262.45

Finance from £9.84/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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1213

£649.95

Finance from £24.37/month

The stock status is Low Stock

Low Stock

TCPBLTOWRAD1300ETC05
Type 11 H900 x W900mm Compact Single Convector Radiator - S909K Large Image

£159.94

The stock status is In Stock

In Stock

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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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C513

SALE

£439.95

Was £494.84

Finance from £16.49/month

The stock status is Low Stock

Low Stock

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Reina Flat Horizontal Double Panel Designer Radiator - White Large Image

£399.95

Finance from £14.99/month

The stock status is Low Stock

Low Stock

3

5 out of 5 review stars

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213

£325.45

Finance from £12.20/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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213

£241.45

The stock status is Low Stock

Low Stock

AnthraciteWhite

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Hudson Reed Revive 600 x 412mm Horizontal Double Panel Radiator - Gloss White - HL337D Large Image

£139.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
213

£356.95

Finance from £13.38/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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213

£293.95

Finance from £11.02/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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21

£335.95

Finance from £12.59/month

The stock status is Low Stock

Low Stock

1

5 out of 5 review stars
AnthraciteWhite

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213

£325.45

Finance from £12.20/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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Monza 355 x 1600 Horizontal Anthracite Venetian Style Designer Radiator Large Image
Metro Horizontal Radiator - Anthracite - Double Panel (600mm High) 1003mm Wide

£239.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
AnthraciteMatt BlackWhite

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213

£367.45

Finance from £13.77/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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213

£367.45

Finance from £13.77/month

The stock status is Low Stock

Low Stock

AnthraciteWhite

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Need help with Horizontal Radiators?

Recently Reviewed

Urban Horizontal Radiator - Anthracite - Single Panel (600mm High) 988mm Wide

Radiator

7th June 2026

Delivered on time exactly as described Value for money

William M from Durham- verified purchaser

Urban Horizontal Radiator - Anthracite - Single Panel (600mm High) 836mm Wide

Radiators

7th June 2026

Exactly as described delivered on time Perfect condition easy to install

William M from Durham- verified purchaser

Keswick 600 x 1010mm Cast Iron Style Traditional 3 Column Antique Brass Radiator

Better in real life

6th June 2026

This is a stunning radiator, worth every penny. The pictures on line make it look a lot more gold but it’s actually got an almost two tone bronze/brass effect so it’s a lot more classy and subtle, will be buying again for other rooms

Steph B from St Helens

Keswick 600 x 1190mm Cast Iron Style Traditional 3 Column White Radiator

Review From Trustpilot

4th June 2026

Looks great, clean & fresh, and modernises a room

MR D- 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.