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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 22  H500 x W800mm Compact Double Convector Radiator - D508K Large Image

£124.94

The stock status is In Stock

In Stock

Type 22 H400 x W1200mm Compact Double Convector Radiator - D412K Large Image

£144.94

The stock status is In Stock

In Stock

Type 21 H500 x W2200mm Double Panel Single Convector Radiator - P522K Large Image

£249.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 21 H500 x W1800mm Double Panel Single Convector Radiator - P518K Large Image

£199.94

The stock status is In Stock

In Stock

2

4.5 out of 5 review stars
Type 11 H600 x W2000mm Compact Single Convector Radiator - S620K Large Image

£169.95

The stock status is In Stock

In Stock

4

4.2 out of 5 review stars
Type 11 H600 x W1000mm Compact Single Convector Radiator - S610K Large Image

£114.94

The stock status is In Stock

In Stock

2

4.5 out of 5 review stars
21

SALE

£339.95

Was £379.95

Finance from £12.74/month

The stock status is In Stock

In Stock

213

SALE

£269.95

Was £299.95

Finance from £10.12/month

The stock status is In Stock

In Stock

Hudson Reed Revive 600 x 412mm Horizontal Single Panel Radiator - Anthracite - HLA37 Large Image

£139.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Keswick Grey 600 x 1355mm Cast Iron Style Traditional 2 Column Radiator

£309.95

Finance from £11.62/month

The stock status is In Stock

In Stock

Type 22 H600 x W1500mm Compact Double Convector Radiator - D615K Large Image

£234.95

The stock status is In Stock

In Stock

Type 22 H500 x W1500mm Compact Double Convector Radiator - D515K Large Image

£204.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 22 H500 x W1200mm Compact Double Convector Radiator - D512K Large Image

£169.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 22 H500 x W1000mm Compact Double Convector Radiator - D510K Large Image

£139.94

The stock status is In Stock

In Stock

Type 22 H400 x W1100mm Compact Double Convector Radiator - D411K Large Image

£139.94

The stock status is In Stock

In Stock

Type 11 H500 x W1300mm Compact Single Convector Radiator - S513K Large Image

£114.94

The stock status is In Stock

In Stock

Type 11 H500 x W500mm Compact Single Convector Radiator - S505K Large Image

£79.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Keswick 600 x 425mm Cast Iron Style Traditional 4 Column Matt Black Radiator

£199.95

The stock status is In Stock

In Stock

Matt BlackAnthraciteWhiteRaw Metal

More Options

Urban H600 x W608mm White Electric Only Single Panel Radiator with Bluetooth Thermostatic Element

Inc. Bluetooth

£279.95

Finance from £10.49/month

The stock status is Due 28th Nov

Due 28th Nov

Keswick 300 x 1370mm Horizontal Radiator Matt Black 2 Column

£249.95

The stock status is In Stock

In Stock

Matt BlackAnthraciteWhiteRaw Metal

More Options

Hudson Reed Revive 600 x 412mm Horizontal Single Panel Radiator - Gloss White - HL337 Large Image

£139.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
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
Type 22 H400 x W1000mm Compact Double Convector Radiator - D410K Large Image

£124.94

The stock status is In Stock

In Stock

Type 22 H300 x W2000mm Compact Double Convector Radiator - D320K Large Image

£194.95

The stock status is In Stock

In Stock

Type 21 H750 x W900mm Double Panel Single Convector Radiator - P709K Large Image

£134.94

The stock status is In Stock

In Stock

Type 11 H300 x W2000mm Compact Single Convector Radiator - S320K Large Image

£119.95

The stock status is In Stock

In Stock

1

4 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

213

SALE

£319.95

Was £349.95

Finance from £11.99/month

The stock status is In Stock

In Stock

Urban H600 x W608mm Anthracite Electric Only Single Panel Radiator with Bluetooth Thermostatic Element

Inc. Bluetooth

£279.95

Finance from £10.49/month

The stock status is Available

Available

Keswick 300 x 1370mm Cast Iron Style Traditional 4 Column Matt Black Radiator

£369.95

Finance from £13.87/month

The stock status is In Stock

In Stock

Matt BlackAnthraciteWhiteRaw Metal

More Options

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Recently Reviewed

Metro Horizontal Radiator - Anthracite - Double Panel (1600mm Wide) 413mm High

Good sturdy radiator

24th November 2025

Looks good, can be mounted horizontally or vertically.

Nathan Tyrrell from Kent- verified purchaser

Keswick 600 x 1550mm Cast Iron Style Traditional 3 Column White Radiator

nice looking modern radiator

24th November 2025

it radiates well and looks great. delivery was fast, although there was no help to bring it inside

Kate Redman from - verified purchaser

Keswick 750 x 1010mm Horizontal Radiator Anthracite 3 Column

good looking radiator

24th November 2025

it radiates well and looks great. delivery was fast, although there was no help to bring it inside

Kate Redman from - verified purchaser

Urban Electric Smart Wifi Aluminium Panel 1500W Energy Saving Horizontal White Radiator - 500 x 725mm

Radiator

23rd November 2025

Heats up room quickly

Matthew Deacon from - 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.