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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 H400 x W400mm Double Panel Single Convector Radiator - P404K Large Image

£84.94

The stock status is In Stock

In Stock

Type 22 H500 x W1100mm Compact Double Convector Radiator - D511K Large Image

£159.94

The stock status is In Stock

In Stock

Type 22 H500 x W900mm Compact Double Convector Radiator - D509K Large Image

£124.94

The stock status is In Stock

In Stock

Type 22 H500 x W600mm Compact Double Convector Radiator - D506K Large Image

£99.94

The stock status is In Stock

In Stock

Type 22 H500 x W500mm Compact Double Convector Radiator - D505K Large Image

£99.94

The stock status is In Stock

In Stock

Type 21 H600 x W700mm Double Panel Single Convector Radiator - P607K Large Image

£114.94

The stock status is In Stock

In Stock

Type 21 H500 x W1200mm Double Panel Single Convector Radiator - P512K Large Image

£144.94

The stock status is In Stock

In Stock

Type 21 H400 x W800mm Double Panel Single Convector Radiator - P408K Large Image

£99.94

The stock status is In Stock

In Stock

Type 21 H400 x W500mm Double Panel Single Convector Radiator - P405K Large Image

£84.94

The stock status is In Stock

In Stock

Type 11 H400 x W1800mm Compact Single Convector Radiator - S418K Large Image

£124.94

The stock status is In Stock

In Stock

Type 11 H400 x W1100mm Compact Single Convector Radiator - S411K Large Image

£94.94

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 W1400mm Compact Single Convector Radiator - S314K Large Image

£99.94

The stock status is In Stock

In Stock

Reina Rione Single Panel Steel Designer Radiator - White

£199.95

The stock status is In Stock

In Stock

More Sizes

Hudson Reed Revive 600 x 992mm Horizontal Double Panel Radiator - Gloss White - HL339D Large Image

£269.95

Finance from £10.12/month

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Hudson Reed Revive 600 x 1398mm Horizontal Double Panel Radiator - Anthracite - HLA40D Large Image

£399.95

Finance from £14.99/month

The stock status is In Stock

In Stock

Urban Vertical Radiator - Anthracite - Double Panel (1600mm High) 456mm Wide

£169.95

The stock status is In Stock

In Stock

More Sizes

Premier - Salvia Double Panel Radiator - 635 x 863mm - White - HSA004 Large Image

£249.95

The stock status is In Stock

In Stock

Metro H600 x W826mm Matt Black Electric Only Single Panel Radiator with On/Off Element

Inc. Bluetooth

£309.95

Finance from £11.62/month

The stock status is Due 28th Nov

Due 28th Nov

Hudson Reed Sloane 600 x 586mm Horizontal Double Panel Radiator - Anthracite - HLA55D Large Image
Hudson Reed Sloane 600 x 412mm Horizontal Double Panel Radiator - Satin White - HLW54D Large Image
Hudson Reed Sloane 600 x 992mm Horizontal Double Panel Radiator - Satin White - HLW56D Large Image

£299.95

Finance from £11.24/month

The stock status is In Stock

In Stock

Hudson Reed Sloane 600 x 1572mm Horizontal Double Panel Radiator - Satin White - HLW60D Large Image

£449.95

Finance from £16.87/month

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 W700mm Compact Single Convector Radiator - S507K Large Image

£89.94

The stock status is In Stock

In Stock

213

SALE

£299.95

Was £349.95

Finance from £11.24/month

The stock status is Low Stock

Low Stock

213

SALE

£359.95

Was £399.95

Finance from £13.49/month

The stock status is Low Stock

Low Stock

Type 22 H400 x W400mm Compact Double Convector Radiator - D404K Large Image

£89.94

The stock status is In Stock

In Stock

Type 22 H300 x W400mm Compact Double Convector Radiator - D304K Large Image

£79.94

The stock status is In Stock

In Stock

Type 22 H750 x W1000mm Compact Double Convector Radiator - D710K Large Image

£179.94

The stock status is In Stock

In Stock

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Need help with Horizontal Radiators?

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.