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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 W1100mm Compact Double Convector Radiator - D511K Large Image

£159.94

The stock status is In Stock

In Stock

Type 21 H400 x W900mm Double Panel Single Convector Radiator - P409K Large Image

£114.94

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 11 H600 x W800mm Compact Single Convector Radiator - S608K Large Image

£94.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 11 H400 x W1800mm Compact Single Convector Radiator - S418K Large Image

£124.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 11 H400 x W1600mm Compact Single Convector Radiator - S416K Large Image

£114.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
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
Metro Horizontal Radiator - White - Single Panel (600mm High) 413mm Wide

£89.95

The stock status is Due 1st Mar

Due 1st Mar

WhiteAnthraciteMatt Black

More Sizes

Keswick 750 x 1010mm Horizontal Radiator Anthracite 4 Column

£299.95

Finance from £11.24/month

The stock status is Due 22nd Jan

Due 22nd Jan

AnthraciteMatt BlackWhiteRaw Metal

More Options

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 Due 9th Feb

Due 9th Feb

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

£249.95

The stock status is In Stock

In Stock

Keswick 600 x 605mm Cast Iron Style Traditional 4 Column Matt Black Radiator

£239.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Matt BlackAnthraciteWhiteRaw Metal

More Options

Hudson Reed Revive 600 x 586mm Horizontal Double Panel Radiator - Gloss White - HL338D Large Image

£199.95

The stock status is In Stock

In Stock

1

4 out of 5 review stars
Hudson Reed Sloane 600 x 412mm Horizontal Single Panel Radiator - Anthracite - HLA54 Large Image
Hudson Reed Sloane 600 x 992mm Horizontal Double Panel Radiator - Anthracite - HLA56D Large Image

£329.95

Finance from £12.37/month

The stock status is In Stock

In Stock

Hudson Reed Sloane 600 x 586mm Horizontal Double Panel Radiator - Satin White - HLW55D Large Image
Type 21 H600 x W700mm Double Panel Single Convector Radiator - P607K Large Image

£114.94

The stock status is In Stock

In Stock

Type 11 H400 x W500mm Compact Single Convector Radiator - S405K Large Image

£79.94

The stock status is In Stock

In Stock

21

£379.95

Finance from £14.24/month

The stock status is Low Stock

Low Stock

213

£469.95

Finance from £17.62/month

The stock status is In Stock

In Stock

Type 22 H500 x W1000mm Compact Double Convector Radiator - D510K Large Image

£139.94

The stock status is In Stock

In Stock

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 W1600mm Compact Double Convector Radiator - D416K Large Image

£189.94

The stock status is In Stock

In Stock

Type 22 H400 x W1000mm Compact Double Convector Radiator - D410K Large Image

£124.94

The stock status is In Stock

In Stock

Type 21 H500 x W1600mm Double Panel Single Convector Radiator - P516K Large Image

£174.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 21 H400 x W1000mm Double Panel Single Convector Radiator - P410K Large Image

£114.94

The stock status is In Stock

In Stock

 Type 11 H600 x W1600mm Compact Single Convector Radiator - S616K Large Image

£144.94

The stock status is In Stock

In Stock

Type 11 H600 x W700mm Compact Single Convector Radiator - S607K Large Image

£94.94

The stock status is In Stock

In Stock

Type 11 H500 x W2400mm Compact Single Convector Radiator - S524K Large Image

£179.95

The stock status is In Stock

In Stock

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Need help with Horizontal Radiators?

Recently Reviewed

Keswick 600 x 425mm Cast Iron Style Traditional 3 Column Regal Green Radiator

A very smart option for older builds

12th January 2026

Looks great, kicks out loads of heat for the size and retains it well after the heating is turned off.

Selina Grazia from Norfolk- verified purchaser

Urban 500 x 946mm Smart WiFi Aluminium Electric Radiator - 1500W White

Pleased with radiator

12th January 2026

I’m happy with the radiator. There needs to be improvements with the instruction booklet in that it does not tell you that the radiator needs to be in comfort mode to link to the wi-fi, very frustrating

Tracy from Blackwood

Type 11 H500 x W800mm Compact Single Convector Radiator - S508K Large Image

Value for Money

11th January 2026

The Kartell K-RAD Kompact from Victoria Plumbing offers solid value for money, delivering reliable heat output and a clean, modern look at a very reasonable price. Build quality feels sturdy and well-finished, comparable to more expensive brands. Overall, it’s a cost-effective choice if you want a smart, efficient radiator without paying premium prices.

calum austin from Greater London- verified purchaser

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

Value for Money

11th January 2026

The Kartell K-RAD Kompact from Victoria Plumbing offers solid value for money, delivering reliable heat output and a clean, modern look at a very reasonable price. Build quality feels sturdy and well-finished, comparable to more expensive brands. Overall, it’s a cost-effective choice if you want a smart, efficient radiator without paying premium prices.

calum austin from Greater London- 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.