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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 H600 x W1500mm Compact Single Convector Radiator - S615K Large Image

£144.94

The stock status is In Stock

In Stock

Type 11 H400 x W2000mm Compact Single Convector Radiator - S420K Large Image

£139.95

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 11  H400 x W1400mm Compact Single Convector Radiator - S414K Large Image

£114.94

The stock status is In Stock

In Stock

3

5 out of 5 review stars
Metro Horizontal Radiator - White - Double Panel (600mm High) 1711mm Wide

£369.95

Finance from £13.87/month

The stock status is Due 25th Feb

Due 25th Feb

1

1 out of 5 review stars
WhiteAnthraciteMatt Black

More Options

Metro Horizontal Radiator - Matt Black - Single Panel (600mm High) 413mm Wide

£89.95

The stock status is Due 26th Jan

Due 26th Jan

Matt BlackAnthraciteWhite

More Options

Urban Horizontal Radiator - Matt Black - Double Panel (400mm High x 1180mm Wide)

£269.95

Finance from £10.12/month

The stock status is Due 26th Jan

Due 26th Jan

1

5 out of 5 review stars
Matt BlackAnthraciteWhite

More Options

Urban Horizontal Radiator - Matt Black - Double Panel (600mm High) 456mm Wide

£149.95

The stock status is Due 26th Jan

Due 26th Jan

Matt BlackAnthraciteWhite

More Options

Keswick 300 x 785mm Horizontal Radiator Matt Black 2 Column

£169.95

The stock status is In Stock

In Stock

Matt BlackAnthraciteWhiteRaw Metal

More Options

Keswick 300 x 1370mm Horizontal Radiator Matt Black 2 Column

£249.95

The stock status is In Stock

In Stock

Matt BlackAnthraciteWhiteRaw Metal

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

£144.94

The stock status is In Stock

In Stock

Urban Horizontal Radiator - Anthracite - Double Panel (600mm High) 1368mm Wide

£279.95

Finance from £10.49/month

The stock status is In Stock

In Stock

1

5 out of 5 review stars
AnthraciteMatt BlackWhite

More Options

Type 22 H500 x W900mm Compact Double Convector Radiator - D509K 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 22 H300 x W1400mm Compact Double Convector Radiator - D314K Large Image

£139.94

The stock status is In Stock

In Stock

Type 21 H600 x W2200mm Double Panel Single Convector Radiator - P622K Large Image

£289.95

Finance from £10.87/month

The stock status is In Stock

In Stock

3

4.7 out of 5 review stars
Type 21 H600 x W2000mm Double Panel Single Convector Radiator - P620K Large Image

£269.95

Finance from £10.12/month

The stock status is In Stock

In Stock

1

4 out of 5 review stars
Type 21 H600 x W1100mm Double Panel Single Convector Radiator - P611K Large Image

£144.94

The stock status is In Stock

In Stock

Type 21 H600 x W900mm Double Panel Single Convector Radiator - P609K Large Image

£124.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
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 W1400mm Double Panel Single Convector Radiator - P514K Large Image

£154.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 21 H500 x W800mm Double Panel Single Convector Radiator - P508K Large Image

£114.94

The stock status is In Stock

In Stock

Type 11 H600 x W1800mm Compact Single Convector Radiator - S618K Large Image

£154.94

The stock status is In Stock

In Stock

4

4.8 out of 5 review stars
Type 11 H600 x W1400mm Compact Single Convector Radiator - S614K Large Image

£134.94

The stock status is In Stock

In Stock

2

5 out of 5 review stars
Type 11 H600 x W600mm Compact Single Convector Radiator - S606K Large Image

£89.94

The stock status is In Stock

In Stock

Metro Horizontal Radiator - Matt Black - Single Panel (600mm High) 1003mm Wide

£159.95

The stock status is Due 22nd Jan

Due 22nd Jan

Matt BlackAnthraciteWhite

More Options

Hudson Reed Sloane 600 x 412mm Horizontal Single Panel Radiator - Satin White - HLW54 Large Image
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 Compact Single Convector Radiator - H300 x W400mm - S304K Large Image

£74.94

The stock status is In Stock

In Stock

1

5 out of 5 review stars
Type 22 H750 x W1000mm Compact Double Convector Radiator - D710K Large Image

£179.94

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

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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 Electric Smart WiFi Aluminium Radiator – 2000W Horizontal White Panel Heater, 500 x 1167mm

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.