High Output Cast Iron Radiators

Big room? Cold corner? A space that nothing seems to warm? Our high output cast iron radiators put serious BTUs where you need them. Substantial column depths and tall section options pack the heat without sprawling across your wall.

What high output cast iron radiator options do we offer?

Browse our cast iron radiators range and specify the height and section count that suits your room. For the highest BTU per section, our 4 column cast iron radiators and 6 column cast iron radiators deliver substantial heat in a compact footprint.

Why pick a high output cast iron radiator?

Think about what a single panel rad does in a draughty period room: blasts hot, then cools the moment it cycles off. Cast iron's different. The mass holds and radiates heat for hours after the boiler stops. More columns mean more surface area. More surface area means more heat.

Finish it your way

Match it to any colour we offer, including our Farrow & Ball and Little Greene partnerships. Pair with valves, wall stays and pipe sleeves in your chosen finish.

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  • Close-up of a black, multi-fin Churchill radiator heater against a light gray background.

    Churchill Cast Iron Radiator

    Height: 350mm

    Sections: 3-40 Sections

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  • A close-up of the Neo Georgian 4 Column black cast iron radiator, featuring multiple vertical sections and a valve on the top right corner.

    Neo Georgian 4 Column Cast Iron Radiator

    Height: 360 / 505 / 660 / 760 / 960mm

    Sections: 3-40 Sections

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  • Close-up of the Neo Georgian 6 Column radiator, featuring dark gray cast iron with vertical panels and decorative openings, against a light gray background.

    Neo Georgian 6 Column Cast Iron Radiator

    Height: 505 / 660 / 960mm

    Sections: 3-40 Sections

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Available in 505mm, 660mm or 960mm heights, with 3 to 40 sections. The 6-column depth gives substantial heat output per section, ideal for big living rooms, drawing rooms or large period interiors.

Shop Cast Iron Radiators by Style

Modern Cast Iron Radiators

Modern Cast Iron Radiators

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Edwardian Cast Iron Radiators

Edwardian Cast Iron Radiators

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Georgian Cast Iron Radiators

Georgian Cast Iron Radiators

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Victorian Cast Iron Radiators

Victorian Cast Iron Radiators

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Traditional Cast Iron Radiators

Traditional Cast Iron Radiators

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Vintage Cast Iron Radiators

Vintage Cast Iron Radiators

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Shop Cast Iron Radiators by Colour

Black Cast Iron Radiators

Black Cast Iron Radiators

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Blue Cast Iron Radiators

Blue Cast Iron Radiators

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White Cast Iron Radiators

White Cast Iron Radiators

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Silver Cast Iron Radiators

Silver Cast Iron Radiators

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Orange Cast Iron Radiators

Orange Cast Iron Radiators

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Shop Cast Iron Radiators by Room

Cast Iron Radiators for Living Rooms

Cast Iron Radiators for Living Rooms

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Cast Iron Radiators for Bedrooms

Cast Iron Radiators for Bedrooms

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Cast Iron Radiators for Bathrooms

Cast Iron Radiators for Bathrooms

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Cast Iron Radiators for Hallways

Cast Iron Radiators for Hallways

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DISCOVER OUR GUIDES

A Guide To Our Cast Iron Radiators
A Guide To Our Cast Iron Radiators
Why Is My Radiator Rusting on the Outside?
Why Is My Radiator Rusting on the Outside?
Cast Iron Radiators Paint: Complete Guide to Painting & Finishing
Cast Iron Radiators Paint: Complete Guide to Painting & Finishing
How to Balance Cast Iron Radiators
How to Balance Cast Iron Radiators
How Do Electric Radiators Work?
How Do Electric Radiators Work?
When Is the Best Time to Update Your Heating System?
When Is the Best Time to Update Your Heating System?
FREQUENTLY ASKED QUESTIONS
Are high output cast iron radiators worth it for big rooms?
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Yes, high output cast iron radiators are worth it for big rooms. Substantial heat per section means fewer radiators on the wall, even warmth across the space and heat that lingers long after the boiler clicks off.
Are high output cast iron radiators for sale in different sizes?
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High output cast iron radiators are available across a wide range of sizes. Specify any height from 350mm to 960mm and any section count from 3 to 40, with 4 or 6 column depths for higher BTU output.
Is a 6 column cast iron radiator higher output than a 4 column?
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A 6-column cast iron radiator is higher output per section. The extra column depth adds surface area, which adds heat. Both deliver substantial output, but 6 column wins for raw BTUs in the same wall space.
Are the best high output cast iron radiators always the tallest?
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Taller cast iron radiators are typically higher output. More section height equals more surface area equals more heat. The Churchill is the exception (at 350mm it still puts out 480 BTUs per section thanks to its column depth).
Is high output the same as high efficiency in cast iron radiators?
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High output and efficiency are not the same thing. High output is total heat delivered. Efficiency in cast iron comes from thermal mass: it keeps radiating warmth long after the boiler stops, so you get more heat for the same boiler runtime.

Reviews

★★★★★

"Absolutely first class service and product!
From the first contact with Jon, he tailored our request, gave lots of valuable information. The delivery was great organised for a time which suited us. Couldn’t be any happier with the radiators."

Jacci Madigan

★★★★★

"The radiators have brought charm & style to our downstair rooms. We have received many nice complements on them too. They are beautiful. The service provided was exceptional as was the delivery."

Clinton Basford

★★★★★

"This is the second time we have used Paladin and would recommend them 100%. From the quote, order process to delivery we could not fault anything. The radiators are perfect we love them and are delighted. Thank you all! Paul & Jacci"

Paul Madigan

Discover Our Fantastic Paint Options

Paladin Colours

Farrow & Ball

Little Greene

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Design Your Cast Iron Radiator

Use our radiator configurator to recieve a FREE quote!!