The Cost of Cast Iron Radiators Explained

When considering a new heating solution, one of the first questions we hear is about the cost of cast iron radiators. They’re a beautiful, timeless addition to any home, but it’s important to understand the investment involved.

In this guide, we’ll break down the prices, installation fees, and running costs of cast iron radiators to help you decide if they are the right choice for your home and budget. 

How Much Do Cast Iron Radiators Cost?

The simple answer is: it varies. For a compact and simple radiator, you could pay less than £100. However, prices can rise to over £1,000 for larger models, particularly those with elaborate, decorative designs or bespoke finishes.  The final price of cast iron radiators depends on a few key factors. Unlike standard steel radiators, cast iron models are often priced per section, allowing you to build a radiator that’s the perfect size for your room.

Here’s what influences the cost:

• Size and number of sections: This is the biggest factor. A small 3 or 4 column cast iron radiator for a cloakroom will cost significantly less than a large 7 column model needed for a big living room. More sections mean more material and a higher price.
• Style: A simple, clean design like a classic narrow cast iron radiator is generally more affordable than an ornate vintage radiator with intricate patterns. The more complex the casting, the higher the cost.
• Finish and Colour: We offer a range of standard paint finishes included in the price. However, specialist finishes like polished metal, antiqued effects, or a custom RAL colour will add to the overall cost.

Cost to Install Cast Iron Radiators

Installation costs will also vary based on your location and the complexity of the job. Cast iron radiators are very heavy and usually require two people to lift and position them.

You should always use a qualified plumber or Gas Safe registered engineer. For a straightforward replacement of an existing radiator, you can expect to pay between £200 - £400 for installation. If new pipework is required, this will increase the cost. We always recommend getting a few quotes from local tradespeople.

How Does the Cost of Cast Iron Radiators Compare to Other Radiators?

Upfront, cast iron radiators are more expensive than the standard pressed steel panel radiators you’ll find in most new-build homes. However, they are built for longevity and style, making them a long-term investment.

The price is more comparable to high-end aluminium or designer steel radiators. While these modern alternatives heat up faster, they don’t offer the same classic looks or the unique heat retention properties of cast iron.

Are Cast Iron Radiators Expensive to Run?

This is a common myth we’re happy to bust! No, cast iron radiators are not expensive to run. In fact, their efficiency can make them very cost-effective over time.

Here’s how they work:

• Slower to heat: Cast iron has a high thermal mass, meaning cast iron radiators take longer to heat up than steel or aluminium ones.
• Slower to cool: This is the key benefit. Once hot, a cast iron radiator holds its heat for a very long time. It continues to heat your home with a gentle, radiant warmth into the room long after your boiler has switched off.

This slow release of heat means your boiler doesn't have to fire up as often to maintain a stable room temperature. While they might use a little more energy to get up to temperature initially, their ability to retain heat provides excellent long-term efficiency, making the running costs comparable to, and in some cases better than, other radiator types.

Ready to find the perfect radiator for your home? Browse our full collection of Victorian cast iron radiators, decorative radiators, and specialist cast iron radiators today, all available with next-day or free delivery on qualifying order. Still trying to decide on your perfect radiator? Contact our friendly team for expert advice or try using our free BTU Calculator to work out the heat output you need for your living space!

Cost of Cast Iron Radiators: FAQs

Are cast iron radiators more expensive? 

Depending on the style you choose, the initial purchase price may be higher than that of a basic steel radiator. However, they are a premium product designed to last for generations, making them a worthwhile investment.

How much does a new cast iron radiator cost? 

Prices can range from under £100 for a small, simple model to over £1,000 for very large radiators, or those with ornate designs and specialist finishes.

How much does it cost to install a cast iron radiator? 

Typically, you can expect to pay a qualified plumber between £200 and £400 for standard installation of a column cast iron radiator.

What is the life expectancy of a cast iron radiator? 

With proper care, a cast iron radiator can last a lifetime. Many original Victorian radiators are still in use today, over 100 years later.

What are the most cost-effective radiators? 

For upfront cost, pressed steel radiators are cheapest. For long-term value and efficient heat retention, cast iron radiators are an excellent and cost-effective choice.

Are cast iron radiators worth the money? 

Absolutely. Modern cast iron radiators offer unbeatable durability, timeless style, and provide a comfortable, radiant heat that is hard to match. They are an investment in the character and comfort of your modern home.

Do cast iron radiators add value to a property? 

Traditional cast iron radiators are a desirable feature, particularly in period properties. They add character and a sense of quality that can be very appealing to potential buyers.

Is it cheaper to restore old radiators? 

Sometimes, but it can be a false economy. The cost of stripping, pressure testing, and refinishing an old radiator can be high, and you don’t get the same guarantees as you do with a new one.

Do cast iron radiators need special valves? 

You will need a new set of cast iron radiator valves. We recommend traditional thermostatic radiator valves (TRVs) to give you better temperature control and improve efficiency.

Why are cast iron radiators so heavy? 

The weight comes from the dense cast iron material used to make them. This density is what allows them to store and radiate heat so effectively.