What’s The Best Radiator Material?

What’s The Best Radiator Material?

Most radiators are made from one of four different materials: mild steel, cast iron, stainless steel or aluminium. What a radiator is made from affects how quickly it heats and cools.  In this guide, we’ll walk you through the pros and cons of the different materials. When you’re done deciding, be sure to buy your radiator online here at PoshRads for superior quality and great savings.

Mild Steel

By far the most common, most of the radiators that you have ever seen will have been made from mild steel.  This is largely because they are cheap to produce and cheap to buy. The major downside of mild steel radiators is that they can be liable to rust from the inside, and therefore typically have shorter guarantees than radiators made from other materials. However, if you regularly get your boiler serviced and add an inhibitor to the system, this should prevent rust from forming.  Make sure you do this and you can expect a mild steel radiator to last for a lifetime.

4 Columns Laser Klassic Horizontal Tubular Steel

£186.00 – £389.95

In a range of no less than twelve sizes, this tubular mild steel radiator comes in a calming, classic cream, making your room homely and warm.

Cast Iron

Cast iron was extremely prior to more modern radiator materials.  It looks beautiful, but does tend to take a while to heat up and cool down again. If the Victorian look is what you’re after, but you don’t fancy cast iron for this reason, then stainless steel versions of old cast iron designs are available here at PoshRads. 

Terma Plain 2 Cast Iron Radiator

£693.42 – £1,287.78

Gorgeous, isn’t it?  It is produced in Europe with pristine detailing and uncompromising casting precision, with superior craftsmanship and attention to detail.  I really love this old-fashioned look.  

Stainless Steel

Stainless steel doesn’t rust from the inside like mild steel can, and stays warm for long after you turn off the heating. However, not all stainless steel is created equal, so make sure you buy your radiator online from PoshRads to be sure you’re getting the best quality.



£283.14 – £617.71

The Florida is one of the top horizontal radiators online here at PoshRads.  With superb stainless steel finishing and a fairly traditional design, we can see why.  


Whilst aluminium is technically the best material, it’s also more costly than the others, although it’s great for long term savings.  If you’re looking to save money in the short term when buying your radiator online, another material might be better for you.

Aluminium is a superconductor, meaning the moment you turn it on it immediately starts to heat your home. It also cools immediately so achieving the perfect temperature is easy. They’re also lightweight and easy to install (so lower installation fees). The efficiency of aluminium radiators means that you can heat the same sized room with a much smaller radiator, or one radiator instead of two or three.   

Terma Camber Electric

£330.72 – £375.96

This electric radiator is available in four colours, and it can be controlled from your smart phone, so you can control your heating from anywhere!

To take a look at any of these radiators, just click on the links next to the pictures.  You will find all the information you need to help make a decision, such as sizes, colours and BTU ratings.  

We also have a vast range of vertical radiators online, if you need to save space.  All of our radiators can be delivered direct to your door, making PoshRads a great place to buy radiators online.  Happy heating!

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