Are you wondering why aluminium radiators are the warmest?

Perhaps you think it’s a myth, or are just starting to look into aluminium radiators as a viable choice for your home. And let me tell you; they definitely are! In fact, I see no reason not to have them in your home.

As an experienced engineer, I actually first learned about these from a customer. They certainly turned my head!

Let me explain below why aluminium radiators are the warmest, and also some other reasons why you might want to consider them for your home.

Why are aluminium radiators the warmest?

This may not immediately sound like I’m answering your question, but bear with me. Aluminium radiators are lighter in weight, which is a benefit if we need very large radiators to be carried and maneuvered into place. They also heat up faster due to aluminium radiators being a very good conductor of heat.

They also hold less water, which is another reason they heat up faster. But there’s something else; the fact that they hold less water and heat up faster helps them produce some of the highest outputs for size compared to steel and cast iron radiators.

Let’s look at a quick example. Take a standard steel double panel convector Stelrad radiator, measuring in at 600mm x 1000mm, and compare it with an aluminium radiator of the same size. You’ll find the aluminium radiator will give more heat output.

What else makes these a good choice?

If you’re looking for something other than the standard run-of-the-mill steel panel radiators, you’ve found it. There are many choices of styles and colours available, however if the heat output is important and you don’t want to give up too much wall space, aluminium radiators can be a great choice compared to other designer radiators.

They may be more expensive than standard steel panel radiators, but they’re not silly expensive, either. They also look better and have many other advantages over steel radiators.

TIP: Check out my blog featuring everything you need to know about aluminium radiators.

Advice from an experienced engineer

If you think aluminium radiators could be the best buy for your home, check out to get a better idea of some of the styles available. It’s a great starting point!

The first time I fitted aluminium radiators was in a large flat with high ceilings. The lady wanted the steel radiators removed, as she found they just took too long to heat her rooms. She specified aluminium radiators that she’d previously had in a property in Italy, and was convinced they heated faster and were warmer.

I was unsure at first. However, these did the job well, and turned out to be just what she was looking for. Upon seeing the results, it really made me stand back and take note.

One thing to bear in mind about aluminium radiators is that although they’ll heat up fast, they’ll cool down fast, too. At least, faster than your typical white pressed steel radiators.


I hope you’ve enjoyed reading. Aluminium radiators are a fantastic choice to have in your home if you don’t mind paying a bit extra. They come in many styles and can give your home a great look. So, definitely do your research and decide if aluminium radiators might be a good choice for you!

Do you have any questions about aluminium radiators? Let me know in the comments. I’m always around to help!