Radiators Will Heat Rooms Faster After Doing This Simple Task in September

All you need is a hairdryer

A black radiator in a dark blue and white attic bedroom with a stack of suitcases, orange candle, and corner of a blue bed with grey bedding
(Image credit: Future / ONE REPRESENTS LTD)

Fall has officially begun, and temperatures will soon begin to drop across the country. It's likely you haven't turned on your heating just yet, but before you do, there's one simple task to do this September that HVAC experts suggest ticking off.

While it will take just a few minutes and requires only a humble hairdryer, it's an easy way to ensure your radiators heat up faster when you need them in fall and winter.

Here, experts explain exactly how to do it, and why it works to make heating more efficient in your own home.

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How to Heat Rooms Quicker This Fall

As mentioned, this simple tip requires only a hairdryer, such as the Revlon Compact Hair Dryer, available at Walmart, and involves using it to blow away built-up dust and debris that's settled on radiators over the spring and summer months.

'Use the cool air setting, work from the top down, hold the hairdryer a few inches away from the radiator, and try to angle it downward through the top grille or between the fins,' advises Bob Caldwell, Owner of Cardwell HVAC. This makes cleaning behind radiators easier than ever, and means you can simply use your best vacuum to clean beneath them once finished.

Just be careful you don't hold the hairdryer too close, warns Bob. 'It can push dust deeper into the radiator rather than blow it out toward the floor,' he explains.

Chair and footstool by a window with a black radiator, pink curtain and marble fireplace

This trick works effectively even for smaller radiators, like this one.

(Image credit: Future)

Much like the way that moving furniture away makes radiators heat up faster, this trick ultimately works by improving air circulation.

'It helps the radiator heat up the rooms a little bit faster because there's no layer of dust that can sometimes act as insulation and reduce heat transfer,' says Bob. 'A hairdryer helps where a regular vacuum, even with a brush or crevice attachment, can’t reach. It simply blows away all loose dust sitting between narrow fins and in tight gaps.

'A vacuum sucks up the dust, but a hairdryer pushes air through the radiator, which allows you to remove even the dust sitting deep between the fins, behind internal panels, and in narrow gaps away from the surface.'

Then, for any residual dust, use a tool for perfectly dust-free radiators, such as a Scrub Daddy Damp Duster, available at Amazon.

This simple way to tackle this germ hot-spot to clean before turning the heating on takes just a few minutes, but you'll reap the rewards all fall and winter long.

What to Shop

From radiator cleaning essentials to the best space heaters, these cold-weather buys are guaranteed to keep a home warm all day.

All prices were correct at the time of publication.

Meet the Expert

A headshot of Bob Cardwell
Bob Cardwell

Bob is the Owner of Cardwell HVAC and a seasoned heating, cooling, and plumbing expert with over a decade of hands-on experience serving South Jersey homeowners and businesses. 


This quick fix for slow-heating radiators instantly solves cold spots.

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Ottilie Blackhall
Sleep Editor

Ottilie joined Homes & Gardens in 2024 as the News Writer on Solved, after finishing a Master's in Magazine Journalism at City, University of London. Now, as the Sleep Editor, she spends her days producing content on all things sleep – from mattresses and sheets to protectors and pillows, all of which she tests in her own home. She also has particular expertise in home fragrance, covering everything from candles to reed diffusers, and frequently attends showrooms, including Vispring and Frette, and events hosted by the likes of Diptyque, Jo Malone, and Malin+Goetz.

Previously, she has written for Livingetc and Motorsport Magazine, and also has a Master's degree in English Literature and History of Art from the University of Edinburgh.