3 Germ Hot Spots Professional Cleaners Urge Homeowners to Sanitize Before Turning on the Heating

With temperatures dropping, it's likely that, if you haven't already, you're considering turning your heating on, with many homeowners doing so by 31 October.

But professional cleaners have warned that it's vital to first clean the three germiest spots, or you'll risk spreading dust, dirt and allergens around your home.

Here, they share their cleaning tips on tackling these areas and explain exactly why they're so important.

The 3 Germy Spots to Clean Before Turning on the Heating in October

1. Air Vents

First things first, says Karina Toner, cleaning expert and operations manager at Spekless, begin by cleaning vents around your home.

'Every time your heating system kicks on, air rushes through the vents, along with all the dust, pet hair, and allergens that have built up over time,' she explains. 'If left dirty, they blow debris and bacteria back into the air you breathe, lowering indoor air quality and triggering allergies.'

To do so, Scott Schrader, cleaning expert at CottageCare, advises, 'I usually remove the covers, vacuum them thoroughly with a brush attachment, then wipe them with a damp microfiber cloth and an all-purpose cleaner, such as the Method Antibacterial All-Purpose Cleaner, available at Walmart.'

You can also soak vents in warm, soapy water for about 10-15 minutes, if they're particularly grimy, adds Karina.

Importantly, air ducts should be professionally cleaned every three to five years.

2. Baseboard Heaters and Radiators

Next, turn your attention to cleaning behind radiators and low-level baseboard heaters.

These areas accumulate years of dust, which then give off a stale smell once they heat up, warns Scott, adding, 'A Swiffer Duster, available at Walmart, or a vacuum crevice tool works well for tight spots.

Then, clean baseboards and baseboard heaters with vinegar and water to finish the job.

If you're wondering how often you should clean your baseboards, our pros recommend a monthly schedule and incorporating this step into your achievable cleaning routine.

3. Under Couches and Beds

Finally, says Karina, 'It’s easy to forget what’s hiding under big pieces of furniture: Dust, crumbs, pet hair, and sometimes things you didn’t even realize you’ve dropped. When the air starts circulating again, that buildup gets stirred up and spreads through the room.'

Therefore, she recommends shifting furniture slightly and using a long vacuum attachment to reach underneath.

Debbie Lovett, owner of Plan B Cleaning, advises, 'Use a vacuum with a crevice tool, or extendable Swiffer mop.'

We recommend the Swiffer Sweep & Mop Dry + Wet Floor Mopping and Sweeping Kit available at Walmart for tackling these places where hidden dust builds up fast. Pay particular attention to the hidden areas of the living room we forget to clean, like underneath rugs and curtains.

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Meet the Experts

Debbie Lovett

Debbie is the owner of Plan: B Cleaning, a locally owned residential cleaning company serving the northside of Indianapolis. With a passion for helping clients reclaim their time, she leads a highly trained team known for detailed cleanings, clear communication, and genuine care that feels like family.

Scott Schrader

Scott is a cleaning expert at CottageCare, which is a leading home cleaning company with over 41 locations nationwide. He's a big believer in using eco-friendly cleaning solutions such as baking soda, vinegar, and essential oils.

Karina Toner

With numerous contributions in Homes & Gardens, Real Homes, The Spruce, and many more, Karina has extensive knowledge of both commercial and residential cleaning and knows better than anyone about which germy spots often get overlooked and are later regretted.

Knowing what to do beforehand is all well and good, but do you know exactly when to switch your heating on? Our dedicated guide details everything you need to know.