Are Electric Hand Dryers Really More Hygienic Than Towels?

Walk into many modern hospitals, office blocks, shopping centres or motorway service stations today and you will often find electric hand dryers replacing the once-familiar roller towels or paper towels. 

The shift has largely been driven by two arguments: cost and environmental impact. Electric dryers eliminate the need to constantly replenish paper supplies and reduce waste sent to landfill, while also lowering ongoing servicing costs for facilities managers.

From a purely economic perspective, the logic is clear. A single hand dryer can serve thousands of uses with minimal maintenance, whereas paper towels must be manufactured, transported, stocked, and disposed of. For large institutions handling hundreds or even thousands of visitors daily, those savings quickly add up.

Environmental considerations also play a role. Many organisations now aim to reduce paper consumption and waste streams as part of broader sustainability commitments. On paper (no pun intended), electric dryers appear to be the greener option.

However, hygiene is where the debate becomes more complicated.

An architect cousin of mine always refused to specify electric hand dryers in the commercial buildings he designed. 

His reasoning was simple: he believed they could act as breeding grounds for bacteria and germs, particularly in busy public washrooms where hygiene standards may not always be perfect.

His concern is not entirely unfounded. Several scientific studies have suggested that certain types of high-speed hand dryers can disperse bacteria into the surrounding air. 

When a powerful stream of air blasts water from hands, it may also blow microbes from the skin and surrounding surfaces into the room. 

Some research has even found that dryers can pull in bacteria from the washroom air and deposit them onto freshly washed hands.

Paper towels, by contrast, physically remove moisture and bacteria from the skin when used to dry hands. They also allow people to use the towel to turn off taps or open the bathroom door, reducing the chance of re-contamination.

Of course, not all dryers are created equal. Modern models increasingly incorporate HEPA filters and antimicrobial surfaces designed to reduce bacterial spread. Proper maintenance and regular cleaning also make a significant difference.

Still, the question remains an interesting one for architects, building managers and healthcare professionals: should convenience, cost and sustainability outweigh potential hygiene concerns?

In high-risk environments such as hospitals and clinics, some infection-control specialists still favour paper towels for precisely this reason.

Some hand dryers cause water to drip onto radiators if the hand dryer is place over them leading to rusting. And the insides of an ultra modern hand dryer where people had to vertically insert their hands to dry them looked absolutely filthy and was clearly a breeding ground for many different types of disease. And this was in the washroom of a hospital.

So while electric hand dryers may represent progress in efficiency and sustainability, the humble paper towel might still have a place, especially when cleanliness matters most.