Are Hand Dryers or Paper Towels More Hygienic? Here's What the Evidence Says

Hand dryers versus paper towels has been argued in facilities management circles, healthcare settings and office boardrooms for decades and both sides have research they're happy to quote. The truth is that the answer depends on which hand dryers you're comparing, which paper towels, how they're maintained and how well people are washing their hands in the first place.

The conversation matters because hand drying isn't just a comfort step at the end of washing. It's a critical part of the hygiene process itself and the method used has a direct bearing on how well it works. This post works through the evidence, covering the science, the cost reality, the environmental picture and where the answer shifts depending on the setting.

Why the Hygiene Research on Hand Drying Is So Hard to Read

A widely cited review published in the Journal of Applied Microbiology found no clear consensus across the available studies and noted that many of the most influential publications had been sponsored by industries with a direct commercial interest in the outcome. Paper towel manufacturers and hand dryer brands alike have funded research that tends to favour their product, which makes it difficult to draw firm conclusions from individual studies alone.

What both the World Health Organisation and the Centres for Disease Control and Prevention agree on is that clean towels and properly functioning air dryers are both effective methods for drying hands after thorough washing. The quality of handwashing itself is the biggest single factor in preventing germ transfer and no drying method compensates for hands that were not properly washed in the first place. Our guide on washroom hygiene failures covers the specific points where hygiene tends to break down across the washroom journey.

What Happens to Bacteria When Hands Are Dried Properly

When hands are washed thoroughly and then dried completely, bacterial counts drop significantly with both methods. Studies that appear to show paper towels outperforming hand dryers often involve scenarios where participants have not washed their hands properly beforehand, or where older warm-air dryers are used rather than modern high-speed units. The distinction matters because older warm-air dryers perform very differently to contemporary touchless hand dryers and treating all dryer types as equivalent skews the analysis considerably.

Properly washed and completely dried hands are low-risk regardless of how they were dried. The critical point is the completeness of drying. Damp hands transfer bacteria at a far higher rate than dry ones, which is why drying time and efficiency matter so much in practice.

How Paper Towel Dispensers Create Hygiene Problems of Their Own

Research published in the American Journal of Infection Control found bacterial contaminants in unused paper towels taken directly from dispensers, before anyone had touched them. The study also found that drying hands with contaminated paper towels can increase rather than reduce bacterial counts on the skin, which is rarely acknowledged in comparisons that treat paper towels as a neutral, clean baseline.

Supply continuity adds a separate layer of risk. An empty paper towel dispenser is, by most accounts, the single biggest hygiene problem in any washroom. When towels run out, people tend to shake their hands dry, or walk away with damp hands. Neither of these outcomes support good hygiene. The wider cost and environmental case against paper towels is laid out in 7 facts about paper hand towels, alongside the figures that the industry tends not to publicise.

What HEPA Filtration Does for Hand Dryer Hygiene

One of the most significant advances in hand dryer technology over the past decade is the integration of HEPA filtration. A HEPA (High Efficiency Particulate Air) filter traps particles down to 0.3 microns, including a significant proportion of airborne bacteria and fine dust, before the air is blown onto the user’s hands. This matters because it directly addresses the concern that dryers might recirculate contaminated washroom air.

With a functioning HEPA filtration system in place, the air reaching a user’s hands has been cleaned before it arrives. This represents a meaningful hygiene improvement over earlier dryer designs and is one of the many reasons why the most current research paints a considerably more favourable picture of modern hand dryers than older studies carried out using equipment from a different era. Keeping filters well maintained is part of ensuring this benefit holds up over time. If you're unsure how often filters need replacing, our guide on hand dryer filter maintenance covers exactly what to look out for and when to act.

Why Touchless Hand Dryers Reduce Cross-Contamination Risk

Touchless hand dryers offer a practical hygiene advantage that is easy to overlook. Because they activate automatically when hands are placed beneath or inside them, users never have to touch a surface to operate the unit. In a washroom where surfaces are shared by many people throughout the day, removing even one touch point reduces the opportunities for cross-contamination, particularly in high-footfall environments.

By contrast, paper towel dispensers, particularly push-and-crank varieties, require direct contact with a shared surface. Research from the University at Buffalo found that bacteria levels on paper towel dispenser handles were six times higher than on jet dryer surfaces tested under the same conditions. Even touchless dispensers aren't without risk, since the paper supply still needs to be loaded and restocked regularly, which creates its own opportunity for contamination if it's not handled carefully. For most commercial washrooms, a hand dryer removes those variables entirely and our full hand dryer range covers options to suit every environment and level of footfall.

How Aerosol Spread Is Understood in Washroom Environments

The aerosol argument deserves a direct and honest response. Research by Kimmitt and Redway, published in the Journal of Applied Microbiology, found that jet air dryers can disperse viruses further than warm air dryers and paper towels when hands carry a high viral load.

That finding is real but... the critical context is that the test used hands contaminated with a much higher viral load than hands washed under normal conditions would carry. Properly washed hands introduce far fewer organisms into the airstream, which significantly narrows the practical gap. Aerosols are also present throughout a washroom regardless of drying method: toilet flushing, running taps and handwashing itself all generate fine particles that linger in washroom air. Ventilation quality, washroom layout and cleaning routines shape outcomes considerably more than the choice of dryer alone.

What the Environmental Evidence Says About Paper Towels Versus Hand Dryers

Sustainability is an increasingly important factor in washroom specification decisions and this is an area where hand dryers hold a clear advantage. Life cycle analysis consistently shows that paper towels generate substantially more CO2 per hand dry than modern energy-efficient hand dryers. Producing one tonne of paper towels requires the felling of around 17 trees and consumes roughly 20,000 gallons of water. Once used, paper towels cannot be recycled and go directly to landfill, where decomposing paper produces methane, a greenhouse gas considerably more potent than CO2.

Low-energy hand dryers use a fraction of the electricity of older models and produce a fraction of the emissions associated with paper towel production, distribution and disposal. For businesses with ambitious sustainability targets, the world’s first carbon neutral hand dryer range shows exactly how far that commitment can go in practice.

Which Hand Drying Method Works Best for Different Commercial Washroom Settings

For most commercial washrooms, a modern touchless hand dryer represents the more practical, cost-effective and hygienic long-term solution. Running costs are substantially lower, there is no consumables supply to manage or run out of and the absence of waste means a cleaner, tidier washroom overall. These advantages compound over time, particularly in high-use settings where paper towel costs and restocking demands quickly add up.

There are settings where paper towels remain appropriate. Healthcare environments with specific infection control protocols may specify them for particular areas. Spaces where noise is a constraint might favour them in some configurations. Any setting where hand dryer installation is not practical for structural reasons will need an alternative. For the majority of offices, leisure facilities, hospitality venues and public buildings, the evidence points toward hand dryers as the more reliable choice when properly specified and maintained. Our roundup of the best commercial hand dryers in 2026 is a good next read if you want help matching the right unit to your setting.

The hygiene comparison between hand dryers and paper towels is more nuanced than either industry tends to acknowledge. The research is mixed, often industry-funded and heavily dependent on variables like handwashing quality and dryer type. What is clear is that modern touchless hand dryers perform considerably better than older models, eliminate the supply continuity risks associated with paper towels and carry a substantially lower environmental footprint. For most commercial washrooms, they represent the more practical and sustainable long-term solution.

If you’re reviewing your washroom setup, our full range of hand dryers gives you exactly what you need to find the right unit for your footfall and environment and our team is always on hand to help with any questions

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