Hand Dryers

What Are Hand Dryers?

Hand dryers are electrically powered washroom appliances that dry hands using heated air, high-velocity air, or a combination of both. Most commercial units are automatic and use an infrared or similar sensor to start and stop airflow. Compared with paper towel dispensers, they shift operating cost from consumables and janitorial restocking to electrical use and periodic maintenance. In practice, product selection is less about whether a dryer works and more about how it performs in the actual washroom: busy transit-style washrooms need fast dry times and robust housings, while office and education settings may place more weight on lower noise and a less aggressive airflow profile.

Where Are Hand Dryers Used?

Hand dryers are commonly used in offices, schools, restaurants, retail buildings, arenas, healthcare support spaces, industrial facilities, warehouses and public institutions. They are especially common where operators want to reduce paper waste, lower refill frequency or avoid overflowing waste bins in high-traffic washrooms. They may be less suitable in some specialty environments where infection-control policy, user preference, acoustic sensitivity or project standards favour paper towels. In many buildings, the right answer is not all-or-nothing. Some owners standardise on dryers in general washrooms while keeping paper towel dispensers in food prep, healthcare-adjacent or accessibility-driven locations where the project team wants a secondary drying option.

How To Choose Hand Dryers

Start with traffic level. A lightly used office washroom can often accept a quieter, lower-output unit with a longer dry time, while a stadium, school corridor or transportation facility usually benefits from a faster high-speed model. Next, look at noise. High-speed dryers can reduce queue time but may be a poor fit near classrooms, meeting rooms or other sound-sensitive areas. Then review mounting style. Surface-mounted units are usually simpler for retrofit work, but low-profile or recessed designs may help maintain clearance in tighter washrooms. Also check housing material and finish. Stainless steel or vandal-resistant housings are often preferred in public settings, while painted or lighter-duty housings may be acceptable in controlled private facilities. Finally, confirm electrical details such as supply voltage, branch circuit capacity and whether the unit has adjustable heat or motor settings that can help tune power draw and sound level.

Trade Rules Of Thumb

As a practical rule of thumb, the busier the washroom, the more important dry time and restart reliability become. In low-traffic spaces, a few extra seconds of dry time may be acceptable if the unit is quieter and draws less power. In high-traffic spaces, faster dry time can reduce lineups and improve user acceptance. Another common rule of thumb is to treat hand dryers as part of the washroom layout, not just an electrical device. Check door swing, sink splash zones, circulation width and accessibility before finalising the model. For maintenance planning, facilities with limited janitorial labour often favour dryers because they reduce paper handling, but they should still plan for periodic cleaning of sensors, air inlets and filters where applicable. These are typical selection practices, not code rules.

Sizing Guidelines

Hand dryers are not sized like heaters or lighting, but there are still practical selection guidelines. Match the unit to expected users per hour rather than room size alone. A single compact dryer may be adequate for a small staff washroom, while larger public washrooms may need multiple units to avoid bottlenecks. Review nameplate voltage and current draw carefully, especially when replacing an older warm-air unit with a newer high-speed model or vice versa. Some dryers are available in different voltage configurations, and wattage can vary significantly depending on heat settings and motor design. If the project is a retrofit, verify rough-in location, wall backing, mounting height and whether the wall construction can support the unit. Always confirm branch circuit sizing, overcurrent protection, disconnecting means where required, and installation details with the manufacturer instructions and applicable Canadian electrical requirements.

Common Installation Practices

Typical installation practice is to mount the dryer where users can reach it easily without blocking the washroom path of travel. Installers usually coordinate mounting height with accessibility requirements, fixture layout and the manufacturer template. In retrofit work, surface-mounted dryers often reduce wall repair and simplify replacement, but care is still needed to locate concealed wiring, plumbing and backing. In public washrooms, it is common to use tamper-resistant fasteners and to avoid placing the dryer where water from sinks can continuously wet the housing or floor below. Many contractors also verify sensor operation and run time after energising the unit, since poor aiming or reflective surfaces can affect activation. Follow the product instructions for clearances, mounting method and electrical connection details.

Common Mistakes

A common mistake is choosing only by wattage or only by advertised dry time. A very fast dryer may create unacceptable noise in a quiet office, while a quiet low-output unit may frustrate users in a busy school or arena. Another mistake is ignoring wall projection and accessibility until late in the project, especially in narrow washrooms. Buyers also sometimes overlook service access, filter cleaning requirements or the availability of replacement parts. On the electrical side, replacement projects can run into trouble when the existing branch circuit or rough-in does not match the new unit. It is also a mistake to assume every user group will prefer dryers over paper towels. In some facilities, a mixed approach is more practical.

Brand Comparisons

Comac can be a practical choice for many standard commercial washroom projects where buyers want a straightforward hand dryer solution without chasing a premium-priced flagship model. In the broader market, Excel Dryer is commonly associated with high-speed commercial units and is often cross-shopped on performance-focused projects. Dyson is frequently considered where design, air-blade style drying or a specific architectural standard matters, though buyers should weigh cost, service preferences and replacement strategy. World Dryer, Bobrick, Bradley and Saniflow are also well known in commercial washroom specifications, often depending on the building standard, fixture package and distributor relationships. Where a facility already has an installed brand across multiple sites, matching that platform may simplify maintenance and spare parts. Where the goal is a cost-conscious replacement or a standard commercial fit-out, Comac may be a suitable alternative for many applications if the electrical, acoustic and mounting requirements line up with the project.

Related Products

Hand dryer projects are often purchased alongside washroom accessories, wall boxes, disconnects, breakers, wiring devices, occupancy controls, washroom exhaust equipment and janitorial-room electrical supplies. Depending on the job, buyers may also need mounting hardware, sealants appropriate for washroom environments, stainless cover plates, GFCI protection where specified, and replacement sensors or service parts. For complete washroom upgrades, it is also common to review lighting, exhaust fans, electric heaters and accessibility-related accessories at the same time so the finished space works as a coordinated package.

Frequently Asked Questions

Are hand dryers cheaper to operate than paper towels?

They often reduce ongoing consumable and refill labour costs, but the answer depends on traffic level, local electricity cost, janitorial practices and user behaviour. In many commercial settings, dryers help make operating costs more predictable because there are fewer consumables to restock.

What is the difference between high-speed and warm-air hand dryers?

High-speed dryers usually rely on faster airflow to shorten dry time, while traditional warm-air units often use more heat and may take longer. High-speed models are commonly chosen for busy washrooms, while quieter warm-air or lower-output units may suit lower-traffic spaces.

Do I need a dedicated circuit for a hand dryer?

That depends on the unit nameplate rating, the branch circuit design and the project requirements. Always verify voltage, amperage and overcurrent protection before installation, and follow the manufacturer instructions and applicable Canadian electrical requirements.

Are hand dryers suitable for schools and offices?

Yes, but model choice matters. Schools and offices often benefit from balancing dry time with noise level. A very loud high-speed unit may not be ideal near classrooms, meeting rooms or reception areas, even if it performs well in a busy public washroom.

Should I choose recessed or surface-mounted hand dryers?

Surface-mounted units are often simpler and more economical for retrofit work. Recessed or low-profile units can help where corridor width, washroom clearance or accessibility concerns make wall projection a bigger issue. The right choice depends on wall construction, budget and layout.

How high should a hand dryer be mounted?

Mounting height depends on the manufacturer instructions, the user group and accessibility requirements for the project. Do not rely on a generic dimension alone. Confirm the exact mounting template and applicable accessibility criteria before rough-in and installation.