Hand air dryers are widely used in washrooms to dry hands after washing, as an alternative to paper or linen hand towels. They use an electric blower to produce one or more jets of air that are used to dry hands placed under, or into, the hand air dryer unit. Some models heat the air jets prior to use with electrical heating elements or by passing it over the electric motor that drives the blower.
Hand air dryers are available with a wide range of efficiencies. The Energy Technology List (ETL) Scheme aims to encourage the purchase of high speed hand air dryer products with the highest efficiency.
To be eligible for inclusion on the ETL, products shall meet the requirements as set out below.
High speed hand air dryers are products that are specifically designed to dry human hands by moving air past the hands in a manner that removes water from the hands by physical displacement and/or evaporation.
1.3.1 Eligibility requirements
To be eligible, products must:
- Incorporate an electrically driven blower that produces one or more jets of high speed air that can be used to dry human hands that are placed beneath, or into, the product.
- Automatically switch off power to the blower and air heater (where fitted) when hands are removed from the product’s drying zone.
- Not incorporate facilities to wash or apply soap to hands, or to dispense towels.
- Have an appropriate Conformity Assessment mark.
1.3.2 Performance requirements
Eligible products must:
- Use not more than (<=) 5.5kWh of electricity per 1,000 standard drying cycles in its normal mode of operation.
- Have a standard drying time that is less than, or equal to, 15 (+/- 0.5) seconds
For the avoidance of doubt, test data should be presented to one decimal place. As an example, a product that uses 5.6kWh per 1,000 standard drying cycles would be deemed to be a fail.
1.4 Measurement and Calculations
1.4.1 Measurement standards
The product’s standard drying time and electricity consumed per standard drying cycle must be determined in accordance with the method and test conditions set out in:
- ETL Method for Testing of High Speed Hand Dryers1.
1.5 Verification for ETL Listing
Any of the following testing routes may be used to demonstrate the conformity of products against the requirements:
- In-house testing – Self-certified
- In-house testing – Self-tested and verified or cross-checked by an independent body
- Witnessed testing
- Independent testing
Further information regarding the routes can be found in Guidance Note 5 on the ETL product testing framework2.
1.6 Conformity testing
Products listed on the ETL may be subject to the scheme’s conformity testing programme in order to ensure listed models continue to meet the ETL requirements.