UL and ETL are both safety certification marks that indicate that a product has been tested and meets specific safety standards. However, they come from different organizations and have some differences in their certification processes and areas of focus.

UL (Underwriters Laboratories):
UL is a safety certification organization that tests and evaluates a wide range of products for compliance with safety standards. It is one of the most well-known and widely recognized safety certification marks in North America. UL certification ensures that a product has undergone rigorous testing and meets specific safety requirements set forth by UL’s safety standards. UL covers various product categories, including electrical equipment, electronics, appliances, lighting, industrial equipment, and more.

ETL (Intertek’s Electrical Testing Laboratories):
ETL is a safety certification mark provided by Intertek, another major testing and certification organization. Similar to UL, ETL tests and evaluates products for compliance with safety standards. It is also widely recognized in North America and other parts of the world. ETL certification ensures that a product meets the safety requirements set by Intertek for various product categories, such as electrical, electronic, and other consumer and industrial products.

Differences between UL and ETL certifications:

Certification organization: The primary difference between UL and ETL is the certifying organization. UL is issued by Underwriters Laboratories, while ETL is issued by Intertek.

Testing scope: While both UL and ETL cover a wide range of product categories, they might have slightly different areas of expertise or focus due to their testing facilities and history. Manufacturers may choose one certification over the other based on their specific needs and the expertise of the certifying organization in the relevant field.

Recognition: UL and ETL are both recognized and accepted in North America, but in some cases, UL might be more commonly requested or preferred by certain regulatory bodies or customers.

In summary, both UL and ETL are reputable safety certification marks, and either one indicates that a product has been tested and meets specific safety standards. Manufacturers often choose between UL and ETL based on their specific needs and regional market preferences.