Certification Agencies

Underwriters Laboratories (UL)

Provides product certification, validation, testing, inspections, auditing, education and advisory services.

NSF International

Develops public health standards and certifications that help protect food, water, consumer products and the environment.

CSA International

Provides certification for electrical, gas-fired, and plumbing products.

American National Standards Institute (ANSI)

Provides product and personnel certification as well as greenhouse gas verification and validation.