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Certification marks for the U.S.

For the U.S.: A CSA mark with the indicator "US" or "NRTL" means that the product is certified for the U.S. market to the applicable U.S. standards. If a product has features from more than one area, (e.g.. electrical equipment with fuel burning features), the mark indicates compliance to all applicable Standards.

For the U.S. and Canada: A CSA mark with the indicators "C" and "US" or "NRTL/C" means that the product is certified for both the U.S. and Canadian markets, to the applicable U.S. and Canadian standards. If a product has features from more than one area, (e.g.. electrical equipment with fuel burning features), the mark indicates compliance to all applicable Standards.

For gas products in the U.S.: The CSA Blue Star indicates the product is certified to applicable U.S. standards for appliances using gas or other petroleum fuel. For details, see the Gas Appliances Certification Program. If a gas product has electrical features, the Mark also indicates compliance to the applicable electrical Standard(s).

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ANSI 2” means that the product is certified for the U.S. market to the requirements of the NSF/ANSI 2 standard.

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ANSI 4” means that the product is certified for the U.S. market to the requirements of the NSF/ANSI 4 standard.

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ANSI 7” means that the product is certified for the U.S. market to the requirements of the NSF/ANSI 7 standard.

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ANSI 8” means that the product is certified for the U.S. market to the requirements of the NSF/ANSI 8 standard.

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ANSI 18” means that the product is certified for the U.S. market to the requirements of the NSF/ANSI 18 standard.

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ANSI 51” means that the product is certified for the U.S. market to the requirements of the NSF/ANSI 51 standard.

For the U.S.: A CSA mark with the indicator “SANITATION NSF/ ANSI 169 ” means that the product is certified for the U.S. market to the requirements of the NSF/ ANSI 169 standard.

For limited-run products and site-specific installations, see the U.S. Field Evaluation label.