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Rule 1121 - Control of Nitrogen Oxides from Residential-Type, Natural Gas-Fired Water Heaters

Click below for a list of products certified by the South Coast AQMD as compliant with the requirements of Rule 1121 (PDF):

Residential-Type, Natural Gas-Fired Water Heaters (PDF)

Note: The South Coast AQMD does not endorse or warrant any specific product or manufacturer.

 

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South Coast Air Quality Management District

21865 Copley Dr, Diamond Bar, CA 91765

909-396-2000

 

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