For product-specific approval information, please refer to the product’s specification sheet (see literature section above) or ask a Watts representative. For general information regarding any approval certification partners identified in the specification sheet, please visit our certification partners’ websites:

NAICS was developed under the auspices of the Office of Management and Budget (OMB), and adopted in 1997 to replace the Standard Industrial Classification (SIC) system. It was developed jointly by the U.S. Economic Classification Policy Committee (ECPC), Statistics Canada, and Mexico's Instituto Nacional de Estadistica y Geografia, to allow for a high level of comparability in business statistics among the North American countries.

The North American Industry Classification System (NAICS) is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.

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This official U.S. Government Web site provides the latest information on plans for NAICS revisions, as well as access to various NAICS reference files and tools. Additional information on the background and development of NAICS is available in the History section of this Web site.

Why heat and cool rooms you’re not using? Our Zone Controls automatically adjust modulating boiler temperature based on feedback from any brand of thermostats. Easy to wire, expandable to unlimited zones, and featuring RoomResponse™ technology, tekmar Zone Controls automatically adjust the temperature of your boiler based on indoor temperature, saving on energy usage and saving you money.

Why heat and cool rooms you’re not using? Our Zone Controls automatically adjust modulating boiler temperature based on feedback from any brand of thermostats. Easy to wire, expandable to unlimited zones, and featuring RoomResponse™ technology, tekmar Zone Controls automatically adjust the temperature of your boiler based on indoor temperature, saving on energy usage and saving you money.