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ACCA Certified · Permit-Ready · Nationwide

Heat Load USA Load Calculation Manual J

Useful industry links.

The references our designers actually use.

ACCA

Air Conditioning Contractors of America

EPA ENERGY STAR

Energy efficiency programs & certification

REScheck

Residential energy compliance tool

AHRI Directory

Equipment ratings directory

ASHRAE

Industry standards & ventilation guidelines

IECC

International Energy Conservation Code

COMcheck

Commercial energy compliance tool

DOE Building Energy Codes

Federal energy code program

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