Plans shall be filed with and approved by the Department (as an HVAC Plan Check) before any permit is issued for work listed below is started:

• Installations where the aggregate BTU/H input capacity is 500,000 BTU/H (2299.3 L/W) and over, for comfort heating, or for comfort-cooling, or for absorption units for commercial applications
• Installations where the system BTU/H input capacity is 500,000 BTU/H (2299.3 L/W) and over for comfort heating, or for comfort cooling, or for absorption units for residential applications
• Smoke-control systems
• Any comfort-cooling compressor or refrigeration compressor for any system which contains any Group B refrigerant
• Any commercial cooking hood and ventilation system
• Product conveying ventilation systems
• Engineered water heater/heating appliance vents

For more information on the Plan Check process, visit our Express Permit, Regular Plan Check and Counter Plan Check pages.