💨 Bi-Directional Heated Relief Ports (20W), Rapid Defrost Room Vacuum Prevention

Cold Storage Pressure Relief Port Calculator

Size bi-directional heated pressure relief vent ports (Kason / Jamison) on commercial walk-in freezers and cold storage warehouses: calculate air volume contraction rate during rapid post-defrost cooldown (preventing severe room vacuum that caves in insulated ceiling panels or blows out wall seals), heater element wattage, and installation margins.

1. Project & Operating Inputs

Cold Storage Freezers Equipped (Freezer Count e.g. 12 Freezers)

Freezer Volume (Cubic Feet e.g. 6,500 Cu Ft Freezer Box)

Customer Bid Price for Supplied & Installed Heated Ports ($ / Unit)

Heated Dual-Acting Vent Port, Core Drill, Electrical Whip & Labor ($ / Unit)

2. Financial Breakdown & Yield

HEATED VACUUM RELIEF PORTS

Turnkey Relief Port Package Profit

Cold Storage Contractor Margin

0.0%

Gross Revenue / Bill

Total Project CapEx

Operating / Material Cost