Columbia Tray/Tunnel Dehydrator
Columbia Tray Dryer   McKenzie Tray Dryer   Columbia Tray Dryer

Columbia Tunnel Dryer Overview

The Columbia is the full-sized production tray dryer, capable of large scale dehydration while maintaining consistency and uniformity. The Columbia has proven to be very flexible, drying a wide range of products, and it can be customized to a unique and demanding application. For both high production and high quality, look to the Columbia for your commercial and industrial dehydration needs.



  • UL EPH approved for food sanitation safety
  • UL panel and gas train
  • Double-walled, insulated stainless or carbon steel construction.
  • It uses a 30 HP single 72-inch (182.88 cm) fan for high air velocity. This produces approximately 71,000 CFM (2010.50 CMM).                 Can be upgraded to 20 HP twin 60-inch (152.4 cm) fans producing 106,000 CFM (3001.58 CMM).
  • Indoor or outdoor installation.
  • Requires duct work to exhaust air out of the building and bring fresh air in.
  • AHCS (Automated Humidity Control System) — standard feature on dryer for operational cost savings.
  • Maximum operating temperature to 220°F/104°C
fColumbia Tray Dryer


  • 3.5 million BTU standard burner that uses natural gas, butane or propane for its fuel source. 5 million BTU burner available as an upgrade.
  • Thermostatic Temperature Control (from ambient to 220°F/104°C).
  • Powerful fixed speed fan (variable speed available).
  • Adjustable fresh air inlet (humidity control)
  • Direct fired gas burner (natural gas or propane)
  • Steel Tube Construction

Dryer Dimensions

  • Height: 16-feet, 6-inches  (5.03 m) Installed
  • Width: 13-feet, 7-inches (4.14 m )
  • Length: 43-feet, 8-inches (13.31 m)

Columbia Operation Costs

Dryer Fan Motor HP Heat Type, Max load Average Electrical Load (Fan) Average Heat Load Average Hourly Cost Fan/Heat
Columbia 30 HP Gas Burner, 3.5 million BTU's 29.32 kw/hr 1.4 million BTU's 14 Therms x $1.45 = $20.30
10.26 kw/hr x $0.12 = $1.23
Total Average Cost = $21.53

*Notes: All heating loads were computed based on a 40% consumption rate. This is an average figure, and may not accurately represent all applications. Energy costs will vary per Therm and Kilowatt. Check rates for your area.
  • Telfon Liners
  • Digital Thermometer
  • Choice of Data logger or Chart Recorder
  • Tray Cart
  • Extra set of trays (solid or perforated)