HESF 1000 Central Heating Unit
  • Heat Source: Low-pressure steam
  • Input: 1,000,000 Btu/h
  • Heat Area: 40,000 ft²
  • Thaw Area: 18,000 ft²
  • Cure Area: 48,000 ft²
  • Weight: 405 lbs
  • Dimensions: 47″ l x 28″ w x 75″ h

HESF 1000 Central Heating Unit


Steam-to-fluid plate heat exchanger utilizing steam as the heat source


  • The system transfers heat from “on-site” steam to a circuit of heat-transfer-fluid that enables the use of any of the DryAir accessories for heat distribution.
  • Automatic temperature control allows the user to set the desired supply-fluid temperature. Temperature is maintained by modulating the flow of steam through the exchanger.
  • One unit will provide enough heating capacity to heat up to 50,000 square feet! (dependent on the steam source capacity)
  • Using an existing steam source could prove to be the most versatile and economical approach to delivering temporary heat on a construction site / building renovation.


  • Steam Requirements
    • For use with low pressure steam (15 psi or less)
    • Steam supply and condensate return pipe connections to unit are 1½” FNPT
    • Condensate trap is an integral part of the unit
    • Must be connected to the site supply by a licensed steam-fitter/pipe-fitter
    • Steam pressure reducing valves not included
  • Fluid Distribution
    • 2nd circuit – heat transfer fluid circuit
    • 2″ hose and Kamlock connections
    • Reservoir On-board “open-vented” glycol reservoir
    • External connection for an optional external extended reservoir
    • A selector valve is used to select either the on-board reservoir or the external reservoir
    • Pump
    • 2HP, 28SFLA, 13FLA
    • 50 – 75 US GPM
  • Electrical
    • System requirements – 230V, 1 Ph, 60Hz, 30A
    • Control circuitry – 24V
  • Heat Exchanger
    • Copper-brazed stainless steel plates
    • Heat exchange **1000 kBtu/h
      **with 1,036 lb/h of steam and 50 US GPM of fluid flow
  • Optional
    • Extended Reservoir package – Cart type