Inputs on this screen are used for the Design Heating and Cooling Load report. Edit the values for the primary and secondary heating and cooling system types that are used in the Base Building or evaluated improvements.

Forced Air Distribution:

  • Furnace Heating Temperature Drop: design temperature difference between supply and return air temperature. The value is used for duct sizing.
  • Heat Pump Heating Temperature Drop: design temperature difference between supply and return air temperature used for heat pump distribution system sizing.
  • Cooling Temperature Drop: design temperature difference between supply and return air temperature used for sizing of cooling ductwork.

Electric Distribution:

  • Baseboard Capacity Watt/ft.:  baseboard capacity per manufactures specifications used to determine the length of baseboard required to meet the space heating load.

Hydronic Distribution:

  • Boiler Temperature Drop: design temperature difference between supply and return water. The value is used for pipe sizing.
  • Baseboard Capacity Btu/hr/ft: baseboard capacity per manufacture specifications used to determine the length of baseboard required to meet the space heating load.

Safety Factors:

  • Heating Safety Factor: the value is used to obtain the required heating equipment output capacity as noted on the Design Heating and Cooling Load report.
  • Cooling Safety Factor: the value is used to obtain the required cooling equipment output capacity as noted on Design Heating and Cooling Load report.
  • Distribution Safety Factor: specify the safety factor in percent. The value is applied to space distribution CFM/GPM as noted on Design Heating and Cooling Load report.

TREAT load sizing has been compared to Manual J. Heating and cooling loads calculated by TREAT proved to be slightly more conservative. Please use professional judgment in applying the results to sizing heating and cooling systems.