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The following sections provide details about the HVAC products used during energy analysis for each HVAC system.

2-Pipe Fan Coil System, Chiller 5.96 COP, Boilers 84.5 eff

  • Water cooled centrifugal chiller (COP 5.96)
  • Open, atmospheric pressure cooling tower with variable speed fan and 5-degree Fahrenheit (2.8 degree Celsius) approach
  • Forward curved constant volume fan and premium efficiency motor
  • 0.25 inch of water gauge (62.3 pascals) static pressure Constant Volume duct system
  • Gas-fired hot water boiler with draft fan >2500 kBtuh, 84.5% combustion efficiency
  • Variable volume hot water pump
  • Hot water coil
  • Variable volume chilled water pump
  • Chilled water coil
  • Variable volume condenser water pump
  • Domestic hot water unit (0.575 Energy Factor)

4-Pipe Fan Coil System, Chiller 5.96 COP, Boilers 84.5 eff

  • Water cooled centrifugal chiller (COP 5.96)
  • Open, atmospheric pressure cooling tower with variable speed fan and 5-degree Fahrenheit (2.8-degree Celsius) approach
  • Forward curved constant volume fan and premium efficiency motor
  • 0.25 inch of water gauge (62.3 pascals) static pressure Constant Volume duct system
  • Gas-fired hot water boiler with draft fan >2500 kBtuh, 84.5% combustion efficiency
  • Variable volume hot water pump
  • Hot water coil
  • Variable volume chilled water pump
  • Chilled water coil
  • Variable volume condenser water pump
  • Domestic hot water unit (0.575 Energy Factor)

11 EER Packaged VAV, 84.5% boiler heating

  • Efficient 11 EER, >20-ton Packaged Variable Air Volume (VAV) Unit, Water Reheat, with Variable Speed Drive (VSD)
  • Forward curved fan with VSD and premium efficiency motor
  • 3.5 inch of water gauge (871.8 pascals) static pressure VAV duct system
  • Integrated differential dry-bulb temperature economizer
  • Gas-fired hot water boiler with draft fan >2500 kBtuh, 84.5% AFUE
  • Constant volume hot water pump
  • Hot water coil
  • Hot water reheat boxes
  • Domestic hot water unit (0.575 Energy Factor)

12 SEER/0.9 AFUE Split/Packaged Gas, 5-11 Ton

  • Efficient 12 SEER, 90% AFUE furnace split system with gas heat
  • Forward curved constant volume fan and premium efficiency motor
  • 2.0 inch of water gauge (498 pascals) static pressure Constant Volume duct system
  • Integrated differential dry-bulb temperature economizer
  • Domestic hot water unit (0.575 Energy Factor)

12 SEER/7.7 HSPF Split Packaged Heat Pump

  • Efficient 12 SEER/7.7 HSPF (Heating Seasonal Performance Factor) < 11.25-ton split/packaged heat pump system
  • Forward curved constant volume fan and premium efficiency motor
  • 2.0 inch of water gauge (498 pascals) static pressure Constant Volume duct system
  • Integrated differential dry-bulb temperature economizer
  • Domestic hot water unit (0.575 Energy Factor)

12 SEER/8.3 HSPF Packaged Terminal Heat Pump (PTHP)

  • 12 SEER/8.3 HSPF (Heating Seasonal Performance Factor) packaged terminal heat pump (PTHP)
  • Forward curved constant volume fan and premium efficiency motor
  • 0.25 inch of water gauge (62.3 pascals) static pressure Constant Volume duct system
  • Domestic hot water unit (0.575 Energy Factor)

Central VAV, Electric Resistance Heat, Chiller 5.96 COP

  • Water cooled centrifugal chiller (COP 5.96)
  • Open, atmospheric pressure cooling tower with variable speed fan and 5-degree Fahrenheit (2.8-degree Celsius) approach
  • Forward curved fan with Variable Speed Drive (VSD) and premium efficiency motor
  • 3.5 inch of water gauge (871.8 pascals) static pressure Variable Air Volume (VAV) duct system
  • Integrated differential dry-bulb temperature economizer
  • Resistance reheat boxes
  • Variable volume chilled water pump
  • Chilled water coil
  • Variable volume condenser water pump
  • Domestic hot water unit (0.575 Energy Factor)

Central VAV, HW Heat, Chiller 5.96 COP, Boilers 84.5 eff (default)

  • Water cooled centrifugal chiller (COP 5.96)
  • Open, atmospheric pressure cooling tower with variable speed fan and 5-degree Fahrenheit (2.8-degree Celsius) approach
  • Forward curved fan with Variable Speed Drive (VSD) and premium efficiency motor
  • 3.5 inch of water gauge (871.8 pascals) static pressure Variable Air Volume (VAV) duct system
  • Integrated differential dry-bulb temperature economizer
  • Gas-fired hot water boiler with draft fan >2500 kBtuh, 84.5% combustion efficiency
  • Variable volume hot water pump
  • Hot water coil
  • Hot water reheat boxes
  • Variable volume chilled water pump
  • Chilled water coil
  • Variable volume condenser water pump
  • Domestic hot water unit (0.575 Energy Factor)

Residential 14 SEER/0.9 AFUE Split/Packaged Gas <5.5 ton

  • Efficient 14 SEER/90% AFUE furnace <5.5-ton split/packaged system with gas heat
  • Residential constant volume cycling fan
  • 2.0 inch of water gauge (498 pascals) static pressure Constant Volume duct system
  • Domestic hot water unit (0.575 Energy Factor)

Residential 14 SEER/8.3 HSPF Split/Packaged Heat Pump

  • Efficient 14 SEER/8.3 HSPF (Heating Seasonal Performance Factor) <5.5-ton split/packaged heat pump system
  • Residential constant volume cycling fan
  • 2.0 inch of water gauge (498 pascals) static pressure Constant Volume duct system
  • Integrated differential dry-bulb temperature economizer
  • Domestic hot water unit (0.575 Energy Factor)

Residential 17 SEER/9.6 HSPF Split HP <5.5 ton

  • 17.4 SEER/9.6 HSPF <5.5-ton split/packaged air source heat pump, intermittent fan mode
  • Residential constant volume cycling fan
  • 2.0 inch of water gauge (498 pascals) static pressure Constant Volume duct system
  • Premium efficiency, on-demand tankless domestic hot water heater (0.85 Energy Factor)

Underflow Air Distribution

  • Packaged Variable Air Volume (PVAV) system with under floor air distribution
  • Forward curved fan with Variable Speed Drive (VSD) and premium efficiency motor
  • 3.5 inch of water gauge (871.8 pascals) static pressure VAV duct system
  • Gas-fired hot water boiler with draft fan >2500 kBtuh, 84.5% combustion efficiency
  • Integrated differential dry-bulb temperature economizer
  • Variable volume hot water pump
  • Hot water coil
  • Hot water reheat boxes
  • Improved efficiency domestic hot water heater (85% thermal efficiency)