PHIUS+ 2018
Space Conditioning Criteria Calculator v2
CALCULATOR method should be used for certification and is based on Envelope-to-Floor Area ratio.
ESTIMATOR method approximates Envelope-to-Floor Area ratio based on Floor Area alone. 
  or enter here:      
  Total Occupancy or enter here:      
*Estimator method is used to approximate for early design, not for final certification targets. 
  or enter here:      
  or enter here:      
*Calculator method is used for official certification targets. 
Space Conditioning Criteria
Annual Heating Demand 
Annual Cooling Demand
Peak Heating Load
Peak Cooling Load
Typed entry will override sliding scale. 
The results of the CALCULATOR method take precedence over the ESTIMATOR method.