CSA 446 & ISO 13256 Ratings 

Performance Rating CSA C446-94 (R-22)
               
  OPEN COOLING CLOSED COOLING OPEN HEATING CLOSED HEATING
  Capacity EER Capacity  EER Capacity  COP Capacity COP
3 TON O-45         40,000 3.6    
  R-45 44,000 18 40,800 15.7 37,400 3.3 27,500 3.1
  TF-45 43,000 16.6 39,900 13.7 40,700 3.2 32,400 3.2
  W-45 37,500 20.7 34,500 15.2 39,700 4 32,200 3.3
                   
4 TON O-55         51,500 3.4    
  R-55 59,100 15.9 47,900 13 50,300 3.5 39,200 3.3
  TF-55 54,300 15.2 48,800 12.6 51,000 3.4 39,700 3.2
  W-55 44,200 18.7 42,500 14.9 49,400 4 39,900 3.3
                   
5 TON O-65         64,000 3.5    
  R-65 69,200 15.4 60,000 11.6 64,000 3.4 50,900 3.3
  TF-65 64,300 14.2 60,400 11.8 62,800 3.3 48,400 3.1
  W-65 58,800 15.2 50,800 13.1 63,300 3.6 50,200 3
                   
6 TON O-75         73,000 3.4    
  R-75 73,900 14.2 65,100 11.5 67,800 3.1 50,600 3
  TF-75 70,600 13.6 66,900 11.7 71,100 3.1 55,100 3
  W-75 68,200 15.4 59,400 12.8 68,700 3.1 54,200 2.9
CSA    C13256-1 C-13256-2 (R-22)    
  OPEN COOLING CLOSED COOLING OPEN HEATING CLOSED HEATING
  Capacity COP Capacity  COP Capacity  COP Capacity COP
                 
3 TON O-45         41,980 4.5    
  R-45 44,028 6.95 41,639 5.4 39,591 4.25 30,751 3.65
Air TF-45 45,052 6.9 41,980 5.25 39,932 4.25 29,488 3.6
Water  TF-45         38,226 3.7 30,376 3.02
  W-45 39,250 6.05 36,178 4.49 40,615 3.97 30,376 3.13
                   
4 TON O-55         53,243 4.25    
  R-55 56,656 5.9 53,584 4.7 51,195 4.05 37,202 3.45
Air TF-55 53,584 5.9 50,171 4.7 50,512 4.2 39,591 3.5
Water  TF-55         49,147 3.63 37,884 2.84
  W-55 44,369 5.48 42,663 4.37 49,489 3.97 39,932 3.3
                   
5 TON O-65         64,506 3.9    
  R-65 70,990 5.35 65,530 4.2 66,212 4 51,195 3.4
Air TF-65 65,188 5.25 59,045 4 62,458 4 50,171 3.5
Water  TF-65         61,434 3.41 48,806 2.8
  W-65 53,584 5.01 50,854 3.85 63,141 3.6 50,171 3.01
                   
6 TON O-75         73,380 3.7    
  R-75 74,403 4.75 69,967 3.8 70,649 3.8 55,632 3.4
Air TF-75 76,451 4.8 70,308 3.75 71,332 3.8    
Water  TF-75                
  W-75 64,847 4.95 60,410 3.84 69,625 3.57 52,902 2.88
CSA C13256-1  C-13256-2 (R410a) Part Load
               
  OPEN COOLING CLOSED COOLING OPEN HEATING CLOSED HEATING  
  Capacity COP Capacity  COP Capacity  COP Capacity COP
                   
3 TON O-45                
  R-45            
  TF-45                
  W-45                
                   
4 TON O-55                
  R-55 45,393 8.45 42,663 7.1 38,567 4.8 33,140 4.2
  TF-55                
  W-55                
                   
5 TON O-65                
  R-65 50,854 7.6 47,782 6.35 45,393 4.85 39,591 4.3
  TF-65                
  W-65                
                   
6 TON O-75                
  R-75                
  TF-75                
  W-75                
Full Capacity
               
  OPEN COOLING CLOSED COOLING OPEN HEATING CLOSED HEATING  
  Capacity COP Capacity  COP Capacity  COP Capacity COP
                 
3 TON O-45                
  R-45                
  TF-45                
  W-45                
                   
4 TON O-55                
  R-55 58,362 6.5 51,878 5.1 49,830 4.35 39,591 3.75
  TF-55                
  W-55                
                   
5 TON O-65                
  R-65 67,236 5.7 60,069 4.4 48,123 3.85 61,093 4.35
  TF-65                
  W-65                
                   
6 TON O-75                
  R-75                
  TF-75                
  W-75