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                                               Design Temperatures

              State (City)                               Winter (Dry Bulb)                             Summer (Dry Bulb)

Colorado

   
Denver -3 F 93 F
Colorado Springs -2 F 90 F
Eagle -13 F 88 F
Grand Junction 2 F 96 F
Pueblo -1 F 97 F
Limon -6 F 90 F
California    
Los Angeles 43 F 85 F
Florida    
Miami 46 F 91 F
Minnesota    
Minneapolis -16 F 91 F
New York    
New York City 11 F 91 F
Arizona    
Phoenix 34 F 110 F
* Note  The table illustrates standard winter and summer temperatures used for designing mechanical systems in various cities

A/C Heating Capacity Estimates:

Building Type                      Ventilation CFM/ sq. ft.        Heating BTU/sq. ft.             Cooling  sq.ft./TON

 

General            
  Apartments/Condos 0.8   21   500  
  Banks 1.6   48   245  
  Bars/Taverns 4.0   114   100  
  Churches 1.2   33   340  
  Computer Rooms 4.7   20   85  
  Clinic/ Medical Centers 1.2   33   340  
  Dental Office 1.7   49   240  
  Hospitals 2.3   67   175  
  Motels 1.0   27   420  
Hotels            
  Guest Room 1.2   35   345  
  Common Area 1.7   48   235  
Office            
  High Rise Interior 1.4   41   280  
  High Rise Exterior 1.2   33   340  
  Low Rise Interior 1.3   38   300  
  Low Rise Exterior 1.1   32   365  
  Tennant Suites 1.3   38   300  
Schools            
  Elementary 1.0   30   350  
  Middle School 1.2   32   335  
  High School 1.1   32   365  
  College 1.4   40   300  
Other            
  Production/Manufacturing 1.3   38   310  
  Residence 0.7   20   600  
  Restaurant 2.0   60   200  
  Shopping Centers 1.0   28   400  
  Supermarkets 1.0   28   400  
  Theaters 1.3   38   300  
  Warehouses 0.5   18   ---  

 

* Note  The table illustrates standard ventilation, heating and cooling capacities required for various applications.   The table is based on ASHRAE standard 90:1; these are approximate guidelines and should not be used for design.

Practical  Economic Life Estimates

Equipment Type

Years
  RTU (Single Zone) 10-15
  Split Systems 10-15
  RTU  (Multizone) 10-15
  RTU (VAN) 15-20
  VAV Terminals 15-20
  CW/HW Systems 15-20
  Air Handling Systems 12-15
Air Handling Equipment  
  Electric Motors 12-15
  Fans 12-15
  Water Coils 10-12
  DX Coils 10-12
  Electric Controls 10-12
  Pneumatic Controls 15-20
  Fiberglass ductwork 15-20
  Sheet Metal Duct 20+
Refrigeration Equipment  
  Reciprocating Compressor 10-12
  Centrifugal Compressor 12-15
  Condensing Unit 12-15
  Cooling Tower (with water Tmt) 12-15
  Cooling Tower (without water Tmt) 6-10
Heating Equipment  
  Hot Water Boiler (gas) 15-20
  Furnace (gas) 10-12
  Hot Water gas (gas) 101-2

*Note - This table illustrates the practical economic life of various types of HVAC equipment