Heat Load Calculator

 

Heat Load Calculator
 

HEAT LOSS CALCULATOR FOR SINGLE ROOMS

IMPORTANT: This heat loss calculator is designed for estimation purposes only.Due to the many variables that may exist in building construction and materials, no responsibility is taken for inappropriately sized equipment.

| CALCULATOR | PRINT COPY |
  DATE:      
           
  CUSTOMER NAME:      
         
  ROOM NAME:      
       
                                 
    ROOM DIMENSIONS    
           
  Enter linear feet dimensions in appropriate shaded area and enter number of exposed (exterior cold)    
  walls of that length or width in appropriate shaded area.    
       
  NOTE : Walls adjoining heated areas have no heat loss.    
       
  LENGTH OF ROOM ( FT )   [ ]   [ ] < # OF EXPOSED WALLS    
  WIDTH OF ROOM ( FT )     [ ]   [ ] < # OF EXPOSED WALLS    
  HEIGHT OF ROOM ( FT )     [ ]    
                                 
           
    WALL & CEILING INSULATION VALUES    
             
  Select values by entering " Y " in appropriate column.    
             
  NOTE: If room is situated below a heated area there is no ceiling heat loss.      
 

NOTE: Fiberglass batt insulation has an R value of approx 3 per inch.

 

    
  WALL INSULATION LEVEL   CEILING INSULATION LEVEL    
  ( select one only )   ( select one only if applicable - if there is no ceiling loss leave blank )    
           
  NO INSULATION [ ]   NO INSULATION [ ]    
  R6 [ ]   R12 [ ]    
  R8 [ ]   R20 [ ]    
  R10 [ ]   R26 [ ]    
  R12 [ ]   R32 [ ]    
  R20 [ ]   R40 [ ]    
       
                                 
    DOOR AND WINDOW VALUES    
         
  Select values by entering " Y " in appropriate "type" column , sq ft area values in " size "column.    
     
  NOTE: Enter values for outside doors only ( Doors adjoining heated areas have no heat loss ).    
           
  TYPE OF DOORS   SIZE OF DOORS ( SQ. FT )    
           
  WOOD [ ]     DOOR 1 [ ]    
                   
  WOOD C/W STORM [ ]   DOOR2 [ ]    
               
  INSUL. METAL [ ]     DOOR3 [ ]    
                 
  SLIDING GLASS [ ]      
             
           
  TYPES OF WINDOWS   SIZE OF WINDOWS (SQ. FT.)    
           
  SINGLE PANE [ ]     WINDOW #1 [ ]    
                   
  DOUBLE PANE [ ]     WINDOW #2 [ ]    
                   
  TRIPLE PANE [ ]   WINDOW #3 [ ]    
  HEAT LOSS THROUGH WINDOWS =                
       
                                 
    FLOOR TYPE & INSULATION VALUE    
       
  Select values by entering " Y " in appropriate column.    
       
  NOTE: If room is above heated space there is no floor loss.    
       
  Use one type of floor construction only. If room is above heated area leave all fields blank.    
         
  CONCRETE SLAB ( ON GRADE )   BASEMENT SLAB ( BELOW GRADE )    
  c/w perimeter insulation   c/w perimeter insulation    
           
  NO INSUL. [ ]   NO INSUL. [ ]    
  R11 [ ]   R11 [ ]    
  R28 [ ]   R28 [ ]    
       
         
  FRAME FLOORS OVER UNHEATED AREA        
       
  NO INSUL. [ ]      
  R12 [ ]    
  R20 [ ]    
  R32 [ ]    
  R40 [ ]    
           
                               
      INFILTRATION VALUES & CALCULATION    
       
  Infiltration losses include losses through structure (cracks, gaps, leaks)    
  as well as losses due to opening of outside doors.    
       
  NOTE: Calculations are based on average residential values only, adjustments should be made    
  for non-standard situations such as high traffic entrances or for alternative building construction    
  materials and methods.      
       
       
       
  NOTE: Values listed are for sheltered or partially sheltered to wind exposure.    
  Use next lower value for exposed locations and second story rooms.      
       
  ( Select values by entering " Y " in appropriate column )    
       
  INFILTRATION CATEGORY   INFILTRATION GUIDELINES    
       
  POOR [ ] POOR : loose construction with no attempt to air sealing    
               
  AVERAGE [ ] AVERAGE: pre 1970 style of construction c/w air/vapour barriers,    
          no attempt to seal joints within vapour barriers    
  GOOD [ ] GOOD : as above but with specific attempts to tape and seal air/vapour    
          barriers, floor and joist headers sealed.    
  TIGHT [ ] TIGHT : R-2000 style of construction    
           
  INFILTRATION LOSSES =    
                                 
  VENTILATION LOSSES = ALTERNATE DESIGN TEMPERATURE DIFFERENCE ( D.T.D )      
       
  Note: The above calculated values are based on a design temperature difference of 72 degrees F.      
  ( based on an outside temperature of 0 degrees F and a required inside temperature of 72 degrees F )    
       
  There may be situations where this value should be adjusted accordingly.    
       
  These include 1) Rooms that are currently partially heated    
  2) Geographical locations that are either warmer or colder than a 75 degree temp difference    
  3) Situations where an inside temperature of 72 degrees is not required    
       
  Insert required design temperature difference in shaded area    
       
  D.T.D. = [   ] Degrees F          
       
       
  CALCULATED HEAT LOSS WATTS        
                  BTUHS          
 

 

FOR HARD COPY AND SUMMARY GO TO PRINT COPY TAB.

    
       
                                 

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