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Sinn �nnd Select in.ga.Li'febreath HRV or ERV
Step 1:Follow.these general guidelines to determine the.best HRV or ERV for your application
., . .Option 1:Size your Residential unit by Air Exchange(ac/hr)Method
'.Step 1 Step 2
2400sqft(L x W)with 9' (H) ceiling ac/hr=(Total Cubic Volume x.35)/60
E Cubic volume=(L x W x H) or(2400 x 9)x.35/60min= 126cfm
*In all cases"local and all other codes requirements must be followed
Option 2:Size you Residential unit using ASHRAE 62.2(Minimum requirement)
Residential . . Ventilation Air Requirements(CFM/Bedrooms)
Sizing AS-RAEQ2TABLE 4.1a
1 2 (--,-,„ 4 5
Floor Area Sq.ft.
<500 30 . 38 45 = 53 - 60
•
501-1000 45 53 60 68 75
1001-1500 60 68 ' 75 83 90
1501-2000 75 83 90 98 105
2001-2500 90 98 =� 105 113 120
2501-3000 105 113r \.129/) _ 128 135
1-3500 120 128 135 143 150
3501-4000 135 143 150 158 165
4001-5000 150 159 165 173 180
5000-5001 165 173 180 188 195
*In all cases local and all other codes requirements must be followed
Size your Commercial unit—Note it's recommended a mechanical engineer always be consulted.
Application Occupant CFM/Person CFM/SQFT Comments
Density/1000sgft
Retail Stores 15 10
, > Classroom 25-35 15 Varies with age
Offices 5 10
Conference Rooms 50 15
Hair/Nail Salons 25 20 Do not Undersize
Pet Shops 1
Physical Therapy : 20 15
• Bars/Lounges 100 10 Non-Smoking
Health Clubs 40 20 Only 10/1000 in weight room
*Swimming Pools 1-10 Varies greatly with temperature
Places of Religion 120 5