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  1. HVAC
    I have done my Manual J calculations for an HVAC overhaul in my century home. I have started looking at Manual S and Manual D for equipment and duct sizing. At what point does "zoning" enter the situation? I would like the equipment to be zoned (Zone 1 = basement & 1st floor...Zone 2 = 2nd...
  2. HVAC
    I'm doing a Manual J calculation (using version 7) for a two-story, with a finished basement, house. For the number of occupants (for sensible and latent heat gain), the example in the Manual J book specifies using one more person than the number of bedrooms in the house. But, my question...
  3. HVAC
    Hi, I'm a homeowner that likes to crunch numbers. As part of a larger renovation I'm evaluating the existing ducts to determine what, if anything, should be changed. I got ahold of Manual J and used it to calculate heat loss and infiltration for all the rooms in my house. But now I'd like to...
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