Load Calculation
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How to Read Manual J Reports
If you know what to look for, it’s easy to check for accuracy
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There’s More to HVAC Design Than Sizing
Yes, size matters for for designing and sizing an HVAC system, but how the conditioned air is distributed matters more
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Converting Heating and Cooling Loads to Air Flow Needs
Here’s how Manual J software takes your inputs and gives you both the BTU/hour and cfm needed for each room
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Who Can Perform My Load Calculations?
Most HVAC contractors don’t know how to do heating load and cooling load calculations — so what’s a homeowner to do?
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Manual J Doesn’t Tell You Equipment Capacity
The amount of heating and cooling your house needs isn’t the only factor in determining the size of your heating and cooling equipment
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Manual J Load Calculations vs. Rules of Thumb
This sample of Manual J results shows that the old way really needs to die
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The 7 Biggest Opportunities for HVAC Contractors
Forget about being the low bidder — it’s time to focus on combustion safety, ducting, ventilation, load calculations, home performance issues, and house-as-a-system thinking
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Manual J and HVAC Design
Design temperatures, load calculations, and oversized HVAC systems
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When Do I Need to Perform a Load Calculation?
Part 4 in a series of articles on sizing heating and cooling equipment
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Calculating Cooling Loads
Part 3 in a series of articles on sizing heating and air conditioning equipment
