Manual J
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How to Cheat on a Manual J Load Calculation
Overblown heating and cooling loads lead to oversized HVAC systems and equipment
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The Impact of Air Leaks on Heating and Cooling Loads
A look into how Manual J calculates air infiltration and the ways that information affects the sizing of HVAC equipment
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Planning a Furnace-to-Ducted Heat Pump Retrofit, Part 3: Sizing Calculations
A comprehensive explanation of how to perform aggressive Manual J calculations to ensure properly sized HVAC equipment
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The Value and Limits of Manual J
These basic energy models can teach us more about our plans than what heating and cooling loads to expect
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Understanding Manual J Occupant Loads
How many people? Where and when do they get counted? How much do they contribute?
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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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Proper Sizing Isn’t the Real Reason for HVAC Design
Yes, size matters, but another factor 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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The Difficulties of Third-Party HVAC Design
How do we get everyone on the same page?
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A New Online HVAC Calculator Is Available
Elite Software says its software works on smartphones, tablets, and internet-connected computers