The complete source for building, designing, and remodeling green homes

Musings of an Energy Nerd
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?
Building Science
Three Types of Heating and Cooling Loads

Manual J gives you one of them, but what do you do about the others?
Musings of an Energy Nerd
When Do I Need to Perform a Load Calculation?

Part 4 in a series of articles on sizing heating and cooling equipment
Musings of an Energy Nerd
How to Perform a Heat-Loss Calculation — Part 2

Simple ways to calculate transmission losses and exfiltration losses

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Who Can Perform My Load Calculations?