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Musings of an Energy Nerd
The Manual J Dilemma

It’s hard to get a contractor to provide an accurate heat-loss or heat-gain calculation
Green Building News
A New Online HVAC Calculator Is Available

Elite Software says its software works on smartphones, tablets, and internet-connected computers
Building Science
A 3-Ton Air Conditioner Will Rarely Give You 3 Tons of Cooling

Even when a cooling system is perfectly designed and installed, three factors can reduce an air conditioner's capacity

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The Manual J Dilemma