Manual J

CoolCalc Manual J is a web based, ACCA approved MJ8 heating and cooling load calculator that allows you to do accurate load calculations in less time and with less hassle than traditional load calculation software or spreadsheets.

CoolCalc Manual J utilizes the latest in cloud technologies and geospatial databases combined with extensive research into historical building codes so you can do accurate MJ8 load calculations quickly and easily, even on non-trivial homes.

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