Manual J Doesn’t Tell You Equipment Capacity

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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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Here’s a little conundrum for you. To get the right amount of heating and cooling to each room in your home, you need a load calculation. Rules of thumb don’t work. But if you do a load calculation, the result isn’t the size of air conditioner, heat pumpHeating and cooling system in which specialized refrigerant fluid in a sealed system is alternately evaporated and condensed, changing its state from liquid to vapor by altering its pressure; this phase change allows heat to be transferred into or out of the house. See air-source heat pump and ground-source heat pump., furnace, or boiler you need. It’s only the first step to sizing your system.

Do you know why? Let’s take a look.

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