Difference between revisions of "Calculate BTU Per Square Foot"
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=== Determining the Correct Cooling Capacity === | === Determining the Correct Cooling Capacity === | ||
# Figure the total square footage to be cooled. If you're buying a room air conditioner, you only need to figure the room whose window the air conditioner will be installed in; if you're buying a central air conditioner or heat pump, you need to figure the entire square footage of the house served by ductwork, as described under "Determining How Much to Heat or Cool." | # Figure the total square footage to be cooled. If you're buying a room air conditioner, you only need to figure the room whose window the air conditioner will be installed in; if you're buying a central air conditioner or heat pump, you need to figure the entire square footage of the house served by ductwork, as described under "Determining How Much to Heat or Cool." | ||
| − | # Determine the necessary capacity. One method for determining capacity is refer to the estimates on this index.<ref>http://www.energystar.gov/index.cfm?c=roomac.pr_properly_sized</ref> Note that air conditioners are rated in BTUs per hour, but the label may abbreviate this to just "BTU." | + | # Determine the necessary capacity. One method for determining capacity is refer to the estimates on this index.<ref name="rf5798">http://www.energystar.gov/index.cfm?c=roomac.pr_properly_sized</ref> Note that air conditioners are rated in BTUs per hour, but the label may abbreviate this to just "BTU." |
#*To cool 100–150 ft<sup>2</sup>, you need ~5,000 BTUs per hour. | #*To cool 100–150 ft<sup>2</sup>, you need ~5,000 BTUs per hour. | ||
#*To cool 150–250 ft<sup>2</sup>, you need ~6,000 BTUs per hour. | #*To cool 150–250 ft<sup>2</sup>, you need ~6,000 BTUs per hour. | ||
