Quote (Azrad @ Aug 18 2013 09:06pm)
An air conditioner is a heat pump that typically is used to move thermal energy (BTU) from inside your to, to outside your home. Your diagram shows it moving thermal energy into your home from outside your home (which is backwards).
BTU stands for British Thermal Unit, and is a measure of temperature changing ability. It applies to both hot and cold.
As for my pic...what color is 18,000 BTU written in?
A: Blue, why blue...cause blue is a cooler color...unless you're color blind, you should have figured that out.