Btu is short for British thermal units. A single Btu is equal to the amount of warmth required to raise 1 pound of water by one degree Fahrenheit. In cooling, Btu is used to evaluate how much warmth is faraway from a home. The device was about fifty five decibels https://iptv-service42097.wikisona.com/977594/helping_the_others_realize_the_advantages_of_installation