As we continue with preparations for the arrival of warm weather, we’d like to address a question we often hear from customers: “How cool can an AC make my home?” People often look at the BTUs of an air conditioner, which is a measurement of how many units of heat an AC unit can remove from a house per hour, as an indication of the air conditioner’s cooling power.
This is mostly correct: the BTUs removed per hour measure the air conditioner’s capacity, the amount of work it can do. An AC that is under-capacity, also known as undersized, for a house will not remove enough heat from the building to provide the desired comfort. When our professionals install a new air conditioner for a home, we carefully measure the home’s cooling requirements so we can match the air conditioner’s capacity to it.
However, capacity is unrelated to the question of how cool an air conditioning system can make a house. This is a question of the temperature differential. We’ll explain more below.