Does the AC system have to work less when the tem...

Yes, an AC system does have to work less to maintain a cool temperature inside when the outside temperature is lower. This is because air conditioners work by transferring heat from inside a building to the outside. Here's why the outside temperature matters:

• Temperature difference: Air conditioners rely on the principle that heat flows from hot to cold. The bigger the temperature difference between the inside and outside air, the easier it is for the AC to remove heat from your home. So, with a cooler outside temperature, there's less work for the AC to do.

• Refrigerant efficiency: Your AC unit uses a refrigerant that absorbs heat inside your house and releases it outside. When it's hotter outside, the refrigerant has to work harder to shed heat, making the whole AC system less efficient.

However, there are some things to keep in mind:

• There's a limit. While a cooler outside temperature helps, AC systems aren't designed to run efficiently when the outside temperature gets too low. In fact, running an AC when it's very cool outside can cause the coils to freeze up, which can damage the system.

• It's all relative. Even if it's cooler outside, if the indoor temperature is still significantly higher than the desired setting, the AC will still need to run to bring it down.