International Compliance Association (ICA) Home Inspector Practice Exam

What is a key reason you should avoid turning on air conditioning units during cold weather?

1. They may freeze

2. They can cause a fire hazard

3. They won't cool down

4. They are damaged by cold

The correct answer is: They may freeze

Avoiding the operation of air conditioning units during cold weather is crucial primarily because they may freeze. When the outdoor temperature drops significantly, the refrigerant in an air conditioning system can become excessively cold, causing moisture in the system to freeze on the coils. This can lead to blockages, reduced efficiency, and potentially serious damage to the unit. Operating an air conditioning unit in cold conditions can also cause the compressor to malfunction because it is not designed to handle the low temperatures and may require repair or replacement if it sustains damage. It’s important to recognize that while some systems are built to handle cooler temperatures, many common residential units are not, making it risky to operate them during cold weather.