If you are considering a central air conditioner, you may be asking if you need a return air in every room? So, I did some research on this topic. It turns out that every room should have a return...

Many people ask me if their air conditioners are AC or DC. So, I did some research to find out their differences. Most air conditioners use AC instead of DC. Air conditioners' main power supply...

Some people wanted to know if they can use a flex duct for return air as they concern about the airflow issues. Hence, I did some research. Flex duct is widely used for return air in commercial...

I was finding ways to improve the efficiency of my air conditioner and I wonder when is an air conditioner most efficient. Thus, I did some research. An air conditioner is more efficient at night...

After spending countless hours studying how an air conditioner works, I put together all my research and explaining them in layman's terms here. To produce this article, I read books and journals...

I'm sitting in my air-conditioned room for long hours and it makes me wonder, does air conditioner provide oxygen? So, I did some research. Air conditioners do not provide oxygen. The air...