If you're in the market to replace your air-conditioning system, don't sweat it. Consumer Reports tested central-air systems to see which hold up best and has recommendations on how to keep them in ...

The modern air conditioning system cools an indoor space by using the refrigeration cycle. This refrigeration cycle works by controlling the level of energy in the system’s refrigerant: Some parts of ...

As summer approaches, now is the time to make sure your AC system is in good repair, so that it’s able to keep you cool through the coming months. And for those without central AC, it may be time to ...

IN A WARMING world it helps to stay cool. But doing so also threatens the planet. Most air conditioners use refrigerant gases called hydrofluorocarbons (HFCs). Though these do not deplete Earth’s ...