Room air conditioners are typically used to cool one or two rooms and are inexpensive alternatives to central air conditioning systems. Most units are designed to fit conveniently in a double-hung window.
A stately stone home with a chimney and elaborate windows features two air conditioning units in dormered windows. While stone homes often stay cool in hot weather, attic rooms often need additional help to fight off heat and humidity.
A clean, white HEPA filter is displayed horizontally on a bright yellow background. Used in air conditioners, vacuum cleaners, and air purifying machines, HEPA filters ensure that the air is clean by removing bacteria and impurities.