What are Air/Heat Exchangers or Heat Recovery Units and what are they used for?
New houses and most houses that are less than 20 years old, will usually have a Heat/Air Exchanger which is also called a Heat Recovery Unit. This is a mechanical unit that removes humidity from the houses by bringing in fresh air from the outside and removing the humid air from the inside. The heat from the warm air inside is used to warm the cold air coming in from the outside. The heat is transferred inside the unit. This is why it is called a heat exchanger. This is a must in newer houses to remove humidity because they are heavily insulated and sealed so tight, . This unit can vary in size but is usually about 18 inches high by 3-4 ft long and is installed in the utility room of the house. These units cost very little to run in electrical costs.
