Split-ductless air conditioning systems are gaining popularity in Canadian homes. Home-owners with hot water, electric baseboard or other radiant heating systems not employing air ducts, can enjoy summertime climate control as well. Ductless systems are also ideally suited to additions, where extension of existing ducts may be difficult or impractical.
Split-system air conditioners for homes without air ducts
Ductless split-systems combine the zone control of window or through-the-wall units, with the whole-house cooling capabilities of a central system. Like central systems, they have two main components, a compressor-condenser unit (outdoors) and an air-handler containing an evaporator coil and a fan (indoors.) The two halves are linked only by the coolant tubing.
Ductless heat pumps provide heating as well as cooling. Watch video: Mitsubishi Electric Mr. Slim: How It Works
Note: The term, "split-system," can also be used to describe conventional central air-conditioners and heat pumps. If you’re shopping for “ductless” systems, make sure the dealer understands which system you are looking for. Ductless split-systems are sometimes referred to as “mini-splits."
Gil Strachan is a professional home inspector, representing Electrospec Home Inspection Services in east-central Ontario since 1994.