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Air Conditioning and Your Rental Property

Michigan summers really bring the heat at times, so it’s no surprise when tenants seek out rental properties fitted with an air conditioning system- or pass on those without some form of air cooling unit. Powering air conditioning costs property owners $ 11 billion annually, and nearly 2/3 of all US homes have some type of air conditioner. And while air conditioners should be serviced by heating and cooling professionals, property owners and tenants alike can benefit from knowing a little more about air conditioners, how they work and what makes them more effective.


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A central air conditioning system is usually connected to a home’s forced air system, which means it uses the same ducts, motor and blower that is used to heat the home. With this type of air conditioning, main components include:

  1. Condenser (usually on a concrete slab outdoors): It contains the compressor, coolant lines, condenser coil and fan.
  2. Evaporator: (Indoors, above or near the furnace): consists of the filter, blower, drain lines and the cold air return


In a nutshell, hot air from the home goes in the return duct, then is blown over the cool evaporator coil (cooled by refrigerant ) and delivered through the air ducts. The warm air is directed outdoors via the fan in the condenser unit.


To avoid any a/c issues, regular inspections of the unit by professionals is recommended. Also, trim away any weeds, long grass or vines that may obstruct the outside condenser unit. During the fall and winter seasons, protect the condenser unit with a proper cover to avoid ice damage and leaf blockages.


air conditioner

An alternative to central air is the window unit, which works like central air on a smaller scale without using the air duct system. Window units are cheaper to run (if used efficiently) than central air, but due to their small size are only capable of cooling one or a few rooms or small areas. Window units too large for a room can also be inefficient and result in “clammy” air.


* Energy-Star window units are up to 50% more efficient than a standard model and provide a shutoff feature that maintains the coolness of a room without running constantly.


The best way to maintain a window unit is by cleaning and/or replacing the air filter regularly. Close off any gaps in the window space to keep cool air from leaking out.


In addition to the above-mentioned types of air cooling systems there are some other options which may be worth thinking about:

  1. A split system: Mounted on the wall, this type provides zoned cooling minus air ducts.
  2. Evaporative Coolers: These cool air using evaporated water, which is then dispersed throughout the house.
  3. Natural Ventilation/Fans: Opening windows and assembling fans is the cheapest way to cool people. Fans do not cool rooms themselves, so turn them off when no one is in the room.

We are pledged to the letter and spirit of U.S. policy for the achievement of equal housing opportunity throughout the Nation. See Equal Housing Opportunity Statement for more information.