Central Air Conditioning Notes
Central Air Conditioning: Why is it the best system?

There are typically two types of heating and air conditioning systems used for apartment construction. The first, and best type, is central air conditioning. Central air conditioning means that you have a furnace, mounted in a closet or utility room, which blows air into ductwork which then is connected to supply grilles in the wall, ceiling or floor of each room. Because of this configuration hot or cold air can be delivered evenly to each space, increasing the comfort of the tenants. Other capabilities of central air systems include the ability to efficiently filter all of the air in the apartment and to keep the entire apartment at the same temperature. One wall-mounted thermostat controls the temperature in the apartment.

The other type of heating cooling system found in buildings is a "thru-wall" air conditioning unit for cooling and electric baseboard heaters for heat. With thru-wall air conditioning a single unit is typically installed in the living room with cool air only being delivered to that room. There is usually no means to deliver cool air to the bedrooms and even with the bedroom door left open during the night (this is objectionable to some people) the bedrooms tend to be hotter that the living room. There is no or little filtration of the air through the wall unit and the units tend to be noisier than central air units. The main advantage of "thru-wall" units is that they are cheaper to install. Baseboard heaters are usually located in each room. They work adequately but they operate best when they are not covered up; this is sometimes challenging in already tight apartment quarters.