Summer’s coming and things are of course getting hot. It is time to cool your homes and workplaces with a new air conditioner or swamp cooler. Along with air conditioning and swamp cooling, however, come higher energy costs. Conservationists suggest planting trees around your house or office to cool it with the shade. This will save you money on your energy bill, and keep the place nice and cool. For those who do not have the option of planting a tree to cool off in the shade, or who do not have the time to wait for a tree to grow large enough to cover them in shade, there are more efficient air conditioners and swamp coolers. It may be worth it to do a little research to find a more efficient air conditioner for your home or office; one which cools a larger area for a lower cost.

Air conditioners have a standard energy efficiency rating or EER. Air conditioners are often rated by the number of British Thermal Units (Btu) of heat they remove per hour. Almost all new air conditioners will come with and/or be advertised with ratings of their cooling and energy efficiency in the measures noted above. You will need an air conditioner that will sufficiently keep a room cool while using as little energy as possible. A number of factors can affect the temperature of a room, including the size of the room, the height of the ceiling, the insulation in the walls and the ceiling, heat generated by appliances and occupants in a room, and as noted before, whether the home, room or office you are attempting to cool is shaded or in the sun.

There are two main groups that publish calculation procedures for sizing air conditioners for your room, home or office: the Air Conditioning Contractors of America (ACCA) and the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE). Air conditioner installation contractors often use these standard measures when installing air conditioners in buildings and homes. You can also use them as you select and install the most efficient air conditioner for your home or office.

Just as a number of factors influence the heating of a room, home, or office, a number of factors affect the efficiency of your air conditioner or air conditioning system. Each air conditioner will come with a description of how many Btu per hour are removed for each watt of power it requires. Generally, however, the larger the air conditioner, the more energy it requires. A larger air conditioner may cool a room faster, but it will reduce efficiency because it turns off and on more often. This can wear down an electric air conditioner more quickly as well. It also causes more demand on the electric generation and delivery system to the air conditioner.

So, if you cannot shade your house, room, or office with a tree, perhaps you should consider keeping them cool this summer by investing in a more efficient air conditioner. Keep your home or office cooler, while keeping your bills low. Find an air conditioner that is not so large that it creates unnecessarily excessive costs to run, and which will keep the room cooler, more efficiently. Do your research, and be sure to check the Energy Guide Label, which must be attached to all new air conditioners.