How Air Conditioning Works

Published: 03rd May 2011
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When searching for an Energy Star air conditioner, understanding how the unit works may be crucial in determining the right model for your home. Purchasing an energy efficient air conditioner may be the most cost saving purchase you can make for your home. Most air conditioners, including the Energy Star air conditioner, work on the same principle as your refrigerator. These units extract heat from your home and release it to the outside. Air conditioners work by using a compressor to pump a refrigerant through a closed loop that includes an evaporator and a condenser.

The evaporator in an Energy Star air conditioner usually operated inside the house; as the refrigerant evaporates, it captures indoor heat and stores it inside the evaporated gas. The condenser operates outside; as the refrigerant turns back into a liquid, its heat is released. The heat then escapes to the outdoor air through the condenser coils.

Depending on the design of the Energy Star air conditioner, and how it is suited for the room it is placed, you can figure out how to significantly reduce your utility costs. There are even special air conditioning geothermal units that can heat your home and your water at the same time. A single room Energy Star air conditioner is usually a window unit that has both an evaporator and a condenser in one and is shaped like a box. Other models may be energy saving air conditioners for case windows.


A central Energy Star air conditioner typically consists of an indoor evaporator unit whose coils are integrated into the duct work. A ventilation fan blows the warm air from the house against the coils where it is cooled down, and the outdoor condenser unit releases heat into the yard. A typical Energy Star air conditioner is generally incorporated into a forced air heating system. Some of these units have both the evaporator and the condenser combined into one unit that is mounted on an outside wall.

Another type of air conditioner is a ductless minisplit system that is used for the entire house. An evaporative unit is located in each room and each are connected to a single outside condenser unit to which humidity from each room is coiled to. The only downfall of this system is that walls may have to be opened in order to install the many parts. However, this unit is very energy efficient and can end up saving you a bundle in utility costs.

When purchasing an Energy Star air conditioner, there are many different models and sizes to choose from. Determining the needs of your home, and how much energy savings you want to have, is crucial when it comes to selecting the unit you want. Minimizing air conditioning use is another way to further lower your energy costs. Each particular brand of energy efficient air conditioner comes with different perks, so it's important to shop around in order to find the perfect machine for your home. Though it's possible to live without air conditioning, we don't need to because of the low cost of energy efficient models.


Energy Star Air Conditioner

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