Running an AC unit is a big—but necessary—burden. In fact, it is one of the most expensive appliances for a homeowner to operate. If you live in a hot climate, owning an AC unit is more than a luxury, it is necessary for keeping you and your family healthy. If you can't get rid of your AC unit, you can get a highly efficient AC. When you buy your first unit or replace the old one, you need to know what to look for in order to make sure you buy one that will keep your costs down.
Extra Large Coils
An AC unit is dependent on one set of coils to vaporize refrigerant, and in so doing cool your house, and a second set of coils to condense the refrigerant back to a liquid. The smaller these coils are, the longer it will take for your AC unit to cool your house down. While a large set of condenser coils will take up space in your yard, and the evaporator coils will take up extra space in your house, the amount of money you save on your cooling costs will more than justify losing a little bit of space in your yard.
More than One Compressor
If you have one compressor, your AC unit will only be able to run at one capacity. On the other hand, if you have two compressors, your unit will be able to run at three speeds. One compressor will be smaller and one larger. When there is not a lot of need for cooling, the AC unit will operate with the smaller compressor. When there is a slightly larger need for cooling, it will run with the second compressor, and when you need most cooling, it will operate both compressors. Using the smaller compressors, will use less electricity, and will therefore save you money
If your fan has a multistage motor, it will be able to run at different speeds, and running at lower speeds when there is less need for cooling will save you money.
These are the key components of a highly efficient AC unit. While buying an air conditioner will help you save money on cooling costs, it is not the only step you need to take. In order to learn if a highly efficient AC service system will work for you, you need to talk to a HVAC technician.