Air Conditioners Really Are Getting Better
New air conditioners perform significantly better, last longer, and run quieter than past models.
Central air-conditioning has always been the convenience people love to hate.
Despite the fact that it’s standard equipment in most American homes — 88 percent of new construction and millions of retrofits every year — the systems have long been decried for the alarming amounts of electricity they devour, their ozone-depleting refrigerants, and the unseemly levels of noise generated by their condenser units, which rumble away just outside the house.
Happily, new AC technology means we can chill out about those worries. With improvements in fan-blade shape and compressor technology, some models make one-twentieth the noise of old units. A new refrigerant, known generically as R410A, is free of the chlorine that eats away the ozone layer. And energy use is on the decline. Twenty years ago, a typical system might use 6,000 watts of electricity per hour to cool an average-size house. Today, that same house can be cooled with as little as 1,710 watts per hour, an astounding 250-percent increase in operating efficiency.
When it comes to San Diego Air condition installation, people count on the experts at Air Plus Heating and Cooling. We offer guaranteed satisfaction, and just the right options for your home. We put the customer first, and it shows! For our selection of Air conditioners visit our Central Cooling page.
HOW AN AIR CONDITIONER WORKS
The job of your home air conditioner is move heat from inside your home to the outside, thereby cooling you and your home. Air conditioners blow cool air into your home by pulling the heat out of that air. The air is cooled by blowing it over a set of cold pipes called an evaporator coil. This works just like the cooling that happens when water evaporates from your skin. The evaporator coil is filled with a special liquid called a refrigerant, which changes from a liquid to a gas as it absorbs heat from the air. The refrigerant is pumped outside the house to another coil where it gives up its heat and changes back into a liquid. This outside coil is called the condenser because the refrigerant is condensing from a gas back to a fluid just like moisture on a cold window. A pump, called a compressor, is used to move the refrigerant between the two coils and to change the pressure of the refrigerant so that all the refrigerant evaporates or condenses in the appropriate coils.
The energy to do all of this is used by the motor that runs the compressor. The entire system will normally give about three times the cooling energy that the compressor uses. This odd fact happens because the changing of refrigerant from a liquid to a gas and back again lets the system move much more energy than the compressor uses.