In most of the states in the U.S. both heating and cooling are necessary throughout the year to keep a home comfortable. In the heat of the summer, North Carolina can get as hot as 80 degrees and, in the winter, as cold as 45 degrees Fahrenheit. The comfortable temperature for the average human being is 68 to 77 degrees Fahrenheit. For both summer and winter the temperature needs to be adjusted. For relief from the uncomfortable temperatures, see a heating and air conditioning fayetteville nc specialist.
Types of Central Air Conditioning
Split systems-this system shares the ductwork with the system for heating. This is the most common central air conditioning system in America. The evaporator coil is hidden inside, while the condenser coil is encased in a metal box outside. The condenser coil releases the heat from inside and the compressor pumps refrigerant between the two coils.
Heat pumps have a dual purpose. In the winter, it takes heat from the outside and uses it to keep the house warm. In the summer, it pumps heat from the inside to the outside. Packaged central air conditioners combine the condenser coil, the compressor and the evaporator into one unit. The unit is placed on the roof or on a concrete slab near the foundation. Ducts are placed in the roof or the walls to draw warm air from inside, returning cool air from outside. Ductless mini-split systems provide separately operated systems for each room. They are all connected to an outside compressor/condenser and indoor handling units that are mounted high on the wall with blowers.
The Most Popular Heating Systems
Natural gas furnaces are less expensive than electricity. This form of heating, however, is not as efficient as electricity. Electric furnaces are not as powerful as a gas furnace, so it takes longer to heat a space. Hybrid heat pumps combine the positive qualities of a heat pump and natural gas heat. This system carries refrigerant between an indoor and outdoor unit. In inter, the heat pump reverses the flow of refrigerant. Now, it absorbs heat from outside and moves it indoors to warm the space. When it gets unusually cold, the heat pump converts to a natural gas furnace.
The heating and air conditioning needs of the U.S. population varies drastically from north to south and east to west. In northern states, the temperatures drop down to 6 to 18 degrees Fahrenheit in North Dakota during the winter and as low as 12 degrees in Maine. The greater extremes are exhibited in the summer temperatures. In Florida, the summer temperatures go up to 95 degrees Fahrenheit, while in Death Valley, California, the temperature has gone as high as 134 degrees Fahrenheit.
The geography of the United States demands that we control the temperature in our homes for our mere survival, not just our comfort. Luckily HVAC is one profession that technicians receive specialized training to do in America. This fact allows the consumer to have confidence in their HVAC technician and to look forward to receiving future utility bills.