Best AC & Heating Experts for home hvac system Phenix City, AL. Phone +1 334-298-1278. 24 Hour Calls. Guaranteed Services – Low Prices.

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Riley Heating & Air Conditioning

1019 Knowles Rd, Phenix City, AL 36869, United States

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+1 334-298-1278

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Mon-Sun, 8am – 9pm

Space pressure can be either positive or unfavorable with respect to outside the space. Positive pressure occurs when there is more air being supplied than exhausted, and is common to minimize the seepage of outside pollutants. Natural ventilation is a key consider minimizing the spread of airborne illnesses such as tuberculosis, the common cold, influenza and meningitis.

Natural ventilation needs little maintenance and is inexpensive. An air conditioning system, or a standalone air conditioning unit, provides cooling and humidity control for all or part of a building. Air conditioned structures frequently have actually sealed windows, because open windows would work versus the system planned to maintain continuous indoor air conditions.

The percentage of return air comprised of fresh air can generally be controlled by changing the opening of this vent. Normal fresh air consumption has to do with 10%. [] Air conditioning and refrigeration are offered through the elimination of heat. Heat can be eliminated through radiation, convection, or conduction. Refrigeration conduction media such as water, air, ice, and chemicals are described as refrigerants.

It is crucial that the a/c horsepower is adequate for the location being cooled. Underpowered cooling system will result in power wastage and inefficient usage. Appropriate horse power is required for any air conditioning unit installed. The refrigeration cycle utilizes 4 important components to cool. The system refrigerant begins its cycle in a gaseous state.

From there it goes into a heat exchanger (sometimes called a condensing coil or condenser) where it loses energy (heat) to the outdoors, cools, and condenses into its liquid phase. An (also called metering gadget) controls the refrigerant liquid to flow at the proper rate. The liquid refrigerant is returned to another heat exchanger where it is enabled to vaporize, thus the heat exchanger is frequently called an evaporating coil or evaporator.

At the same time, heat is absorbed from inside and moved outdoors, resulting in cooling of the building. In variable climates, the system might include a reversing valve that changes from heating in winter to cooling in summertime. By reversing the flow of refrigerant, the heat pump refrigeration cycle is altered from cooling to heating or vice versa.

Free cooling systems can have really high performances, and are in some cases integrated with seasonal thermal energy storage so that the cold of winter can be utilized for summertime air conditioning. Typical storage mediums are deep aquifers or a natural underground rock mass accessed via a cluster of small-diameter, heat-exchanger-equipped boreholes.

The heatpump is added-in because the storage acts as a heat sink when the system is in cooling (as opposed to charging) mode, causing the temperature to slowly increase throughout the cooling season. Some systems include an “economizer mode”, which is sometimes called a “free-cooling mode”. When economizing, the control system will open (completely or partially) the outside air damper and close (totally or partially) the return air damper.

When the outside air is cooler than the demanded cool air, this will enable the demand to be fulfilled without using the mechanical supply of cooling (usually chilled water or a direct expansion “DX” unit), hence saving energy. The control system can compare the temperature level of the outdoors air vs.

In both cases, the outdoors air needs to be less energetic than the return air for the system to enter the economizer mode. Central, “all-air” air-conditioning systems (or bundle systems) with a combined outside condenser/evaporator system are frequently set up in North American houses, workplaces, and public structures, but are challenging to retrofit (set up in a building that was not created to get it) because of the bulky duct needed.

An option to packaged systems is the usage of different indoor and outdoor coils in split systems. Split systems are preferred and extensively utilized around the world except in The United States and Canada. In The United States and Canada, split systems are usually seen in residential applications, however they are getting popularity in small commercial structures.

The advantages of ductless a/c systems include simple installation, no ductwork, greater zonal control, flexibility of control and peaceful operation. [] In space conditioning, the duct losses can represent 30% of energy usage. The use of minisplit can result in energy savings in space conditioning as there are no losses connected with ducting.

Indoor systems with directional vents mount onto walls, suspended from ceilings, or fit into the ceiling. Other indoor systems install inside the ceiling cavity, so that brief lengths of duct deal with air from the indoor unit to vents or diffusers around the spaces. Split systems are more efficient and the footprint is typically smaller sized than the package systems.

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