Top Rated AC & Heating Experts for high efficiency furnace Apex, NC. Dial +1 919-929-9886. 24 Hour Calls. Guaranteed Services – Low Prices.

Contact Us

Boer Brothers Heating & Cooling

104 R NC Hwy 54 West #333 Carrboro, NC 27510

Telephone

1 919-929-9886

Hours

Mon-Fri : 8am-7pm

Sat-Sun : 9am-5pm

Room pressure can be either favorable or negative with respect to outside the room. Favorable pressure takes place when there is more air being provided than exhausted, and is typical to reduce the infiltration of outside impurities. Natural ventilation is a key element in lowering the spread of airborne health problems such as tuberculosis, the common cold, influenza and meningitis. Natural ventilation requires little maintenance and is affordable. A cooling system, or a standalone air conditioning unit, provides cooling and humidity control for all or part of a structure. Air conditioned structures frequently have actually sealed windows, due to the fact that open windows would work against the system intended to preserve consistent indoor air conditions. The percentage of return air made up of fresh air can typically be controlled by changing the opening of this vent. Common fresh air consumption is about 10%. [] Air conditioning and refrigeration are provided through the elimination of heat. Heat can be removed through radiation, convection, or conduction. Refrigeration conduction media such as water, air, ice, and chemicals are described as refrigerants. It is important that the a/c horse power suffices for the area being cooled. Underpowered cooling system will result in power waste and ineffective usage. Appropriate horse power is needed for any ac system installed. The refrigeration cycle utilizes 4 essential elements to cool. The system refrigerant begins its cycle in a gaseous state. From there it goes into a heat exchanger (in some cases called a condensing coil or condenser) where it loses energy (heat) to the outside, cools, and condenses into its liquid phase. An (likewise called metering device) manages the refrigerant liquid to flow at the correct rate. The liquid refrigerant is returned to another heat exchanger where it is allowed to vaporize, hence the heat exchanger is often called an evaporating coil or evaporator. In the process, heat is taken in from inside and transferred outdoors, leading to cooling of the building. In variable environments, the system might consist of a reversing valve that changes from heating in winter to cooling in summer. By reversing the flow of refrigerant, the heat pump refrigeration cycle is changed from cooling to heating or vice versa. Free cooling systems can have very high efficiencies, and are in some cases combined with seasonal thermal energy storage so that the cold of winter can be used for summertime air conditioning. Typical storage mediums are deep aquifers or a natural underground rock mass accessed by means of a cluster of small-diameter, heat-exchanger-equipped boreholes. The heat pump is added-in because the storage functions as a heat sink when the system is in cooling (instead of charging) mode, causing the temperature level to slowly increase throughout the cooling season. Some systems consist of an “economizer mode”, which is sometimes called a “free-cooling mode”. When economizing, the control system will open (completely or partly) 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 permit the need to be satisfied without using the mechanical supply of cooling (usually chilled water or a direct growth “DX” unit), therefore saving energy. The control system can compare the temperature level of the outdoors air vs. In both cases, the outside air should be less energetic than the return air for the system to enter the economizer mode. Central, “all-air” air-conditioning systems (or package systems) with a combined outdoor condenser/evaporator unit are frequently installed in North American houses, workplaces, and public structures, but are difficult to retrofit (set up in a structure that was not developed to receive it) because of the large air ducts required. An alternative to packaged systems is making use of separate indoor and outdoor coils in split systems. Split systems are preferred and extensively utilized worldwide other than in North America. In North America, divided systems are usually seen in domestic applications, but they are acquiring appeal in small commercial buildings. The advantages of ductless air conditioning systems consist of simple setup, no ductwork, greater zonal control, versatility of control and quiet operation. [] In space conditioning, the duct losses can represent 30% of energy usage. Using minisplit can lead to energy cost savings in area conditioning as there are no losses related to ducting. Indoor systems with directional vents install 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 effective and the footprint is typically smaller than the bundle systems.

Call Now