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The following article was published in our article directory on August 1, 2011.
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Using Heat Pumps for Heat and Air Conditioning

Article Category: Home Management

Author Name: Ginger Jackson

Air source heat pumps are quite common in some parts of the US and are known to provide efficient heating and cooling for the home. They are especially efficient when used in warmer climates than in cooler climates. In fact, they are not usually recommended for long term use in freezing climates.

When choosing an air source heat pump for your house, it is important to find out what the heating efficiency is as determined by the heating season performance factor (HSPF). This is the total space heating that is needed during the season heating and is measured in British Thermal Units (BTU). For cooling efficiency, the seasonal energy efficiency ratio (SEER) is what is commonly used to measure efficiency during the cooling season and is also expressed in BTU.

When using a heat pump for heat and air conditioning there are some factors which need to be considered before purchase. These include the presence of a demand-defrost control which is used to reduce the defrost cycles. The advantage of that is that the energy that is used is greatly reduced.

Another consideration is the location of the outdoor unit, which should be some distance away from the windows because of the noise factor. Better yet, it is advisable to pick a heat pump which has an outdoor sound rating of 7.6 bels or lower. When locating a heat pump outdoors, the location is very important and not just because of the noise factor. If there are high winds, the performance of the heat pump will be affected, so a windbreaker, such as a fence should be placed to protect the unit from high winds.

For maximum performance and energy, get your heating, ventilation and air conditioning (HVAC) technician to measure airflow even before checking the refrigerant charge because airflow will significantly affect the refrigerant measurements. The temperatures and pressures from the manufacturers should match the measured ones.

Several new heat pump technologies have been gradually introduced into the market such as Reverse Cycle Chillers (RCC) for example. Where it is challenging to get hold of natural gas, the RCC is a cost effective heat pump particularly for homes that run on electricity. Another new technology is the Cold Climate Heat Pump, which when tested in freezing climates, showed an improved efficiency of up to 60 percent. The All Climate Heat Pump is another innovation which is focused majorly on heating so that it is said to operate in sub-freezing climates without the need for additional heating.

These new technologies in air source heat pumps make it a possible choice for your heat and air conditioning solutions. However, before you make up your mind to get a heat pump, be sure to consult with your HVAC expert for further advice and accurate measurements.

Keywords: air conditioning, heating systems

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