Air Source Heat Pumps

11th October 2008 by les Comments Off on Air Source Heat Pumps

There are basically two types of air source heat pumps. The design and layout of the building will determine which type is best suited for your

Outunit of heat pump

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needs.

Packaged Heat Pumps

Packaged heat pumps consist of an entire package consisting of a compressor and both heat exchangers located on the exterior of the property. Ductwork channels conditioned air from the exterior heat pump to the building interior. Interior air ductwork provides all interior heating and cooling.

Split System Heat Pumps

The split system heat pump is by far the most common heat pump in use today. The exterior unit consists of the compressor and an exchanger. The indoor unit consists of an exchanger and a duct air handling unit. Ductwork provides for entire building with heating and cooling. The flexibility of this configuration allows for a more versatile varied installation.

There are more variations of the split system heat pumps such as:

The triple function heat pump. This variation is the same as the split system with the addition of using excess heat from cooling for almost free heating of domestic water during summer months.

The free delivery split heat pump system. This variation uses no ductwork. The exterior unit consists of the compressor and an exchanger. The indoor unit consists of multiple exchangers located at various locations or zones and independently controled for temprature.

Heating Seasonal Performance Factor (HSPF) is the unit used for air source heat pump efficiency. Ranges are typically 7.6-8.2

Seasonal Energy Efficiency Ratio (SEER) is the unit used for air source heat pump cooling efficiency. Ranges are typically 13-16 with higher the better.

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Heat Pump Reviews

10th October 2008 by les Comments Off on Heat Pump Reviews

Heat pumps are by far the most efficient way to heat your property evenly in the winter and to keep it comfortably cool in the summer. A long

A simple stylized diagram of the refrigeration...
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held myth is that it is cheaper to heat your property with natural gas. Heat  pumps are much more efficient and have a lower operating cost by a wide margin. Heat pumps are designed primarily for either heating, cooling or both. Modern heat pumps consist of the following components:

  • Thermostat. This may be a manual type or a digital fully automatic electronicially programmable type. A programmable thermostat will allow you to set back or forward the temprature of your heat pump at various times of the day or night and on specific days of the week for energy savings.
  • Air handling fan component to circulate conditioned air throughout the building.
  • Air filtration to remove dust, pollen and allergens from the circulated air.
  • Internal heat exchanger coil to allow the transfer of heat and cold from inside to outside.
  • External heat exchanger coil and fan to transfer heat and cold to the outside air.
  • Geothermal heat pumps require a series of holes drilled into the ground with plastic tubes circulating a liquid heat transferring medium.
  • Electronic circuit board to control heat and cool functions within the various components.
  • An existing forced air furnace may be modified to allow the addition of a heat pump.

As with any manufactured product, heat pumps are not all created equal.

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