K. Kelly, Inc. provides heat pumps which can operate in cooling mode to keep you comfortable.
Heat Pumps
Air-source heat pumps
Air-source heat pumps deliver cooling as efficiently as traditional central air conditioners. An air-source heat pump works like a standard air conditioner in the summer delivering cool air to the home, but is capable of reversing the flow of heat in the winter so it delivers heat to the home. During the summer, heat is gathered from the house and rejected to the outside air. During the winter, heat is gathered from outside air and rejected (delivered) to the home.
Air-source heat pump performance is measured as Seasonal Energy Efficiency Ratio (SEER) for the cooling mode and as Heating Seasonal Performance Factor (HSPF) in the heating mode. Higher SEERs and HSPFs mean higher energy efficiency. SEERs range from 10 to over 17.
Multi-speed air-source heat pumps are available and becoming more commonplace. They operate at low speed when heating or cooling conditions are low and at high speed when needed. In addition to higher HSPF and SEER ratings, indoor temperatures remain more constant, there is better humidity control, and the units are quieter.
Ground-source heat pumps
Ground-source heat pumps work in a fashion similar to air-source heat pumps except they transfer heat from or to the ground rather than the air. Two general approaches are used for coupling the heat pump to the ground. The oldest method, referred to as a ground-water heat pump (GWHP), pumps water from a well or other water source, and transfers heat from the water in the winter and to the water during the summer. The water is discharged back to the ground. The second and newer approach, referred to as a ground-loop heat pump (GLHP), buries a long loop of plastic pipe through which a water and glycol mixture is circulated. The heat pump transfers heat to or from the water. The water is circulated in the buried loop of piping where it transfers heat to the ground.
Performance and operating cost of a ground-source heat pump are dependent on performance of the heat pump and the ground loop or water source.
Water temperatures in the piping loop of a ground loop heat pump will increase in the summer and fall in the winter as heat is added or removed. If the loop is undersized, it will not be able to transfer enough heat to meet the home's needs. The water temperature in the loop will exceed design values and equipment performance and life will suffer as a result. Similar results can occur if the soil conditions do not allow adequate heat transfer between the ground and the ground loop. Sandy or dry soil reduces heat transfer rates.
Oversizing the loop will improve system performance but the increased cost of an oversized ground loop will not be cost effective. For cost-effective performance, the loop must be properly sized and installed to meet the home’s cooling and heating requirements, and for the soil conditions on site.
Proper back filling during installation of the loop is also critical for satisfactory operation. With GWHPs, amount and quality of water available will impact performance. If water flow rates are inadequate to remove or supply the needed heat, or if the water tends to rapidly scale the heat exchanger, performance and equipment life will degrade. If water quantities and qualities meet design requirements, performance of GWHPs will generally exceed those of GLHPs because the water is at a constant temperature.
Ground-source heat pumps are not rated with a seasonal performance rating. Instead, they are rated with an energy efficiency ratio (EER) for cooling of between 14 and 19, and a coefficient of performance (COP) between 3.2 and 3.9 for heating. The ratings are determined at one or two operating conditions and do not reflect seasonal performance. A listing for current products is available from the Air-Conditioning and Refrigeration Institute. Table 1 provides a range of reasonable values for seasonal COP (HSPF-equivalent) and seasonal EER (SEER-equivalent) values for properly designed and installed GWHPs and GLHPs.
To help assure adequate humidity control in the summer, the GSHP is often sized to match the home cooling requirements with the cooling capacity of the equipment. As a result, single-speed units often need supplemental resistance heating to meet peak heating requirements. Multi-speed and multi-staged GSHPs are available that provide a better match between the heating and cooling needs of a home and the capacities of the equipment.
Typically, dual-capacity units will operate on low speed or single-stage during the summer or when heating needs are moderate. High-speed or two-stage operation will commence during peak heating requirements.
Refrigerants
Most central cooling equipment is now charged with R410A. Unlike many refrigerants R410A does not contribute to ozone depletion, and is therefore widely used. Older systems are typically charged with R-22. However, production of R-22 has been phased out and is no longer available. Making what is left of the R-22 stock extremely expensive. Some alternative refrigerants are available at a premium price but there is no improvement in system performance as a result of the refrigerant. Decisions on the type of refrigerant used should be based on anticipated life of the equipment and the cost premium required. Average life of an air conditioner is around 15 years.
Need More Information on Cooling and Air Conditioning?
Cooling your home is an important aspect of your family life. To stay cool and comfortable all summer long you'll want to make sure you are choosing the right cooling and air conditioning system for your home and your budget. The air conditioning contractors at K. Kelly offer top of the line cooling and air conditioning systems at affordable prices from trusted brands such as Rheem and Daikin and provides free air conditioning Price Quotes.
Whether you need air conditioning repairs, service or air conditioner replacement, Call 920-469-3500 today to get your free cooling system quote or heat pump questions answered from the Green Bay air conditioning contractors at K. Kelly Inc.
Air-source heat pumps deliver cooling as efficiently as traditional central air conditioners. An air-source heat pump works like a standard air conditioner in the summer delivering cool air to the home, but is capable of reversing the flow of heat in the winter so it delivers heat to the home. During the summer, heat is gathered from the house and rejected to the outside air. During the winter, heat is gathered from outside air and rejected (delivered) to the home.
Air-source heat pump performance is measured as Seasonal Energy Efficiency Ratio (SEER) for the cooling mode and as Heating Seasonal Performance Factor (HSPF) in the heating mode. Higher SEERs and HSPFs mean higher energy efficiency. SEERs range from 10 to over 17.
Multi-speed air-source heat pumps are available and becoming more commonplace. They operate at low speed when heating or cooling conditions are low and at high speed when needed. In addition to higher HSPF and SEER ratings, indoor temperatures remain more constant, there is better humidity control, and the units are quieter.
Ground-source heat pumps
Ground-source heat pumps work in a fashion similar to air-source heat pumps except they transfer heat from or to the ground rather than the air. Two general approaches are used for coupling the heat pump to the ground. The oldest method, referred to as a ground-water heat pump (GWHP), pumps water from a well or other water source, and transfers heat from the water in the winter and to the water during the summer. The water is discharged back to the ground. The second and newer approach, referred to as a ground-loop heat pump (GLHP), buries a long loop of plastic pipe through which a water and glycol mixture is circulated. The heat pump transfers heat to or from the water. The water is circulated in the buried loop of piping where it transfers heat to the ground.
Performance and operating cost of a ground-source heat pump are dependent on performance of the heat pump and the ground loop or water source.
Water temperatures in the piping loop of a ground loop heat pump will increase in the summer and fall in the winter as heat is added or removed. If the loop is undersized, it will not be able to transfer enough heat to meet the home's needs. The water temperature in the loop will exceed design values and equipment performance and life will suffer as a result. Similar results can occur if the soil conditions do not allow adequate heat transfer between the ground and the ground loop. Sandy or dry soil reduces heat transfer rates.
Oversizing the loop will improve system performance but the increased cost of an oversized ground loop will not be cost effective. For cost-effective performance, the loop must be properly sized and installed to meet the home’s cooling and heating requirements, and for the soil conditions on site.
Proper back filling during installation of the loop is also critical for satisfactory operation. With GWHPs, amount and quality of water available will impact performance. If water flow rates are inadequate to remove or supply the needed heat, or if the water tends to rapidly scale the heat exchanger, performance and equipment life will degrade. If water quantities and qualities meet design requirements, performance of GWHPs will generally exceed those of GLHPs because the water is at a constant temperature.
Ground-source heat pumps are not rated with a seasonal performance rating. Instead, they are rated with an energy efficiency ratio (EER) for cooling of between 14 and 19, and a coefficient of performance (COP) between 3.2 and 3.9 for heating. The ratings are determined at one or two operating conditions and do not reflect seasonal performance. A listing for current products is available from the Air-Conditioning and Refrigeration Institute. Table 1 provides a range of reasonable values for seasonal COP (HSPF-equivalent) and seasonal EER (SEER-equivalent) values for properly designed and installed GWHPs and GLHPs.
To help assure adequate humidity control in the summer, the GSHP is often sized to match the home cooling requirements with the cooling capacity of the equipment. As a result, single-speed units often need supplemental resistance heating to meet peak heating requirements. Multi-speed and multi-staged GSHPs are available that provide a better match between the heating and cooling needs of a home and the capacities of the equipment.
Typically, dual-capacity units will operate on low speed or single-stage during the summer or when heating needs are moderate. High-speed or two-stage operation will commence during peak heating requirements.
Refrigerants
Most central cooling equipment is now charged with R410A. Unlike many refrigerants R410A does not contribute to ozone depletion, and is therefore widely used. Older systems are typically charged with R-22. However, production of R-22 has been phased out and is no longer available. Making what is left of the R-22 stock extremely expensive. Some alternative refrigerants are available at a premium price but there is no improvement in system performance as a result of the refrigerant. Decisions on the type of refrigerant used should be based on anticipated life of the equipment and the cost premium required. Average life of an air conditioner is around 15 years.
Need More Information on Cooling and Air Conditioning?
Cooling your home is an important aspect of your family life. To stay cool and comfortable all summer long you'll want to make sure you are choosing the right cooling and air conditioning system for your home and your budget. The air conditioning contractors at K. Kelly offer top of the line cooling and air conditioning systems at affordable prices from trusted brands such as Rheem and Daikin and provides free air conditioning Price Quotes.
Whether you need air conditioning repairs, service or air conditioner replacement, Call 920-469-3500 today to get your free cooling system quote or heat pump questions answered from the Green Bay air conditioning contractors at K. Kelly Inc.