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What Size Heat Pump Do I Need For My House

Views: 643     Author: Site Editor     Publish Time: 2021-02-23      Origin: Site

Heat pumps transfer hot energy from the air, ground and water to heat water and provide house heating and cooling. The way heat pump moves heat is similar to how a refrigerator works in reverse. In a refrigerator, heat is removed from an enclosed box and then it is expelled into the surrounding air.


In a heat pump water heater, hot water is created when the refrigerant is pumped through the system. The refrigerant transfers heat through the air to the water in the tank. By taking the liquid refrigerant to pass through an evaporator, the system takes heat from the air to make refrigerant become gas form.


After that, the gas is compressed in a compressor using electricity. When the gas is compressed, the temperature of the gas goes up. As a result, it becomes hotter than the liquid that is in the tank. Once it becomes hot, the gas goes into a condenser. And once it turns into a condenser, it passes its heat to the water and reverts back into a liquid.


Due to the different sizes of heat pumps, a customer must decide how big a heat pump is needed, for example, heating capacity. This article will help figuring out how heat pumps sizes are measured, why heat pump size matters, factors influencing heat pump size, and how to calculate heat pump sizes so that customers have a deeper understanding of how big a heat pump they require.

what size heat pump do you need


How Are Heat Pump Sizes Measured?

The size of heat pumps is usually measured by kilowatt. Heat pump manufacturers often provide a variety of kilowatt sizes that aim at meeting the needs of different customers. Kilowatts refer to the heating output of a unit, also called heating capacity. The larger a room  the higher heating capacity the heat pump needs to be able to output. If you do not select the correct size, the heat pump might no be able to run efficiently and effectively to provide hot water, house heating and cooling. For customers living in cold climate, they may also require a heat pump with higher heating capacity, compared with those living in warm climate.


Why Does Heat Pump Size Matter?

There are many reasons why heat pump size matters. If the size of a heat pump is too big for the home or building, it will run in either a concise cycle. The unit will run in a fast cycle due to the size of heat pump being too large. As a result of both concise and fast cycles of heat pumps being too large, the heat pump motors deteriorate over time. If the heat pump size is too small, the heat pump will run repeatedly. It will do this in order to match temperature needs. Having the right size of heat pump is essential to ensuring that the heat pump will function properly.


The results of oversized heat pumps can have negative effects on the home. A problem that can arise with a heat pump that oversized is the temperature in room going up very quickly. This can cause the people in the room to become uncomfortable due to the rising temperature in the room. When the oversized heat pump room temperatures rises up, the heat pumps will be utilizing its consumption mode. Another issue with oversized heat pump is that it can freeze completely.


This can occur in areas where it is very frigid and cold. As a result of the oversized heat up freezing, it can turn the heat pump off completely. As a result of the pump being shut down, the room temperature has to wait to drop. When it does, pump starts going through its cost cycle again. Another issue with the oversized heat pump freezing in winter weather is that it will not be able to go onto a defrosting cycle. When it is not in the defrosting cycle, ice will show up on the outside unit. This will cause the airflow to be severely restricted. As a result of the airflow being restricted, the motor becomes burnt out. Another result of the heat pump failing to defrost is that the ice can reach the internal parts. When this happens, the fan blade can become broken.


In undersized heat pumps, the heat or cool air is not going to properly enter the room as it is. As a result of this, the heat pumps need to struggle to provide heat or cool air into the rooms. Health problems can occur as there is low humidity caused by undersized heat pumps. The health issues that are caused by this are chronic dry skin, chapped lips, scratchy throat and itchy nose. Moreover, having undersized heat pumps is not a good investment. Undersized heat pumps operating in the home, the energy bills that arrive in the mail or via online each month to the inbox will be high. The reason for undersized heat pumps causing energy bills to go up is because it is using more electric power, wasting a lot of energy. 


Factors Influencing Heat Pump Size

There are various factors that can influence heat pump sizes. One factor is the size of the home. If the home is large, a heat pump with higher capacity will work. In addition to this, the number of rooms that are in the house can influence the heat pump sizes. An example would be that a backyard lounge would be heated longer. If heat pumps are used for heating bedrooms, the heating time will be shorter. Similarly, in the case of a home with multiple floors, large heat pump sizes work.


Heat insulation of can also affect how big a heat pump you need. For example, if your house has a lot of windows, the thermal insulation will not be that good. That is because, a home with too many windows might result in a lot of heat getting outside. Thus, Large heat pump sizes can work well in home poorly insulated. If a home has no windows or few windows, small heat pump sizes can work too.


Another factor that can influence heat pump sizes is the climate. In moderate climates of moderate wind and rain, small heat pump sizes can work. This is because it uses outside air. In extreme climates, large heat pump sizes can perform well. Extreme climates are severe, unseasonal, and unexpected. In winter months, frost and ice can build up on the heat pump. As a result, the heat pump efficiency can shrink due to the colder temperature. The temperature inside the condenser and heat pump outlet can go down due to the fact that the heat pump is cold. During the warm seasons, the heat pump efficiency remains the same due to the temperatures outside the home changing steadily over time. An example of a heat pump that has large heat pump sizes and performs well in extreme climates is a geothermal heat pump. But due to its more complicated installation, you can go for a DC inverter heat pump that is able to run efficiently even in cold areas.


The population of the home can also influence the heat pump size as well. If there are more people in the home, the heat pump uses more heat. This is due to the fact that it means more heating output required to provide enough volume of hot water and heat consumed by the family. If there are less people, you can just choose a smaller heat pump.


How to Calculate Heat Pump Sizes

Heat pump sizes can be calculated. The heating capacity of heat pumps depends on a variety of variables. These variables include the local climate, how many individuals are in the home, the size of the rooms, the age of the home, etc. In order to calculate the heat pump size, you need to calculate the room's volume in cubic meters. The cubic meters calculated will be multiplied by 44 watts. When you get the watts number, you add a percentage like 10% to any large windows. You can also add further 10-20% percentages for windows that have partial or no insulation. After this is done, you multiply the figure above by 1.5. 1.5 is for the living areas, 1.2 for bedrooms and 0.8 for other areas of the home.


Instead of a simple formula, it is actually more complex to size a heat pump since there are some other variables. If you are not expert in this field, we recommend you ask an experienced heat pump installer for help. These professionals will take most of the variables into consideration. They will mention every detail that you should know while choosing the right heat pump size.

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