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  4. Heat Pump for Heating Swimming Pool...

Heat Pump for Heating Swimming Pool

A heat pump is a device that uses a small amount of energy to move heat from one location to another. The heat pump used to heat the pool transfers heat from the outdoors to the water. Because they use already available heat and transfer it from one place to another, they use less electricity.


The working principle of the heat pump pool heater

When the pool water circulates through the pool pump, it passes through the filter and the heat pump heater. The heat pump heater has a fan that sucks in outside air and directs it to the evaporator coil. The liquid refrigerant in the evaporator coil absorbs heat from the outside air and becomes a gas. The hot gas in the coil then passes through the compressor. The compressor adds heat to produce very hot gas, which then passes through the condenser. The condenser transfers heat from the hot gas to the cooler pool water circulating through the heater. The heated water is then returned to the swimming pool. The hot gas returns to a liquid state as it flows through the condenser coil and returns to the evaporator, where the whole process begins again.


Compared with the reciprocating compressor of a standard unit, the more efficient heat pump pool heater usually uses a scroll compressor.


As long as the outdoor temperature stays above 45ºF-50ºF, the heat pump pool heater can work efficiently. The colder the outside air they suck in, the lower their efficiency, which leads to higher energy bills. However, since most people use outdoor swimming pools in warm and mild weather, this is usually not a problem.


Advantages of heat pump pool heat pump

1. With one of the world's highest coefficient of performance (COP) ratings, heat pumps are 15 times more energy efficient than other technologies on the market.

2. Compatible with solar photovoltaic

Heat pumps can be used in combination with other third-party products such as solar photovoltaic panels, making our heat pumps more energy-efficient, smarter, and more reliable to replace solar thermal pools for heating.

3. Heating and cooling

Our heat pump is equipped to automatically heat or cool the pool water according to the temperature you set-so you can ensure that your pool is always at the temperature you want!

4. Automatic defrost

Automatic defrosting technology provides intelligent automatic defrosting, so that the heat pump can work at ambient air temperatures as low as -7°C.

5. Titanium heat exchanger

The titanium threaded heat exchanger ensures maximum heat transfer and has extreme corrosion resistance. Compared with standard heat exchangers, the heat transfer efficiency is increased by up to 30%!

6. Environmentally friendly refrigerant

The heat pump uses environmentally friendly, safe, and ozone-free R410A refrigerant.

7. The latest anti-corrosion technology

The hydrophilic coating on the condenser fins is the latest anti-corrosion technology, allowing your heat pump to maintain high efficiency for many years to come.

8. Electronic expansion valve technology

Electronic expansion valve technology is the absolute latest and best refrigeration control system on the market today. Compared with other commercial heater brands, this results in a higher COP and an efficiency improvement of up to 20%.

9. Smart phone application

The app is free to download for your iOS or Android device. Now you can control your pool heater from anywhere in the world. Ready, warm and waiting for your arrival.


Heat pump pool heater size

You should ask a well-trained pool professional to perform an appropriate sizing analysis for your particular pool to determine the size of the pool heater.


The size of the heat pump pool heater involves many factors. Basically, the size of the heater depends on the surface area of the pool and the difference between the pool and the average temperature. Other factors also affect the heat load of outdoor swimming pools, such as wind exposure, humidity levels, and cool night temperatures. Therefore, pools located in areas with high average wind speeds, low humidity and cool nights on the pool surface will require larger heaters.


The rated power of the heat pump pool heater is Btu output and horsepower (hp). Standard sizes include 3.5 hp/75,000 Btu, 5 hp/100,000 Btu and 6 hp/125,000 Btu.


To calculate the approximate heater size of an outdoor swimming pool, follow these steps:


1. Determine the swimming pool temperature you want.

2. Determine the average temperature of the coldest month of the swimming pool.

3. Subtract the average temperature of the coldest month from the required pool temperature. This will provide you with the required temperature rise.

4. Calculate the pool surface area in square feet.


Use the following formula to determine the heater’s Btu/hour output requirement:

Pool area x temperature rise x 12


The formula is based on a temperature rise of 1º to 1-1/4ºF per hour and an average wind speed of 3-1/2 miles per hour on the surface of the pool. For 1-1/2ºF rise, multiply by 1.5. For a rise of 2ºF, multiply it by 2.0.


Determine the efficiency of the heat pump pool heater

The energy efficiency of the heat pump pool heater is measured by the coefficient of performance (COP). The higher the COP number, the higher the efficiency. The federal testing program for heat pump pool heaters sets the test conditions to 80ºF ambient dry bulb, 63% relative humidity and 80ºF pool water. The COP is usually between 3.0 and 7.0, which translates to an efficiency of 300%–700%. This means that for every unit of electricity required to run the compressor, you can get 3-7 units of heat from the heat pump.


Installation and maintenance

The correct installation and maintenance of your heat pump pool heater can optimize its efficiency. It is best to ask qualified swimming pool professionals to install heaters, especially electrical connectors, and perform complex maintenance or repair tasks.


Read your user manual for maintenance plans and/or recommendations. You may need to adjust your pool heater every year. Since heat pump pool heaters have many moving and electrical parts, they may require regular maintenance by air conditioning technicians.


With proper installation and maintenance, heat pump pool heaters can be used for 20 years or more.


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