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EVI Low Temperature Heat Pumps

EVI air source low temperature heat pumps absorb low-grade heat energy from the air to provide domestic/commercial hot water and space heating. They can also function as cooling devices in summer. These cold climate heat pumps are developed using the Enhanced Vapor Injection (EVI) compressor technology and high-efficiency eco-friendly refrigerant, which ensures that the units can work normally at as low as -25℃ and supply heating in cold areas.

As one of the cold weather heat pump manufacturers, SPRSUN provides the best split type EVI low temperature DC inverter air source heat pumps for sale. 



EVI Low Temperature Heat Pumps



  • How Does Heat Pump Work in Cold Weather?

    Heat pumps operate by using a process known as heat transfer to drag heat from the outside into your household or office. 
    They operate like a reverse fan during the winter or cold climatic seasons; they transfer heat instead of generating heat. Once the refrigerant loses pressure, it becomes a vapor, meaning it gets colder compared to the outside temperature. According to the 2nd Law of Thermodynamics: heat flows from hot to cold. Therefore, the refrigerant draws in heat from the ambient air outside. Once it absorbs all the heat required, the outside compressor pressurizes the gas to form a hot liquid. After which, the hot refrigerant liquid travels to the indoor coils, whereby the coils and blowers allow the heat to be released into your duct system. When it's cold outside, you might think there is no heat to absorb, especially during winter. Fortunately, heat still exists to be harvested, even in shallow temperatures of about -15° C/5° F.
  • How Low Temp Will Heat Pump Work?

    Heat pumps work best at 12 degrees Celsius and above. Many will continue to work and shut down when temperatures drop below a range of 0 degree. Most are designed to shut down at this temperature range to protect the heat pumps from overworking. It also helps to avoid lasting damage to the internal unit of the heat pump. They lose efficiency and use more energy to run at temperatures lower than 0 degree. However, engineers have designed advanced cold weather heat pumps, with heat pumps gaining popularity. These ice breakers can work at extremely low temperatures such as -25°C.

  • How Efficient Is A Heat Pump in Cold Climate?

    Heat pumps are considered to be the most energy-efficient and environmentally-friendly heating option for households or offices. A regular modern heat pump operates at high efficiency, even below minus 25 degrees C. When the outside temperature drops below this temperature, the operational efficiency of the heat pump decreases. Heat pumps are designed to work well in areas with cold climatic conditions effectively. Purchasing a heat pump is a good investment for you; it will help you save on your energy bills and promote a friendlier environment. Under proper maintenance and care, a heat pump is very durable compared to other means of heating. It can go for more than 15 years providing effective services.
  • What Heat Pumps Work Best in Cold Climates?

    Split type EVI DC inverter heat pump is regarded by many as the best type of heat pump for cold season. The main reason is that it uses the Enhanced Vapor Injection technology rotary compressor and works stably in cold weather. Also, the split model design can better avoid freezing problems. The system will implement automatic anti-freezing protection by detecting system water temperature. Currently, many households use air-source type of heat pumps for their heating or even cooling capabilities.
  • What Is EVI Heat Pump?

    EVI stands for (Enhanced Vapor Injection), is an inverter heat pump that is somehow low ambient. The heat pump utilizes EVI technology which can operate under extremely low temperatures of about -25℃. It draws energy from ambient air, uses it to provide heat to your house. An EVI pool heat pump utilizes a smaller inner plate heat exchanger known as an Economizer. This unit is found in the refrigeration cycle, and it uses a bypass valve to bypass hot refrigerant vapor on the condenser to the HX. Heat energy is then exchanged, increasing the gas temperature much more, after which it is injected into the head scroll at mid-range pressure via a separate injection port.
  • How Cold Is too Cold for Heat Pump?

    All heat pumps have their limits, while some may push the boundaries of cool temperatures. Contrary to people's beliefs, heat pumps work great even in very cold seasons.
    They can operate in low temperatures with double the efficiency of standard or gas heating, like electric furnaces or baseboard heaters. Heat pumps don't directly pump air: they use the heat from the surrounding air and utilize it to warm your home. 
    However, a marginal difference in thermal energy makes a significant difference in its efficiency. To counter this drawback: heat pumps need to work harder to maintain a similar indoor temperature. It's because of this reason that heat pumps begin to lose their effectiveness at about 40 degrees F and reduce the efficiency much more at about 25 degrees F.
  • Can You Use A Heat Pump in Cold Climates?

    The typical answer is yes; a heat pump will work in the cold climates or any weather. As a matter of fact, heat pumps were designed to keep you warm during the cold seasons. They provide an energy-efficient means of heating to other heating sources like air conditioners or even furnaces, especially in the cold climates. During winter seasons, heat pumps operate by transferring hot ambient air from the surrounding environment, which is then passed into its unit and undergoes various processes. The final output provides comfortable temperatures into your own home to get you through those harsh winter climates.



  • Can Air Source Heat Pump Heat a Whole House?


    Probably you have been once deluded about a ductless heat pump requiring air handlers, or "heads," in each room. That's not the case, however. Dependent on the home's structural envelopes & air movement, a single head unit will potentially heat a 1500 sq. ft house. However, old buildings with furthe Read More

  • What Is a Heat Pump Boiler?


    Heat pump boilers heating pumps that integrate both a boiler and an air source of a ground source heat pump. This equipment works conjointly. But the gas or oil boiler only supplements the heat pump when the heat generated is inadequate. Thus, the unit automatically switches between the heat pump an Read More

  • What Are the Disadvantages of Air to Water Heat Pumps?


    Heat pumps use a compressor and a revolving system of liquid refrigerant. This transfers heat from one location to the other. Warmth is taken from pools or water sources and then circulated indoors.These pumps have several benefits for your house. They consume less energy as they do not use electric Read More

  • How Does a Split Heat Pump Work?


    A split-system heat pump is a technology that transfers heat from one location to another using a network of pipes, vents, and other components. It functions similarly to a standard central heating system. Instead of a single boiler, the system transfers heat from the outside unit to the inside unit Read More


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