Features of EVI air to water (air source)heat pumps: 

It applies A low-temperature heat pump system enthalpy-increasing auxiliary circuit control method, a low-temperature heat pump system and its enthalpy-increasing auxiliary circuit structure belong to the technical field of refrigeration air-conditioning and low-temperature heat pumps. It solves the problem of high cost and complicated control of the existing electronic expansion valve and thermal expansion valve, and the use of a single capillary tube method cannot solve the problem that the high exhaust gas under the extreme working condition of high compression ratio may easily cause an alarm. The enthalpy-increasing auxiliary circuit structure in the low-temperature heat pump system includes an economizer.

The economizer main circuit inlet on the economizer and the external water-side heat exchanger, and the economizer main circuit outlet and the external air-side heat exchanger are separated from each other. One-by-one sealed connection and so on through the main line. The advantages of the low-temperature heat pump system's enthalpy-increasing auxiliary circuit control method, the low-temperature heat pump system and its enthalpy-increasing auxiliary circuit structure are: it reduces the production cost due to the use of electronic expansion valves and the logic control is simpler, while reducing the high temperature caused by the use of a single capillary tube. Probability of alarming when the exhaust gas is too high under the extreme conditions of compression ratio

EVI air source heat pumps are designed for domestic/commercial hot water and house heating in cold areas where lowest air temperature is above -25℃.

The casing of the unit is made of stainless steel anti-rust and anti-corrosion material, which is durable, double-layer aluminum foil fins for efficient heat dissipation and rapid defrosting.

The main engine adopts air supplementation and enthalpy technology, which can operate normally at -30°C and good heating effects in winter.

Imported electrical components have a failure rate as low as 0.1%. The unit uses a special compressor for ultra-low temperature heat pumps with a service life of more than 15 years.
 

Company introduction:

Leomon technology rnjoy rich experience in supplying air source heat pumps, supply its own brand and OEM for customers worldwide. Keep working at technical and commercial ability, company is athorized over 300 patents, norminated factory for supplying heat pumps.

Quality Control:

100% products inspection before delivery, 3 phrases test to guarantee right quality and quantity before delivery

Whole lifespan after sale service