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Grateful for You. Happy Thanksgiving!
This Thanksgiving, our hearts are full of gratitude. We are reflecting on the past year and the incredible collaborations we've shared with you.We are thankful not just for the business, but for t...
2025/11/25
Holiday Notice for National Day
National Day Holiday NoticeDear Valued Customers,We hope this message finds you well.As the National Day of the People's Republic of China approaches, we would like to inform you of our holiday schedu...
2025/09/28
Does the heat-exchange core need to be replaced?
The metal heat-exchange core does not need replacement. For maintenance, wash it with tap water every 3–6 months depending on local dirt levels and usage frequency.
2025/09/19
Is a water-seal trap required for the condensate drain?
No, because the unit operates with positive-pressure air supply.
2025/09/19
What is the controller model?
The factory-supplied standard controller is used.
2025/09/19
Can it connect to the other brand APP for remote control?
Connection to the other brand APP is not currently supported. However the unit has an RS-485 communication port for smart-home integration.
2025/09/19
What is the operating status of the unit?
The air system runs in the selected mode, and humidity is automatically sensed and controlled to the set point—starting and stopping as required.
2025/09/19
What is stated about filter life and performance?
A run-time counter is provided (factory default 1,440 hours). Filters should be replaced when the timer alerts. Three filter stages are included: primary G4, secondary F7, and high-efficiency H13. Sin...
2025/09/19
What are the maximum lengths for supply and return ducts?
Model 300: 10 m; Model 400: 15 m; Model 500: 18 m. The return duct is recommended to be about 3 m; centralized return air is advised (each room can use transfer grilles to the return-air zone).
2025/09/19
Is the combined length of return and supply ducts a recommendation or a hard requirement?
The length must not exceed the stated value; otherwise, the compressor may trip on pressure protection under extreme conditions. If the length is much shorter, noise can increase.
2025/09/19
Where should the controller be installed?
In a sheltered indoor location, protected from rain and direct sunlight, and easily accessible for operation.
2025/09/19
What are the temperature and humidity ranges for dehumidification operation?
Temperature: 5 – 41 °C; Humidity: 45 – 99 %. Factory default: 50 %.
2025/09/19
What is the supply air temperature in dehumidification mode?
The supply air temperature is higher than ambient; the indoor temperature rises by about 3 – 4 °C above ambient, depending on conditions.
2025/09/19
What criteria are used for equipment selection?
Dehumidification capacity, fresh air volume, supply air volume, and applicable area—refer to each model’s specifications. The combined length of supply and return ducts must not exceed the limit for...
2025/09/19
In total-heat-exchange mode, is any air recirculated internally? What percentage?
Some return air is recirculated internally—about 50 %.
2025/09/19
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