Two way flow mute fresh fan


360 degree ventilation

Circulation and relaxation of oxygen, no need to open windows to enjoy fresh air

Super Silent

CDF air duct design + DC motor, larger air volume, lower noise

Oxygen enriched fresh air

Introduce fresh air 24 hours, and replace indoor dirty air to make indoor air more comfortable

Two way flow mute fresh fan参数

Product model SXD-220   SXD-400 SXD-550 SXD-800 SXD-1000 SXD-1300 SXD-1800     SXD-2000
Air volume(m3/h) 220 400 550 800 1000 1300 1800 2000
power(W) 40 80 125 320 360 380 420 610
noise(dB(A) 23 25 26 33 35 38 40 43
Maximum static pressure(Pa) 90 110 180 220 340 350 420 610
Power Supply 220V/50Hz
Waterproof grade IPX4
Tuyere diameter(mm) 100 150 200 250
weight(Kg) 9 12 30 35 40 43
Product size (length * width * height mm) 430*440*205 430*595*245 540*675*280 565*735*315 950*760*390

● the unit adopts fingerprint resistant plate design, with beautiful appearance;

● 360 ° three-dimensional super strong air exchange, exhausting the polluted air from the room and continuously introducing clean fresh air into the room;

● centrifugal fans and motors with high performance and low noise shall be used, and sound-absorbing insulation materials shall be used for the inner wall of the box to ensure smooth operation and minimum noise when the air volume and static pressure are high.

1. The company reserves the right to change the parameters and appearance. The products are updated continuously. Please refer to the actual products and product nameplates. Any change is subject to no notice;

2. Executive Standards of the equipment: GB / t1236-2017, gb4706.1-2008, gb4706.32-2012;

3. S represents two-way flow pipe, X represents fresh air exchange, D represents ceiling type, number represents air volume, DC represents DC (AC omitted)


1. Please contact the manufacturer or professional personnel to replace and clean the filter screen according to the unit cleaning tips;
2. In case of any unit failure, please contact the manufacturer or the sales and installation unit, and do not repair by yourself;
3. In case of water leakage, please disconnect the power supply of the machine and contact the manufacturer or the sales and installation sheet for maintenance;
4. Parameters, dimensions and other changes caused by product upgrading of the company shall be subject to the actual product and product nameplate, and will not be notified in case of any change.

Matters needing attention

1. Please arrange special power line for the machine to supply power;
2. When the machine is stopped for a long time, please unplug the power supply;
3. Please construct in strict accordance with the requirements of construction standards to ensure smooth drainage;
4. It is forbidden to wash the machine directly with water or wipe the machine with wet cloth when it is electrified;
5. It is forbidden to install the machine in the space of heat source, inflammable and explosive, acid and alkali, salt, paint and glue.


1. Failing to provide invoices, receipts or shopping vouchers;
2. Machine damage caused by natural disasters or human factors;
3. Damage caused by exceeding the scope of use or installing or dismantling the machine without permission;
4. Machine damage caused by abnormal supply voltage or wrong wiring;
5. All rights of interpretation belong to Ningbo tengkong New Energy Technology Co., Ltd;
6. The machine is damaged due to improper installation or use in accordance with the instructions.

service commitment

Product Three Guarantees: the whole machine is guaranteed for three years, and the lifetime maintenance warranty period is calculated from the date of invoice After sales service: 24-hour response in Jiangsu, Zhejiang and Shanghai, 48 hours arrival in other areas (except Xinjiang, Tibet, Qinghai, Inner Mongolia) 24 hours response and telephone guidance, 72 hours in place Price system: all parts and components, value-added services, unified national price