Wind dust-free fresh air system in general is still relatively good, you can refer to the following points:
1, silent: sleep environment is relatively silent.
2, power saving: low energy consumption, environmental protection, energy saving heat exchange.
3, continuous use, equipped with an electric heater, -10 degrees can still be continuous air exchange.
4, intelligent: high-end LCD controller, optional intelligent control system, real-time monitoring of PM2.5 concentration.