The "dry and cold" in the north cause indoor dryness, and the human body is prone to sore throat, nasal bleeding, and other symptoms. At this time, you need a humidifier to solve your problems.
The humidifiers are divided into ultrasonic type, evaporative type, electrothermal type, and composite type according to the humidification mode. At present, there are two popular humidifiers on the market: ultrasonic humidifiers and evaporative humidifiers. The former is a common way to spray water mist through ultrasonic atomization. It is relatively cheap, with a small humidification area and obvious humidification effect, but it is easy to leave water stains. Therefore, distilled water or purified water is preferred. The latter is a popular product in the past two years. It uses the cold evaporation method to blow out the water by using the fan inside the machine. The humidification range is larger and the price is relatively higher. The filter device inside the machine needs to be replaced regularly.
Shopping Guide
Pay attention to the following points when purchasing:
1. The greater the humidification amount, the better the humidification effect (40%~60% relative humidity is most suitable for the human body);
2. Try to consume the water in the machine at one time to prevent the remaining water from deteriorating and affecting health;
3. The humidifier with a filtering function shall be selected as far as possible to prevent impurities in the water from diffusing with the humidified air and affecting human health.