The answer to 'what is humidifier' is a device that adds moisture to the air in your home. Humidifiers work by converting water into a fine mist or vapor and dispersing it into the air, increasing the humidity levels. This can be especially beneficial during the dry winter months when indoor air tends to be drier.
Humidifiers come in a variety of sizes and styles, from small tabletop units to whole-house systems that integrate with your HVAC system. They use different technologies like evaporative, ultrasonic, or steam to add moisture to the air. Choosing the right humidifier for your home depends on factors like the size of the space, your humidity needs, and your budget.