Honeywell HM509H8908 TrueSTEAM Humidifier comes with manual humidistat and will support up to 2500 Square Foot Coverage. The HM509H8908 replaces the Honeywell HM509VPIAQ humidifier.
Honeywell's HM509H8908 TrueSTEAM Humidification System offers the most reliable, efficient levels of moisture because it operates independent of equipment operation, which allows it to deliver a new 1:1 humidification delivery rate. It also allows you to maintain the most comfortable humidity levels automatically. Proper humidity with a Honeywell HM509H8908 TrueSTEAM humidifier offers a more comfortable living environment at a lower temperature which will allow you to turn down your thermostat for energy savings.