[req] Support for defining a humidistat to control a humidifier

[dekimsey]

First off, props to the project this was a really easy integration to use. The config flow was really well done! Very cool!

tl;dr It would be neat if the project could support alternative climate devices to create a humidistat and not just temperature. It may be out of scope, but it would be great!

Problem: In my case, I needed a way to control a dumb humidifier because with winter let's just say my sinus's aren't well adapted to this 36% humidity at night. But if I leave it on, the humidity is usually too high by morning. A set-point type climate control is exactly the behavior I want, just for humidity not temperature.

Solution: versatile_thermostat's over_switch thermostat with inputs from my a humidity sensor in the room.

Implementation Details (switch, sensor, humidifier)

I was able to do this by simply configuring an over_switch to:

• switch.humidifier
• sensor.bedroom_humidity
• sensor.bedroom_last_seen
• sensor.xxx_outdoor_humidity
• sensor.bedroom_motion_detection
• sensor.phone_presence

Corresponding to:

• dumb humidifier (Honeywell Cool Moisture Humidifier, HCM-350. This has 3 fan modes, I just leave it on high)
• smart switch (Zigbee, Sengled E1C-NB6)
• a humidity sensor (Z-Wave, AEON Labs MultiSensor 6 ZW100)
• a weather sensor for outdoor humidity (NOAA)
  Enabled Optional:
• a motion detector (same multisensor device)
• presence sensor (me, cellphone's HA app)

It works well enough, but it sure does look a bit silly.

Related:

• Add humidity sensor/attribute to climate entity #633

PS: After setting all of this up last night and being very pleased with the effect this morning (sinus's hurt significantly less). I learned there is native support in HA via generic_hygrostat, so I'll try that too. But I suspect the algorithm here is much better, and I particularly like the rate sensor anyway.

[jmcollin78]

Hello,

Out of the box, you can control the on/off with a switch. But all algorithm are made for temperature. Not sure how they will behave with humidity. And like you notice it, all displays are made for °.