Hi
@lindisfel
I didn't understand electrical desiccant humidifiers until a friend explained. She has no central heating in her house, but needed to dry her washing.
This is the one she has.
I chose a different one with different specs for my needs, and it's sold out now. It says it works at 1C.
It is 7C tonight in my bungalow, so I am about to test this
I needed one that had laundry mode as well, on the one I choose apparently it makes quite a bit of heat, which some reviewers found bad for the summer. But I already have three conventional dehumidifiers for the summer so I was delighted to pick this one. I'm about to test it out fully now as I have just done some hand washing.
My friend explained how much it could actually raise the surrounding temperature of the area it was operating in. It is only the one that is labeled a desiccant humidifier that will raise the temperature this much, the conventional dehumidifier does not do this.
Here is a bit of blurb online that I found that explains it the way my friend explained it.
"A desiccant based dehumidifier draws the air in from the room over a filter and passes it over a rotating wheel that is full of a desiccant material called Zeolite which absorbs the excess water out of the air. The wheel is now saturated and needs to be regenerated. A heater in the base of the dehumidifier works with a second fan to draw the moisture out of the wheel. The warm, humid air is blown into a condenser where it turns into water and drips into the dehumidifiers tank. The warm, dry air is now blown into the room and the heat used during the drying process is mixed with the dry air to ensure that the air that comes out of the dehumidifier is not just drier but 10-12°C warmer than the air that came in."
My friend said her desiccant dehumidifier raised the surrounding air up by 17C
I find that hard to believe. But if this model can raise the surrounding air by 10C I will be highly delighted.
I still have my old heaters to try out, but I will try those tomorrow. ..
All the best