Stylies Orion Evaporator Humidifier, 18 W, 6 liters, White

I used to have a Boneco Air washer humidifer, which claimed to output up to 400g of water an hour. The room gets very dry in the winter due to having a wood burner and a central heating radiator going. The air washer empied at the rate of 1L an hour or more. It stopped working after 2 winters, so I decided to buy another brand to replace it. The Orion claims to output up to 350g of water per hour and they say it is suitable for rooms up to 50M2. The room is more like 60M2, but as I keep 2 pans of water on top of the wood burner, I expected this to be powerful enough. Although it is running 24/7, when I top it up every evening, I am lucky if it takes another 3L of water, which makes the output more like 125ml an hour. Very disappointed. I am looking for another humidifier, I was previously looking at the Stadler Form Oskar Oskar Big, but as they take the same evaporation cartridge as this, it is unlikely they will be any better. I would buy another air washer type, but aprt from being expensive, they take a lot of cleaning an descaling.