FOLLOW UP AND FINAL (?) SOLUTION
I ended up spending money on
THIS HUMIDIFIER in the most powerful 220V option.
Installation was no joke as it involved mechanical, electrical, plumbing and even I had extra drier plug close to the furnace, the humidifier had different plug and no adapters available, so I ended up installing additional outlet.
But finally I can get house to humidity level I like.
Annoying is that such expensive humidifier has controls dated from last Century.
Furnace mounted unit, with relay starting furnace blower can't be timed with furnace cycling.
Than automatic dump valve dumps water every 1.5 hr no matter what.
Sometimes it can be boiled water, often it will dump water when humidifier is not used.
I am planning to buy those electronic WI-FI timers and relays to add more options to the system.
I keep tis table-standing units for camper use.
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