There is NO way I'd keep ducks in my house! With how messy ducks are it'd look like something off that Hoarders show in a few weeks.
It's hard enough to keep the house clean with an 80lb lab roaming around all day!
The coop I have for my ducks is insulated and heated. I keep it around 45*. I just use a 1500w heater and a line voltage thermostat. It runs maybe an hour or two a day, depending on the temp outside.
It's not quite as cold down here, but still I don't think the ducks would last for very...
I use a chicken waterer (like this one https://www.backyardchickens.com/products/1-gallon-poultry-waterer) and put a lid for an old rubbermaid bin underneath.
I'm not sure what temp the ducks would be ok outside? Right now it's fairly warm at 10*, but 50-60mph winds. Earlier this week we had...