Hello Canada!!
would love to see a photo of your Cat House! Mine is plastic thingy (thats a technical term btw
) with a cat flap on the front. it doesnt appear to suffer extreme condensation, how it has only a small fleece to sleep on. The warmer it is inside & the colder it is outside the more condensation there'll be.
Maybe only switch on the heated pad on extreme coldness? or use it for a small while?
Please note: I may not truely know what I am speaking about - just guessing
lol
you can just see my cat house outside on this photo - I only got one as unfortunately I dont have anywhere to fit a Cat Flap. Not that my cat (also in photo) uses it. Was more popular with my other cat who loved it x