Originally Posted by
Splashone
Blame it on on the stove if it makes you feel better but the answer is in the relative humidity outside and hence inside your house. Go to the national weather service and compare today's RH to July's. Warmer air simply has a greater capacity to hold things in solution, including water.
As a reality check, What does a water "restoration" company ask you to do after a water leak? Turn on the A/C. Why do A/C units have a discharge for condensate? Does your heater? No, because with heat, water stays in solution in the air.
So your heater is doing all it can to keep your air moist but it can not overcome the seasonal effect of drier air during the winter.