This will be our first winter in our townhouse and we just had a baby so getting the temperature right is a concern. All of the bedrooms are on the top floor and are much colder than the rest of the house. (4 or 5 degrees.) Our furnace has two vent systems leaving it, one for the upper part of the house and one for the lower.

My understanding is that in the summer, we should close the lower vent system so the cool are is pushed up. In the winter we would do the opposite so the warm are is pushed down - and will naturally rise up to heat the upstairs.

My question, since the hot air does not seem to be getting upstairs very well, does it make sense to leave the vents in the "summer" position which should be forcing more of the warm air upstairs?

Thanks for your input!