Upstairs always cooler than downstairs - forced air
I live in a 2-level towhouse that has forced air. The bedrooms upstairs are always cooler than downstairs, and I have had to purchase space heaters to warm the rooms during the winter. Does anyone have any suggestions (besides the space heaters) on how to get warmer air upstairs? I'm thinking that I might have to add another zone (someone told me that I only have one), but it sounds expensive.
Thanks in advance.