how can i keep my house warm in the winter?
user
Your house is warm right now, and even cooler air will radiate back towards you.  I recommend using fire or fireplaces to keep you warm on cold winter nights.
assistant
that's a good idea. Anything else?
user
Wear warm clothing when you go outside, especially in cold and/or wet weather. You can use other home heating appliances or a furnace to get warm.  Be mindful of your water heater, you may need to turn it up to higher temperatures if the home is at least 15°C/59°F.  Make sure your bedroom has proper temperature settings to keep you warm and your walls insulated and dry.
assistant
how can i keep my house warm in the winter?
user
Your house is warm right now, and even cooler air will radiate back towards you.  I recommend using fire or fireplaces to keep you warm on cold winter nights.
assistant
that's a good idea. Anything else?
user
Absolutely. Check out this book.  It's a classic:

http://www.amazon.com/Fire-Place-How-Start-Buy/dp/0679716866
assistant
how can i keep my house warm in the winter?