It’s been about one year since we had our Quadra fire 7100 wood burning fireplace installed in our new home. We are very pleased with the appearance and function of the unit. Our heating bill averaged only about $100 per month in a 2700 sq. ft. home due to the heat put out by the fireplace. I suspect we could have reduced it even further had we been more diligent in burning. Another bonus is the minimal smoke produced by the fireplace since it is reburning its own smoke…you can barely see any evidence the unit is burning from the outside which is great for the environment! This fireplace is one of the best features we included in the design and construction of our home.