My wife and I were very excited when the temperature finally plummeted on Saturday here in Northern Virginia. We turned off the furnace, stoked up our newly installed Lopi Declaration and it started pumping out the heat. As I feared, however, the layout of our house is far from optimal. The living room, where the insert is installed, is nice and toasty. I came in once and found our cat on her back with her belly pointing towards the fire. Our kitchen, however, which is on the other end of the house was down to 55 degrees by Sunday morning and there seemed little I could do to warm it up. I turned on the blower in the forced air a/c system to try and redistribute the heat but was disappointed in the results. Using an indoor/outdoor thermometer I stuck the outdoor temperature probe into the duct. The temperature did seem to change based on how hot I was running the Lopi but the range was on the order of 59 to 61 degrees! Still too cold. Two other rooms were also very cold. Ignoring for the moment the placement of vents and feeds, what kind of results have folks had with insulating their ductwork? Much of our ductwork is standard uninsulated sheet metal that runs through our accessible, but unfinished basement which is typically in the 55 degree range in the winter when the furnace isn't running. I'd have to get out a flashlight to check on the runs through the crawlspaces. I would expect to see some improvement by insulating, but can I expect to see a significant improvement?