I just purchased a home that was built in the late 70's. It has a nice looking wood burning fireplace upstairs that I'd love to use this Winter. I had it inspected and swept and have burned in it once. However, there are 4 grills, one in each corner that I assume are some kind of heatilator system. The bottom two house some black blowers that look similar to hair dryers which are connected to some aluminum hoses. The hoses run only about 1 foot alongside the firebox which is steel (no rust). When I flip the switch on, the blowers do run and push air through the hoses but no air is coming out the top vents. I guess my question is how can I make this work? And, do the hoses need to be running all the way to the top vents? Any advice or knowledge would be greatly appreciated.[GALLERY=][/GALLERY]