Ive had the heat zone kit installed on my fire place and I don't get much heat out of it. I have 80 to 90 degree temps coming out of it and not sure if this is normal. I have 5-6 ft of pipe before the fan unit which is installed directly below the fire place in the basement. Basically I'm just wondering if i can capture more,heat somehow or if thats all I'll get out of it. Thanks!