My furnace is in my attic and I have had an issue with huge ice cycles for years. A few years ago I had the vent pipes wrapped (no help) this year I had a new furnace installed (still no help) I called Randy at Tri County to see if he thought blown in insulation would help. He said he would do his best to solve the ice build up issue and guess what....he did. I should have called him 1st as I would have saved alot of money. He and his crew went above and beyond finding and fixing other issues that were associated with causing the ice cycle and ice back up problem. The price was reasonable, the service was prompt and the results are far beyond what I had expected. Thank you again Randy for an excepional job! Donna.....Madison, Ohio