Hired Owensboro Insulators LLC to remove the old insulation in my house and replace with new. In addition, we had a new process called Aeroseal (I saw this on "This Old House") done on the ventilation ducting that greatly increased our A/C unit efficiency. I waited a few months to write this, because I wanted to see what the results would be to my heating and cooling bills. My monthly bills are down to 50% of the previous amounts that I was paying. The proof is in the pudding. These guys are worth every cent. They are quick, efficient, and the guys on the work crews can't be beat. I can't recommend these guys enough.