Home Energy Medics did a wonderful job on our house. We now have much better heating and cooling. The original audit was very revealing of heat leakage points throughout the house. I had no idea that recessed lighting "cans" could leak so much outside air into the house. They discovered a possible CO (monoxide!) source in the basement. Their contractors who came in to add insulation and seal the leaks were always monitored closely and the work was done within a reasonable period of time. The possible monoxide source was dealt with, and one room on the second floor was totally redone and had a "mini-split" heating/cooling unit added. It is now much more cozy in the winter and cooler in the summer. Overall the forced air system runs much more efficiently and the house feels much more snug and comfortable. This old house, the original structure was built in 1936, feels good for at least another 20 years.