I can't say enough about the quality of the primary service representative Hector. The other guys were fine also, but Hector went above and beyond to fix the issue. I had another company do the 'energy audit' and they wanted about $1650, just for the 'sealing.' That sounded too high so I contacted Day and Night. Hector took a look and said it would be $800 for the sealing. After the sealing that was fine, we fixed the leakage. However, I still wasn't happy with the airflow in the newer part of the home. Hector suggested we replace certain registers with a dampered register, that would be another $ 325....my thoughts.....here we go I'll get screwed :( ....... How wrong I was. I checked online, and the dampers alone would have been $35 to $70 EACH! So I told Day and Night to go ahead and do it. It works great and the price was certainly fair. I'll use these guys again.