2007 Jeep Liberty Ventillation/Battery Issue

I have a 2007 Jeep Liberty with 85K miles on it; never any issues. Last Wednesday, I noticed that my air (vent) didn't feel very strong. I turned it up slowly from position 1 through each to position 4 and at each stop, I could hear the blower motor getting louder because it was blowing harder but I couldn't hardly feel the air; it felt like something was blocking the vent. I turned it off but while in the off position I could hear the blower making a "woosh woosh woosh" sound. The next morning I went out to start it and it wouldn't start. I could hear the solenoid click but it wouldn't turn over. I called AAA for a tow and the driver jumped it and it started right up so I took it to Midas for a new battery, serpentine belt and tensioner pulley (the belt and the pulley were known issues that were scheduled prior). The Jeep ran fine however the blower continued to make the same noises and the air still wasn't blowing. By Sunday, (36 hrs) the brand new battery was dead. I had it towed to my regular mechanic who tested the battery and the alternator and said the battery was fully charged and the alternator was charging as normal but the AC/vent was blowing normally-he could not replicate the issue. On the way home, the vent started the making the making the "woosh woosh woosh" sound again and felt like the air was blocked again. Any ideas? Should I expect a dead battery in the AM again? Please help!