For the longest time, our HVAC device always seemed to heat or cool certain parts of the lake house better than others; There were certain rooms that we could always count on to be cooler during the Summer when the a/c was running and often those same rooms were warmer in the Wintertide when the heat was on, but my family lived prefer this for so long that we just ended up taking it for granted! However, one day I decided to do some research as to what might be causing this problem, and one of the potential causes a bad air flow that was mentioned was blocked off vents or registers. That got me thinking, and it turns out that we did have some rooms with blocked vents and registers. The couch in the residing room was blocking a register. The dresser in our daughter’s room with blocking a vent. I found another register behind a TV that was pretty restricted in terms of air flow. I moved all of these obstructions out of the way so that the vents and registers can do their thing, but would you suppose that we started getting better airflow in those rooms that had there been sore registered blocked? I felt so silly for not addressing this problem sooner, however both of us could have had far better airflow that whole time! Maybe you should take a look around your home to see if there are any vents or registers that are being blocked by furniture or other such items. If some of them are, move the stuff out of the way and see if you do not get a better HVAC experience!