We just moved into a split level and it has a "power vent" install in the attic and it's pretty loud(as in noticeable even in the basement). My first question is do I need it, how can I tell if I do? These weekend it probably didn't get above 70 degrees and it was on so that makes me think it's going to run 24/7 in the summer when the temperature is 80-90 everyday. :huh: The house was built in '78 and the roof was replaced within the last 10 years so I believe is has a ridge vent. I will try and snap some pictures of the house and attic tonight to try and get a better idea of what it looks like but I'm hoping I can just turn it off.