My bathroom ventilation fan broke up and I am shopping for a new better one. I noticed the newer fans are higher CFM through-put and are quieter, I have narrowed down my choice to this one.
My question is that my condo was built in 1980 so its older, will this fan still do a good job and be quiter? I have read in some product reviews/youtube installation that high CFM fans require bigger ducts. I live in 3 floor condo building. I only have access to the bathroom and nothing outside.
Will this 150 CFM be still a good option for me or I just need to go with the lower ranking basic fan?
The bathroom size is 7 ft by 5 ft. I have no idea of about the ducts size.
I end up asking my condo management and I am told the duct is 6 inches which is great. Now I am gonna go with 150 CFM and I am buying this from Amazon which is way cheaper than others but I worry if this will fit? I took my current one dimensions (from outside) and is 12 by 10.5 inches. The one at amazon shows bigger but I think all new ones will be standard sizes. Should I be worrying about physical dimensions? Thanks!