I know this question has been around for awhile but technology continually changes. I am running 2 lasers using Harbor freights exhaust blowers, hey work fine. The problem is the noise and the cost to operate 750w x 2 1500 watts running 10 hours a day 15kw a day at .25 of each 3.75 a day 75.00 a month 900.00 per year for sucking air.. Second issue is noise I have 6 feet of duct between laser and fan then about 17 feet on the exhaust side to clear second story.

So here is the question I see some have started using hydroponic/ inline blowers any ideas?
Those that do not like inline and suggestions.

Please share what you have done and what has worked or not for you.

Thanks I am in a pinch as I am dealing with a noise complaint again so I have to get a solution.