AC Infinity CLOUDLINE S12 PRO, Quiet 12” Inline Duct Fan with 10-Speed Controller, EC-Motor Ventilation Exhaust Fan for Heating Cooling Booster, Grow Tents, Hydroponics

Added some ductwork in my house two years ago to help distribute the heat from the woodstove. This fan running 24/7, 6-7 months out ofthe year. Well worth the money compared to the units at H/D or Lowe's.

Read: if you have a 12” supply line running it the upstairs of your home and the air conditioner just isn’t pushing the air to the registers, get this!!! Installed one in a 2700 sq ft two story home with the furnace in the basement, there is now measurable air reaching the entire top floor. And the best part is you cannot hear it from outside the utility/mechanical room, even when running at full power.

great only 1 month use

I have an old house built in 1940 and had a full renovation with the HVAC air handler installed in the attic. The problem was getting the hot air “heat” to flow down to the first floor of this two story house. Since we have an electric heat pump system, this solution works best. The air booster now forced the heat down to the first floor and the house is completely warm instead of hot upstairs and cold downstairs. A must for anyone having a cold downstairs problem.

I really like the volume of air this fan moves. I use it for a whole house fan when the air outside is cool! It is very quiet on the lower settings.