If i understand what you have i can almost assure you that a booster fan will not work.
Do register booster fans really work.
Register fans register fans are installed at the vent in each room and are a more cost effective option when only one or two rooms are affected by airflow problems.
Unfortunately the only real solution is to install larger ducts.
You can easily handle the rectangular register fan.
They help pull air past registers which previously vented out most of the hot or cool air into an adjoining room allowing the air to flow further along the ducts.
A few kinds are pictured here.
Do duct booster fans work.
You can also install it on the wall or floor.
A properly designed hvac system which includes the vents and ductwork should provide sufficient heating and cooling throughout the house regardless of distance from the heating and cooling systems.
A register booster fan can make your hvac system work better suncourt flush fit register booster fan in brown ac infinity airtap t4 quiet register booster fan with details about airtap t4 quiet register booster fan heating cooling 4 x 10 registers white suncourt flush fit register booster fan in white register duct booster fan insidestories top 2019 smart vents er s.
Register fans also called in floor booster fans are small fans that sit directly in or on the register s in the problem room s.
Or a second a c unit for the upstairs.
Some feature a thermostat and multi speed fan.
Although there is the rare instance generally duct booster fans do not work.
Register booster fans are the most economical and simplest to install.
These plug and play units replace your existing floor wall or ceiling register.
Inline booster fans may be installed at key points along the ductwork to help to keep air flowing at a higher speed.
They are easy to install and inexpensive usually less than 80 each.
Some come in different colors have their own thermostat are multi speed or can be electronically controlled.
They mount flush to the surface plug into the wall outlet and feature a modest internal fan that goes on and off when the hvac system kicks in.
The installation process for this kind of fan is quite simple and economical.