Booster Blower

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STOKES VACUUM BLOWER BOOSTER PACKAGE    US $6,500.00

Edwards EH250 Vacuum Pump Booster Blower 220 CFM    US $4,495.00

Edwards Mechanical Booster Vacuum Pump Blower QMB1200 as is A305 86 905 untested    US $4,002.12

Stokes Vacuum 622 4MV Booster Blower 2000 CFM Pump Only NO MOTOR    US $2,600.00

Leybold WSU250 Blower Booster Pump Rebuilt Tested    US $2,500.00

Edwards QMB250 Rebuilt Vacuum Pump Blower Mechanical Booster    US $1,650.00

Oerlikon Leybold RUVAC WA1001 5HP Blower Booster Roots Vacuum Pump WA 1001 HE200    US $1,499.99

Oerlikon Leybold RUVAC WS1001 5HP Blower Booster Roots Vacuum Pump WS 1001 HE400    US $1,499.99

Oerlikon Leybold RUVAC WS1001US 5HP Blower Booster Roots Vacuum Pump WS 1001 US    US $1,499.99

Edwards QMB250 Mechanical Booster Blower untested as is    US $904.12

How do you hook up a duct air-booster fan for the heating ducts?

Do I just wire it to the same terminals as the blower motor on the circuit board or is there another set of terminals for that purpose. Not my furnace so I don't know what make and model....it's for a friend.
Thanks much for any input or links.
I know on some heating systems, the furnace blower is wired from the low voltage on the circuit board to a 120 volt relay to power the blower---if the duct booster fan is rated for the same low voltage as the circuit board, can I just wire it to the same terminals as the blower? I'm thinking the duct booster is not 120 volts but more like 24---only 5-6 inch diameter fan on the booster and the wiring is small diameter.

You need to be sure the voltages for the the blower and duct fan motors are the same. It is pretty sure both will be single phase, but they must be the same. The blower motor may have more than one speed. Normally there is a higher speed for air conditioning and a lower speed for heating. Without the wiring schematic, it is nearly impossible for anyone to give you a correct answer.

Paracraft booster using a leaf blower: first experiment