Where can you buy these backdraft dampers that would go inside your hot air supply ducts for an add on furnace installation? Is it something that has to be specially made? I'm looking for 8" x 16" or 8" x 18" and 12.5" x 21.5".
I have a PF100 with the 3- speed 1000cfm blower and I'm trying to install it in parallel with my heat pump system. I was also wondering if and 8" x18" duct is big enough hot air supply for the PF100 since that is the biggest duct size on my existing heat pump hot air supply.
Thanks ahead
Patrick
I have a PF100 with the 3- speed 1000cfm blower and I'm trying to install it in parallel with my heat pump system. I was also wondering if and 8" x18" duct is big enough hot air supply for the PF100 since that is the biggest duct size on my existing heat pump hot air supply.
Thanks ahead
Patrick