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[Dirtslinger]

Where should my a coil be? Above the heat ex changer from outdoor boiler or below it?

[Scott7m]

Where should my a coil be? Above the heat ex changer from outdoor boiler or below it?

Depends on a whole slew of variables, there is no perfect way.  What are your concerns?

[Dirtslinger]

Where should my a coil be? Above the heat ex changer from outdoor boiler or below it?

Depends on a whole slew of variables, there is no perfect way.  What are your concerns?

Not really and concerns. I am just installing a new furnace and wanted to make sure it was done proper.

[Scott7m]

Well sometimes we have to install them above the a coil, sometimes below.  It just depends on how your existing system is done and installed.

[Dirtslinger]

Well sometimes we have to install them above the a coil, sometimes below.  It just depends on how your existing system is done and installed.

It will all be new from the ac unit furnace
 heat runs all will be replaced

[Scott7m]

Well in that case I'd install it in the main duct where it exits the plenum

If its possible, need to know more about if its in a house or mobile home, is it a split system etc.  In a closet or all under the house. 

But if its under the house or in a basement what I said will work the best