I'm getting ready to gather my parts and start my install. Looking at my heat pump inside unit, I'm not real sure as to where to put the HX. Above my A-coil is the fan and the the plenum get narrow going to the main trunk plenum. (15.5"W x 11" D x 29" H). I have a 1400 sq ft main floor house with a full basement (only 1/4 is finished) and I will be heating all of it plus the DHW. There is a space below the A-coil that I could install but thats where the return comes in. I found A Hardy H-4 used that I will be installing. Thanks for any help.
Kevin