jwh92020 wrote:Martin,
Thanks for the input. I'm pretty much settled on an 8k unit. Since you are in the HVAC biz, you may have a knowledgeable answer to this. My first thought was to have a "plenum" made for the heat exhaust that would connect to my existing 5"exhaust line for the portable. The plenum would be about 6" deep and there would b a 5" collar on the side for the existing flex hose to connect to. Would doing this restrict the heat flow too much and cause the unit to run hot?
Thanks,
John
I'm no professional, but a 5" exhaust hose seems to be way too small. You would be transitioning from about 150-200 square inches of area to about 20 square inches of area. For most window A/C units, the condenser cooling fan can't handle much static pressure (back pressure). Reducing the exhaust area for cooling the condenser to less than 20% as on the back side, can't be good for the performance of the unit.