1. interplexr

    Oversize finished basement return, pull air from floor above

    I’m currently reworking my HVAC for finishing my basement. The house is ICF and well sealed/insulated. I have a single unit for the whole house. Manual J calcs show my existing unit is adequate for the house including the basement addition. I’m relocating the unit from one part of the basement...
  2. interplexr

    Jump duct from 1st floor sunroom to finished basement

    I am finishing my basement (ICF) and moving my existing HVAC system/ductwork and taking the opportunity to get a more efficient heatpump that can better ramp down with our loads. I plan to duct the main 1st floor return to the new unit but we also have a return for our sunroom which would be a...
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