However an attic in pensacola florida is likely to have a humidity level closer to 100 and the risk of condensation on ductwork would then go up quite a bit.
Condensation in attic ductwork in winter.
Over time condensation dripping from your ductwork onto attic insulation can cause it to compress which lowers its r value.
Condensation problem in the ductwork in wintertime question i have a dedicated ductwork system with the air handler in unconditioned attic.
Without seeing your duct attic situation one can only speculate but ducts touching each other lying on or in insulation in our climate.
Think about it condensation on ductwork probably isn t a big problem in phoenix arizona but why.
It can also feed mold growth and cause ceiling joists to rot and sheetrock to disintegrate leading to unhealthy air quality in your home and the need for costly structural repairs.
When the warm air rising from the first floor gets into the duct inlets a lot of condensation forms.
Even though the ducts are insulated and my attic is over insulated the air and surfaces inside the ducts will get very cold if the hvac is left off.
If the attic is foam sealed with no leakage to the outside that would work.
Another condensation problem occurs in cold climates in the winter with ac ducts in the attic and a different heating system.
No the radiant barrier will not solve the condensation issue.
Because the average humidity level is 10 20 in phoenix.
But at a premium cost.