Vented vs Closed Cooler Covers
1 min read
Still cold indoors with a cover on, or pads got wet under a "breathable" cover in winter? Mesh and vented fabrics are for in-season idle only — winter needs solid closure.
Need the quick reference first? Mesh vs solid fabrics
Problem: Wrong Closure for the Season
Mesh keeps dust off idle summer units while air flows. Used at winter shutdown, cold outdoor air passes straight through — drafts continue and rain soaks pads. Teams sometimes pick mesh because it is lighter and cheaper; the failure shows up as cold rooms and wet pads in spring.
Solution: Closed for Shutdown, Vented for Idle
- Closed solid fabric — after full drain/dry shutdown; blocks drafts, rain, and pests
- Mesh / vented — idle unit during cooling season in dusty yards; not winter
- At shutdown: swap mesh for solid cover — do not leave mesh on through winter
Interior Duct Still Drafting?
A solid cover seals outdoor intakes only. If rooms stay cold, check the interior duct damper or panel inside the house — cover fabric cannot fix an open duct path.