Update - SunKool came by today. The guy said the manufacturer of the vent erroneously put in a screen rather than a flapper. SunKool doesn’t check this prior to installation and assumes it is correct. However Sunkool can’t just replace the screen with a flap. The roof vent itself has to come out and be replaced by the correct one. Consequently in addition to Sunkool coming back, a roofer also has to come back. We’ll be able to use the dryer until that time since they cut away the screen. The SunKool Guy said when they come back they will check the vent pipe for any obstruction. What a pain in the ass!
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