--- title: Is it OK to use the Air Vent Bath/Dryer Vent on the roof as an exhaust outlet for a direct vent furnace? description: In no way should the bath/dryer vent be used for furnace/water heater venting. --- [Skip to content](https://help.gibraltarbuildingproducts.com/en/knowledge/is-it-ok-to-use-the-air-vent-bath/dryer-vent-on-the-roof-as-an-exhaust-outlet-for-a-direct-vent-furnace#main-content) English Show submenu for translations ![GBAD Full Color.png](https://blog.stealthbond.com/hubfs/GBAD%20Full%20Color.png) Open main navigation Close main navigation - English Show submenu for translations - Go to www.gibraltarbuildingproducts.com Go to www.gibraltarbuildingproducts.com Hello. How can we help you? - There are no suggestions because the search field is empty. 1. [Help Center](https://help.gibraltarbuildingproducts.com/en/knowledge?hsLang=en) 2. [Ventilation](https://help.gibraltarbuildingproducts.com/en/knowledge/ventilation?hsLang=en) 3. [Bath/Dryer Vent](https://help.gibraltarbuildingproducts.com/en/knowledge/ventilation?hsLang=en#bath-dryer-vent) # Is it OK to use the Air Vent Bath/Dryer Vent on the roof as an exhaust outlet for a direct vent furnace? ## In no way should the bath/dryer vent be used for furnace/water heater venting. In no way should the bath/dryer vent be used for furnace/water heater venting. Furnace vents carry special UL listings and are fabricated in such a way as to not freeze during winter months though exposed to a heat source (think of it as an ice dam over a pipe opening) and are lined so as to not create dangerous situations with contacting shingles. 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