# Water leaking in front passenger floor board when heater turn on

**URL:** <https://community.cartalk.com/t/water-leaking-in-front-passenger-floor-board-when-heater-turn-on/57369>\
**Category:** Maintenance/Repairs\
**Tags:** accord, honda\
**Created:** [November 9, 2010, 7:23pm UTC](https://community.cartalk.com/t/water-leaking-in-front-passenger-floor-board-when-heater-turn-on/57369 "2010-11-09T19:23:00Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![bankdiana](https://avatars.discourse-cdn.com/v4/letter/b/d78d45/32.png) [@bankdiana](https://community.cartalk.com/u/bankdiana)\
**Post date:** [November 9, 2010, 7:23pm UTC](https://community.cartalk.com/t/water-leaking-in-front-passenger-floor-board-when-heater-turn-on/57369/1 "2010-11-09T19:23:00Z")

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Water leaks in front passenger floor board when heater is turned on. Windows fog up. Does not leak with a/c or defroster on. Heater core has been replaced and sun roof vents blown out. Heater has heat.

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**Author:** ![LedLawless](https://avatars.discourse-cdn.com/v4/letter/l/bcef8e/32.png) [@LedLawless](https://community.cartalk.com/u/LedLawless)\
**Post date:** [November 9, 2010, 10:34pm UTC](https://community.cartalk.com/t/water-leaking-in-front-passenger-floor-board-when-heater-turn-on/57369/2 "2010-11-09T22:34:32Z")

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Odds are the drain hose for the HVAC system is plugged.