# Gas fireplace question: Vented or unvented?

**URL:** <https://boards.straightdope.com/t/gas-fireplace-question-vented-or-unvented/831381>\
**Category:** In My Humble Opinion\
**Created:** [March 19, 2019, 7:33pm UTC](https://boards.straightdope.com/t/gas-fireplace-question-vented-or-unvented/831381 "2019-03-19T19:33:20Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Urbanredneck](https://avatars.discourse-cdn.com/v4/letter/u/ea5d25/32.png) [@Urbanredneck](https://boards.straightdope.com/u/Urbanredneck)\
**Post date:** [March 19, 2019, 7:33pm UTC](https://boards.straightdope.com/t/gas-fireplace-question-vented-or-unvented/831381/1 "2019-03-19T19:33:20Z")

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We are looking into converting our old wood burning fireplace into a gas one and I’d like any of your opinions.

How difficult was the conversion?

Vented or unvented?

What is your opinion on it overall?

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**Author:** ![kanicbird](https://avatars.discourse-cdn.com/v4/letter/k/5f8ce5/32.png) [@kanicbird](https://boards.straightdope.com/u/kanicbird)\
**Post date:** [March 19, 2019, 7:55pm UTC](https://boards.straightdope.com/t/gas-fireplace-question-vented-or-unvented/831381/2 "2019-03-19T19:55:37Z")

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Go vented, and if you are converting a existing fireplace it will be vented.

Ventless gas just dump the products of combustion into the room, some people, including me, can feel the effects of that which may just be slightly depleted oxygen levels and increased CO2.

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**Author:** ![Daylate](https://avatars.discourse-cdn.com/v4/letter/d/9dc877/32.png) [@Daylate](https://boards.straightdope.com/u/Daylate)\
**Post date:** [March 19, 2019, 11:36pm UTC](https://boards.straightdope.com/t/gas-fireplace-question-vented-or-unvented/831381/3 "2019-03-19T23:36:30Z")

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I found out the hard way that an unvented fireplace/store will dump about a pint of moisture into the atmosphere each day. Keeps thinks kind of damp. it does.

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**Author:** ![Kent\_Clark](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/kent_clark/32/105_2.png) [@Kent\_Clark](https://boards.straightdope.com/u/Kent_Clark)\
**Post date:** [March 20, 2019, 1:07am UTC](https://boards.straightdope.com/t/gas-fireplace-question-vented-or-unvented/831381/4 "2019-03-20T01:07:36Z")

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Building codes around here require a gas fireplace be vented.