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Question DetailsAsked on 7/8/2015

how much would it cost to convert a wood burning fire place to gas?

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Hi this is Garrett K., community moderator with Angie's List. We have recently written an article covering this question. You can view that article by following this link. If you need help finding a provider, give us a call at 1-888-944-5478. Thanks!

Answered 4 years ago by garrettk

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One thing to note in the AL article - ventless gas fireplaces are the cheapest - but they are not really "ventless" - they just spew the exhaust gas directly out into the living space rather than outside.


Not a very bright thing to do in my opinion - I think direct venting heaters and fireplaces should be banned like they used to be "in the old days". Puts the combustion moisture, which from a quick google data lookup can be on the order of about 2/3 pounds of water per 100,000 Btu of natural gas or pound of propane burned.


A gas fireplace might run from around 10,000 Btu for a campfire or Napoleon Flame type to as much as 100,000 Btu for a "full-length log fire" - so for every hour of use it will put from a few ounces to as much as 1.5 cups of water vapor into the room - not a significant factor for sporadic short uses, but can cause condensation and mold in a cooler or less ventilated room, and is also acidic so can cause corrosion of metals and fabric and artwork deterioration - especially brass and copper and aluminum items.


It also puts carbon dioxide and carbon monoxide gas into the room, along with a certain small amount of sulfur compound from the odorant - which many people find very offensive in rooms without very good ventilation and frequent air changes.


As the AL article said - can run from quite cheap for a small insert, but rarely less than $1000 unlerss you already have a gas starter in the fireplace and are just doing a small gas log for appearance only - up into the many thousands for larger units, especially if bringing the gas line to it requires damaging walls or ceilings though that can usually be avoided at a slightly higher gasline installation cost by going outdoors with the line, which can avoid a lot of drywall and painting repair cost in the long run.

Answered 4 years ago by LCD




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