A lot of Countryside homeowners love the idea of a fireplace but not the work of hauling wood, cleaning ash, and scheduling sweeps. Converting a wood-burning fireplace to gas is a popular answer, and it is very doable — but the right approach depends on your chimney, and the venting details are where safety lives.
The three common conversion paths
- Gas logs: a burner and ceramic log set placed in the existing firebox, vented up the open flue — simplest, least efficient
- Gas insert: a sealed unit installed into the firebox with its own liner, far more efficient and a real heat source
- Full gas fireplace: a new sealed appliance, used when the old firebox is not suitable
Why the flue has to be addressed
A set of vented gas logs uses the existing chimney, which must be sound and correctly sized — the damper is typically clamped open for safety. A gas insert, by contrast, needs its own properly sized stainless liner run to the top of the chimney to vent efficiently and safely. Dropping an insert into the old oversized masonry flue without a liner causes poor performance and moisture problems.
Safety points that are not optional
- A licensed gas connection — gas line work is not a do-it-yourself job
- A damper clamp on vented log conversions so the flue cannot be closed on a running burner
- A carbon monoxide detector near the fireplace
- An inspection of the existing flue before anything is installed
Deciding what is right for your home
If you want ambiance with minimal cost, vented gas logs in a sound chimney may be enough. If you want efficient heat, an insert with a proper liner is the better long-term choice. We inspect the existing chimney first and tell you honestly which conversion your Countryside home can support and what the venting will require.
Homeowners in Countryside can read more on our Countryside chimney sweep page, or see our full gas fireplace service service.
Considering a gas conversion?
Careful work, up-front pricing, seven days a week in La Grange and the western suburbs.
Call (708) 432-5330Frequently asked questions
Can any wood fireplace be converted to gas?
Most can, but the right option depends on the firebox and flue condition. An inspection determines whether gas logs, an insert, or a full unit is appropriate.
Do gas logs need the chimney to stay open?
Vented gas logs require the damper to stay open, usually with a clamp, so combustion gases always have a path out. This is a key safety requirement.
Is a gas insert more efficient than gas logs?
Yes, considerably. A sealed insert with its own liner delivers real heat, while vented gas logs are mainly for ambiance and send most heat up the flue.
Do I still need chimney service after converting to gas?
Yes. Gas systems need an annual service to check venting, the burner, and for carbon monoxide, and any liner should be inspected.
Written by Adam Evans, owner of Chimney Sweep Brothers and a chimney technician with 12 years of experience serving La Grange, IL and the western suburbs.
Published: September 26, 2026