One of the most common questions we hear from customers is: "How complicated is it to install a gas fireplace?"
The honest answer: it's not a DIY project. Gas fireplace installation requires a licensed professional. But understanding the process — from planning to final inspection — helps you set realistic expectations, ask the right questions, and make sure the job gets done right.
Here's what the installation process typically looks like from start to finish.
The Installation Process: Step by Step
Site Assessment and Planning
Before anything is ordered or installed, your contractor will assess the site. Key questions they'll answer:
- Where will the fireplace be located? Interior vs. exterior wall affects venting options.
- How will it vent? Horizontally through an exterior wall, or vertically through the roof?
- Is there existing gas service in the room? If not, a gas line extension will be required.
- What clearances are available? The installation must meet minimum clearances to combustibles on all sides.
- What's the framing situation? The opening may need to be framed or modified to fit the unit.
Permits
In most jurisdictions, a gas fireplace installation requires a permit. Your licensed contractor will typically handle the application on your behalf. Permit requirements generally cover gas line work, venting, and structural framing modifications.
Don't skip the permit. Unpermitted gas work can create liability issues when you sell your home — and more importantly, it means no one officially verified the installation is safe.
Framing and Rough-In
Once permits are in hand, the physical installation begins:
- Framing — the opening is framed to the fireplace's rough opening dimensions.
- Gas line rough-in — a licensed plumber or gas fitter runs the gas line to the fireplace location and installs a shutoff valve.
- Venting rough-in — the vent pipe is run from the fireplace location to the termination point.
Fireplace Installation
With the rough-in complete, the fireplace unit is set into the opening. The installer will:
- Slide the firebox into the framed opening
- Connect the gas supply line
- Connect the vent pipe to the firebox collar
- Verify all clearances to combustibles
Finishing Work
After the unit is set, finish work begins:
- Facing and surround — the area around the firebox is finished with tile, stone, drywall, or a pre-built surround kit.
- Controls — the remote control receiver, thermostat, or wall switch is wired and connected.
- Trim kit — installed to frame the glass opening cleanly.
Start-Up and Inspection
With everything in place, the installer performs the initial start-up:
- Gas supply is turned on and all connections are tested for leaks
- Pilot is lit and the main burner is fired
- Flame height, remote control, and thermostat function are verified
- Vent is checked for proper draft and exhaust
A final inspection by your local building department confirms the installation meets code. Once approved, you're ready to use your fireplace.
How Long Does It Take?
A straightforward installation — single-story home, exterior wall, no gas line extension — typically takes one to two days. More complex installations with longer vent runs, gas line extensions, or custom facing work may take three to five days.
Lumiflares Pro Installation
Lumiflares offers professional installation coordination for all Kingsman gas fireplaces. We'll connect you with a qualified installer in your area and stay involved throughout the process to make sure everything goes smoothly.
Ready to get started? Browse Kingsman gas fireplaces or learn about our Pro Installation service.
Shop Kingsman Gas Fireplaces → Learn About Pro Installation →Questions? Our specialists are available Monday through Friday, 8AM–5PM ET. Call 877-879-9191 or email support@lumiflares.com.
