Gas fireplace insert installation from our Christmas team
Already picked an insert? Our Christmas team reads its manual and measures your firebox before you buy.
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Written into every gas insert quote in Christmas
What our Christmas crew confirms first, so the insert you pick is one that will fit, vent and connect.
- Chimney passageway examined and cleaned before connection
- Termination cap sealed and secured to the chimney top plate
- Plates or insulation closing the gap around the liners at the damper
- Gas supply work by a qualified gas professional, on its own line
Gas insert know-how for Christmas homeowners
Each point below comes from the insert manuals and the gas code, and each one shapes your Christmas estimate.
What the insert manual asks of the chimney
Before the insert goes in, its manual lists conditions for the chimney it will vent through. The chimney must be built of noncombustible materials, clean and in good working order, with its joints engaged and the structure secured. Cleanouts have to fit properly so air does not leak into the chimney.
Those conditions cannot be judged from the living room. Our technicians look up the chimney, at the top and at any cleanout door, and write down anything that needs attention. Chimney repairs are quoted as their own items, so you can see what belongs to the insert and what belongs to the chimney.
Trimming a factory-built firebox to fit
Metal factory-built fireplaces sometimes have a raised floor or a lip across the front that steals height. One insert manual allows for this: the metal floor of the solid-fuel firebox may be removed, and a metal lip standing above the hearth pad may be taken off, to reach the minimum opening.
Those are specific allowances in one maker's manual, so we follow the manual for your insert. Where it permits the change, we make it cleanly and note it on the estimate. Where it does not, we look at another model.
How high the cap has to sit
Vent caps need a minimum height above the roof, and that height changes with the roof pitch. The Supreme manual includes a table of minimum heights for different pitches, measured up to the cap's lowest discharge opening.
On an existing chimney, the chimney usually sets the height. We still check the cap against the table and against nearby walls or higher roof sections, so the exhaust clears the roof the way the manual intends.
How every fitting is leak checked
Each fitting on the supply is checked before the insert is used. The installation manual names the methods: a listed combustible gas detector, a noncorrosive leak detection fluid or another approved method. It adds a warning that should never need repeating: no open flame.
The check happens while the connection is still exposed, before the surround and trim close off access. Any fitting that shows a problem is remade and checked again, so the connections were proven where they can still be reached.
Other work in Christmas
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- Prefab and Zero-Clearance Fireplace RepairRepair the fireplace according to its model.
- Ventless Gas Fireplace ServiceService the unit within its exact installation limits.
- Fireplace InstallationPlan the fireplace before opening the wall.
- Smoke Chamber RepairRepair the transition above the fireplace opening.
Learn more about gas fireplace insert installationChristmas services
Common gas insert questions in Christmas
No sales script, only what we tell homeowners in Christmas at the fireplace.
Does the fireplace inspection in Christmas cost anything?
Nothing at all. Our installer measures the fireplace in your Christmas home, answers your questions and leaves a written estimate, and you decide in your own time.
Is there a 10% discount on gas inserts?
There is. A gas insert installation booked within 72 hours after your free inspection is 10% off. Ask for it when you call, and the saving is written into the estimate.
Request your free estimate
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- Free inspection
- No hidden fees
- Family owned and operated
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