Gas fireplace insert installation for Gainesville fireplaces

Picture a sealed, glass-fronted firebox that slides inside the fireplace you already own and breathes through liners run up the chimney, one bringing outside air in and one carrying exhaust out. That's a gas fireplace insert, a heater you run from a switch or remote. Our pros, locally owned and family run, size it, run the liners and fit the surround to the insert's listing, and the measuring visit is free.

• Direct vent gas insert installation with sealed combustion
• Co-axial or co-linear liners run to the chimney top
• Surround panels sized to cover the old opening
• Mantel and trim clearances checked against the listing
• Gas insert installation finished with a lighting walkthrough

1. Size up firebox and chimney

   Our pro measures the opening, depth and chimney height, and checks clearances to the mantel and trim.

   01

2. Clean and prepare

   The old chimney is cleaned and the damper removed or secured the way the insert manual says.

   02

3. Liners up, insert in

   Intake and exhaust liners are fed down from the chimney top, then the insert slides in and connects to both.

   03

4. Connect, light and explain

   A gas contractor connects the line where needed, the insert is lit and checked, and you get a tour of the controls.

   04

Your fireplace and your gas supply shape the install.

Direct-vent gas insert

A sealed-combustion insert tested to ANSI Z21.88 as a vented gas fireplace heater.

Co-linear or co-axial liners

Liners from the insert maker's venting list, run to the termination its manual specifies.

Surround and termination cap

The maker's surround panels for your opening and the listed cap at the chimney top.

1. 01

   Insert size and features

   Larger inserts and extras like blowers and remotes change the price.

2. 02

   Chimney height

   Taller chimneys need longer liners and more setup at the top.

3. 03

   Gas line work

   A new or extended line is a gas contractor's job and shows up on its own line.

4. 04

   Preparing the fireplace

   A dirty chimney or damaged firebox is cleaned or repaired before the insert goes in.

• Firebox width, height and depth against insert sizes
• Chimney height and the route for two liners
• What the insert manual says to do with the old damper
• Clearances to the mantel, trim and walls
• The gas supply at the fireplace and an outlet for the blower
• Gas insert fireplace installation options for your opening

• Cold air leaking from the fireplace

  An open damper or a worn one lets air in and out. A sealed insert closes the opening off.

• Wood fires feel like too much work

  A gas insert lights from a switch or remote. We look at the fireplace first and then fit the right model.

• The fireplace barely warms the room

  An open firebox loses its heat up the chimney. A sealed insert with a blower pushes warmth into the room.

• Gas Fireplace Installation Sealed direct-vent or room-air B-vent units, each set up by its manual.
• Gas Log Installation Vented or vent-free log sets for a wood fireplace that's still sound.
• Gas Fireplace Venting Vent pipe, joints and caps on direct-vent and B-vent gas fireplaces.

• Vent route, gas line and finish, where your budget goes Logs, inserts and built-in fireplaces involve different installation work. The model and existing house determine which lines matter most in the budget.
• The chimney check first, then logs, an insert or a new unit Going from wood to gas can mean a simple set of gas logs or a sealed insert that heats the room. Each route asks something different of your chimney, and each has its own look.

Chimney Guides