Gas fireplace insert installation cost

Looking for gas fireplace insert installation cost in Knoxville, TN? Call FireplaceInstallation Direct for a contact a provider — no obligation. Licensed, insured certified fireplace pros serve Knoxville and the surrounding area, and you'll get straight answers on timing and what affects the price.

Last updated: September 24, 2026

What affects the price

When you budget for a new fireplace, the final number depends on several moving parts. Choosing between a simple electric insert and a complex gas or wood-burning setup changes labor needs significantly. If your home already has a chimney or gas line, costs stay lower. If we need to run new venting, cut into walls, or add custom stonework, the labor and material requirements increase. Every home layout is unique, and we look at your specific space to provide a plan. Exact pricing confirmed free on the call.

About this service

Installing an insert means placing a new firebox into an existing masonry fireplace. Costs vary based on the size of the insert, the condition of your existing chimney, and whether a new chimney liner is required for proper venting. The final total depends on the specific requirements of your chimney and the gas hookup needed. Exact pricing confirmed free on the call.

Installing during the summer is a smart way to prepare for the colder months ahead. While it may seem counterintuitive to think about fire when it is hot outside, this is often the best window to get better pricing on units and shorter wait times. Your fireplace will be ready to go the moment the first chilly evening arrives.

Frequently asked in Knoxville

What's the average cost to install a fireplace insert in Knoxville?

The cost to install a gas fireplace insert in Knoxville can vary based on the complexity of the installation, the type of unit chosen, and any necessary modifications to your existing setup. Factors like venting requirements and whether you're converting from a wood-burning unit play a significant role. A professional assessment is key to getting an accurate price.

Do fireplaces need to be professionally installed in Knoxville?

Can I install a fireplace insert myself in Knoxville?

While some DIY enthusiasts might consider it, installing a gas fireplace insert yourself in Knoxville is generally not advised. These installations involve working with gas lines and crucial venting systems that require specialized knowledge and tools. Improper installation can lead to serious safety risks and void warranties.

How do you install a gas fireplace insert?

Professional installation of a gas fireplace insert in Knoxville typically involves preparing the firebox, running gas lines, installing the venting system, and securing the unit. The pros will ensure all connections are leak-free and the venting is correctly routed for optimal performance and safety. They'll also test the unit thoroughly.

What is the 2 + 10 rule for fireplaces?

The 2+10 rule, often referenced in fireplace installation, pertains to the clearance needed for vent pipes. It generally means for every foot of vent pipe, you need two inches of clearance from combustible materials, plus a mandatory ten inches of clearance. Pros in Knoxville follow these crucial guidelines for safe installations.

How much does it cost to install a gas fireplace insert in Knoxville?

Also serving nearby: Asheville · Chattanooga · Murfreesboro · Roswell · Sandy Springs

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More on this: NFPA heating safety — heating equipment fire data.

Service area details

198,162residents

2,007per sq mile

8ZIP codes served

Serving all of Knoxville — population 198,162; about 2,007 residents per square mile across 98.7 sq mi. ZIP codes covered include 37901, 37902, 37909, 37912, 37914, 37915, 37916, 37917.

Neighborhoods served in Knoxville: Old City, West Hills, Bearden, Downtown Knoxville, Sequoyah Hills — and every surrounding area.