Looking for cost for a gas fireplace insert in Knoxville, TN? Call GasFireplaceInsert Experts for a contact a provider — no obligation. Licensed, insured certified gas 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 estimating a gas fireplace project, several variables shift the final number. The type of unit—whether you choose a direct vent, vent-free, or an insert—plays a big role. You also have to account for the labor required to run new gas lines or update venting through your walls and roof. Customizing the surround, including stone, tile, or a new mantel, adds to the material costs. If you are converting an existing wood-burning fireplace, the complexity of the chimney liner installation will impact the total. Exact pricing confirmed free on the call.

About this service

The cost for a gas fireplace insert is determined by the specific unit you select and the labor needed to vent it properly through your chimney. Upgraded features like ceramic glass, realistic log sets, and programmable thermostats will shift the total. We look at your specific fireplace to provide an exact pricing confirmed free on the call.

Summer is the smartest time to plan a new fireplace installation or replacement. Because contractors are not dealing with the winter rush, you often have more flexibility with scheduling appointments. It is the perfect opportunity to renovate your fireplace surround or upgrade to a more efficient model while you aren't reliant on it for daily heat.

Frequently asked in Knoxville

What's the average cost of a gas fireplace insert in Knoxville?

Can you put a gas fireplace insert in an existing fireplace in Knoxville?

Absolutely. Many Knoxville homes have traditional wood-burning fireplaces that can be converted to gas inserts. This is a common upgrade that enhances efficiency and convenience. The pros can assess your current fireplace to see if it's suitable for an insert installation.

What are the disadvantages of a gas fireplace?

While gas fireplaces offer many benefits, some disadvantages include the initial installation cost and the need for a gas line. They also produce less radiant heat compared to wood-burning fireplaces, and the flames might not look as authentic to some. These are points the experts can discuss with you.

What is the best gas fireplace insert for my Knoxville home?

What is the lifespan of a gas fireplace in Knoxville?

A well-maintained gas fireplace insert in Knoxville can last for many years, often 15 to 20 years or even longer. Regular professional servicing is key to ensuring its longevity and optimal performance. This includes checking the burner, pilot light, and venting system.

What are the disadvantages of a gas fireplace insert?

Potential disadvantages of gas fireplace inserts include the initial purchase and installation price, and the requirement for a gas line connection. Some homeowners also find the flame less natural than a wood fire. Discussing these points with a local expert is a good idea.

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

All cities in Tennessee →

More on this: CSIA gas appliance guidance — venting and inspection.

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: Downtown Knoxville, West Knoxville, North Knoxville, South Knoxville, Old City, Bearden — and every surrounding area.