Looking for cost to install 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

Several factors influence the final cost, including the complexity of the venting work and whether your home already has a gas line nearby. Consider this investment when you are ready to increase your home’s energy efficiency and comfort. 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 to install a gas fireplace insert in Knoxville?

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

Absolutely. That's the main purpose of a gas fireplace insert, especially for older homes in areas like South Knoxville. They're designed to fit into your current masonry or metal fireplace. Pros in Knoxville can confirm compatibility and ensure a safe, efficient installation for your home.

What are the disadvantages of a gas fireplace insert?

While convenient, some find they don't offer the same ambiance as a real wood fire. Also, they require a gas line, which might be an initial installation hurdle. Some models might not produce as much radiant heat as a wood-burning unit. Pros can discuss these points and help you decide if it's the right fit for your Knoxville lifestyle.

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

The 'best' depends on your needs and existing fireplace. Consider factors like heating output, desired aesthetics, and efficiency ratings. Pros serving Knoxville can guide you through top-performing models suited for various home sizes and styles. They'll help you choose one that meets your specific requirements.

What is the lifespan of a gas fireplace insert?

What are the disadvantages of a gas fireplace?

Compared to wood, gas fireplaces don't produce the same crackling sound or smoky scent many associate with a traditional fire. They also rely on a continuous gas supply, and some find the visual flame less dynamic than wood. However, their ease of use and consistent heat are major advantages for many Knoxville residents.

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 Hills, Bearden, South Knoxville, Old City, North Knoxville — and every surrounding area.