Looking for gas insert fireplace installation cost in Knoxville, TN? Call GasFireplaceInsert Services 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

The final price for a new gas fireplace depends on a few moving parts. First, you have to consider whether you are installing a unit into an existing chimney or creating a new opening in a wall, which adds labor. The type of venting required and the current proximity of your gas lines also play a big role in the complexity of the install. Aesthetic choices, like premium stone surrounds or remote-controlled flame features, will adjust the total as well.

About this service

The cost to install a gas insert depends on your home’s venting setup, the size of the unit, and any necessary gas line modifications. You will need this service if you are looking to convert an existing wood-burning masonry fireplace into a more efficient, cleaner-burning gas system. An inspection of your chimney and flue is required before we start to ensure safety and code compliance. Exact pricing confirmed free on the call.

Many people think about fireplaces only in the cold, but summer is actually a great time to schedule an installation. Since demand is lower, you can often get your project finished without the long wait times seen during the peak winter months, making sure you are ready before the first frost arrives.

Frequently asked in Knoxville

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

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

Absolutely, that's often the main reason people get them! A gas insert is designed to fit right into your current wood-burning firebox in Knoxville. It's a great way to modernize an older fireplace without a full rebuild. The pros who come out will confirm compatibility during your estimate.

What are the disadvantages of a gas fireplace insert?

Some people miss the crackle and smell of a real wood fire. Also, you'll need a gas line and proper venting, which can add to installation costs. However, for many Knoxville homeowners, the convenience and efficiency outweigh these minor points. A quick call can help you weigh these factors for your situation.

What is the best gas fireplace insert for 2026?

The 'best' insert really depends on your needs and your Knoxville home's setup. Factors like heating output, aesthetics, and efficiency are key. A specialist can guide you through the options based on what you're looking for. They'll discuss brands and features that fit your budget and style.

What are the disadvantages of a gas fireplace?

What is the lifespan of a gas fireplace?

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