Cost of a gas fireplace installation

Looking for cost of a gas fireplace installation in St. Louis, MO? Call FireplaceInstallation Services for a contact a provider — no obligation. Licensed, insured certified fireplace pros serve St. Louis 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

Fireplace pricing depends on your specific setup. If you already have a gas line or a chimney in place, the work is much simpler and cheaper. Installing from scratch requires more labor, including framing, venting, and finishing work with stone or tile. The type of unit—whether it is gas, wood, or electric—also changes the budget significantly. Larger units or custom hearth designs naturally add to the cost compared to basic inserts. We can discuss your project details and get exact pricing confirmed free on the call.

About this service

The cost of a gas fireplace installation depends on how far your gas line is from the chosen wall. We evaluate your current utility setup to minimize extra piping work. This service provides a low-maintenance heating solution for your living room or bedroom. Exact pricing confirmed free on the call.

Summer might seem unusual for fireplace work, but it is actually the most efficient time to renovate. Contractors are often less busy, meaning you get more attention and faster installation times. By tackling this project now, you skip the waitlists that pop up once the temperature drops. You will be fully prepared well before the first frost arrives.

Frequently asked in St. Louis

What's the average cost to install a fireplace in St. Louis?

Can I install a fireplace myself in St. Louis?

How do you install a fireplace?

Professionals assess your space, plan the venting, and ensure all connections are secure and code-compliant. This includes precise handling of gas lines or chimney construction. The goal is a safe, functional, and aesthetically pleasing addition to your St. Louis home.

How much does it cost to install a gas fireplace in St. Louis?

Do fireplaces need to be professionally installed?

What is the 2 + 10 rule for fireplaces?

The 2+10 rule generally pertains to chimney height, stipulating it must be at least two feet taller than any part of the building within a ten-foot radius. This ensures proper draft and smoke dispersal. Professionals understand and apply these critical codes for safe operation.

Also serving nearby: O Fallon · Springfield · Columbia · Champaign · Peoria

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