Outdoor gas fireplace — St. Louis, MO

Last updated: September 24, 2026

What affects the price

The final price for your gas fireplace installation depends on several moving parts. It starts with the unit itself—whether you choose a basic insert or a high-end designer model with custom stone work. We also look at your existing venting setup; if we need to run new lines or modify your chimney, labor costs will increase. Gas line access and electrical requirements are other variables that shift the total investment. We can provide exact pricing confirmed free on the call.

About this service

An outdoor gas fireplace is a permanent hearth feature designed for patios, decks, or backyard living spaces. It provides warmth and ambiance for outdoor gatherings without the cleanup associated with wood fires. If you are looking to extend the usability of your outdoor space into cooler months, an outdoor unit is a great addition. Installation requires careful planning regarding gas line routing and weather-resistant materials to ensure the fireplace functions safely in an open-air environment.

Summer is the best time to upgrade or install a new system. Since demand is lower, you can often coordinate installation around your vacation schedule or home renovation projects. Tackling the installation now means you will be ahead of the rush when the first frost arrives later in the year.

Frequently asked in St. Louis

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

All cities in Missouri →

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

Service area details

Serving all of St. Louis — population 281,754; about 4,565 residents per square mile across 61.7 sq mi.

Neighborhoods served in St. Louis: The Loop, Central West End, Tower Grove South, Soulard, CWE — and every surrounding area.