Cost of fireplace insert installation — St. Louis, MO

Last updated: September 24, 2026

What affects the price

When you budget for a new fireplace, the final number depends on several moving parts. Choosing between a simple electric insert and a complex gas or wood-burning setup changes labor needs significantly. If your home already has a chimney or gas line, costs stay lower. If we need to run new venting, cut into walls, or add custom stonework, the labor and material requirements increase. Every home layout is unique, and we look at your specific space to provide a plan. Exact pricing confirmed free on the call.

About this service

When calculating the cost of an insert, you must account for the unit price, the labor to fit it properly, and any necessary chimney modifications. If your chimney needs a stainless steel liner or specialized insulation, the price will reflect those safety upgrades. We evaluate your existing fireplace structure during an assessment to give you a clear range. Exact pricing confirmed free on the call.

Installing during the summer is a smart way to prepare for the colder months ahead. While it may seem counterintuitive to think about fire when it is hot outside, this is often the best window to get better pricing on units and shorter wait times. Your fireplace will be ready to go the moment the first chilly evening arrives.

Frequently asked in St. Louis

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

All cities in Missouri →

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

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 Hill, Tower Grove, Soulard, Central West End, Benton Park — and every surrounding area.