Fireplace Inserts for Existing Fireplaces

Shopping Guide: Fireplace Inserts for Existing Fireplaces

What Is a Fireplace Insert?

A fireplace insert is a self-contained heating unit designed to fit inside an existing masonry or factory-built fireplace opening. Inserts improve heating efficiency, update the look of outdated fireplaces, and reduce heat loss compared to traditional open fireplaces.

Types of Fireplace Inserts

Electric Fireplace Inserts

• No venting required (plug-in installation for many models)
• Quick, simple upgrades for existing openings
• Realistic flame effects with low maintenance
• Best for supplemental heat and everyday ambiance

Gas Fireplace Inserts (Natural Gas or Propane)

• Real flame with strong heat output
• Ventless and direct vent options (varies by model)
• Great for homeowners prioritizing heat performance
• Professional installation is typically recommended

Ethanol Fireplace Inserts

• Ventless and chimney-free
• Real flame without a gas line or hardwiring
• Clean-burning bioethanol fuel (varies by product)
• Popular for modern, minimalist designs

Water Vapor Fireplace Inserts

• Flame illusion created with water mist technology
• No real combustion
• Safe-to-touch visual effect (great for kids and pets)
• Ideal for homes and commercial spaces prioritizing safety

Do Fireplace Inserts Increase Efficiency?

Yes. Traditional open fireplaces can lose a significant amount of heat through the chimney. Inserts are more enclosed and controlled, which can improve heat retention and provide more efficient supplemental heating.

How to Choose the Right Insert

• Opening size: measure width, height, and depth of your existing fireplace.
• Fuel availability: outlet access, gas line access, and venting requirements.
• Heat goals: match BTU rating or coverage area to your room size.
• Style preference: traditional logs vs modern flame presentations.

Not sure how to measure or need help deciding? Call or text our experts at 866-713-2399.