The installation costs of gas fireplaces typically range from $2,000 to $5,000, depending on factors like location, type, and additional venting requirements.
Installing a gas fireplace costs between $2,500 and $16,200, with most homeowners spending $7,000–$8,000. The final price depends on fireplace type, venting requirements, and labor. This guide breaks down all cost factors so you can budget accurately.
Gas Fireplace Types and Installation Costs
Gas fireplaces come in three main types, each with different installation requirements and price points.
1. Gas Fireplace Inserts ($7,200–$8,880)
These units fit into existing masonry fireplaces. Installation includes:
- Two 3″ stainless steel liners (exhaust/intake)
- Chimney cap installation
- Gas line connection
- Electrical wiring for blower/ignition
2. Direct-Vent Prefab Fireplaces ($7,200–$16,200)
For homes without existing chimneys. Costs vary based on:
- Wall construction requirements
- Venting system complexity
- Custom surrounds/mantels
3. Ventless Gas Logs ($2,500–$5,000)
The most affordable option but restricted in many areas due to safety concerns. No venting required but must include oxygen depletion sensors.
Key Cost Factors
Venting System
| Type | Cost | Notes |
|---|---|---|
| Chimney liner | $1,200–$2,500 | For inserts only |
| Direct vent | $800–$2,000 | Horizontal/vertical options |
| Vent-free | $0 | Not allowed in bedrooms in most states |
Gas Line Installation
New gas lines cost $15–$25 per linear foot. Most installations require:
- 3/4″ black iron pipe for runs under 30′
- 1″ pipe for longer runs
- Shutoff valve ($75–$150)
Electrical Work
Modern gas fireplaces need:
- 120V outlet ($150–$300)
- Wall switch ($100–$200)
- Remote/wifi controls ($200–$500)
Labor Costs by Project Type
Basic Insert Installation
- 8–12 hours labor
- $1,500–$2,500 total labor
- Includes gas/electrical connections
Full Prefab Fireplace Install
- 20–30 hours labor
- $3,000–$5,000 total labor
- Includes framing, drywall, finish work
Additional Costs
Finishing Materials
- Tile surround: $15–$50/sq ft
- Stone veneer: $25–$75/sq ft
- Mantel: $300–$3,000
Optional Features
- Blower kit: $200–$600
- Thermostat control: $150–$400
- Decorative media (logs/glass): $100–$800
Permits and Regulations
Most jurisdictions require:
- Building permit ($100–$300)
- Gas inspection ($75–$150)
- Clearance certification ($50–$100)
Some areas prohibit ventless units entirely. Check local codes before purchasing.
Maintenance Costs
Annual servicing runs $150–$300 and includes:
- Burner inspection/cleaning
- Vent inspection
- Safety checks
Consider a built-in gas heater for easier maintenance.
Energy Efficiency Considerations
Higher efficiency units cost more upfront but save long-term:
- Standard units: 70–75% AFUE
- High-efficiency: 85–90% AFUE
Look for units with indoor propane space heater technology for better heat output.
Regional Price Variations
Labor costs vary significantly by location:
- Northeast: 15–20% above average
- Midwest: 5–10% below average
- West Coast: 20–25% above average
DIY vs Professional Installation
While some homeowners attempt DIY installs, professional installation is recommended for:
- Gas line work
- Venting through walls/roof
- Electrical connections
Improper installation can void warranties and create safety hazards.
