Outdoor Gas Fireplace Buying Guide: Built-In and Freestanding

An outdoor gas fireplace transforms your patio into an upscale resort-style retreat. Unlike fire pits, which are fun but utilitarian, a gas fireplace is an architectural statement—one that adds real estate value, extends your outdoor season, and creates a focal point that draws everyone outside. But there's more to choosing a gas fireplace than picking a pretty model. In this guide, we'll cover fireplace types, venting systems, BTU ratings, materials, installation costs, and the key differences between premium brands like Fire Magic, TrueFlame, and Summerset.

Single-Sided vs. See-Through Gas Fireplaces

The first decision is how you want the flames positioned. Single-sided and see-through fireplaces deliver different aesthetics and serve different purposes.

Single-sided (traditional) fireplaces: The firebox faces outward in one direction only. Flames are visible only from the side you're sitting on. This is the most common style and the most affordable.

Design characteristics:

• Works against any wall or as a standalone feature
• Maximum heat output is directed toward the seating area
• Cleaner, simpler aesthetic (familiar and classic)
• More options in this style from every brand
• Better draft and venting characteristics (heat escapes straight up)

Best for: Walls, patio enclosures, and situations where you want to anchor your entire seating area to face the fireplace.

See-through (two-sided) fireplaces: The firebox has glass or flame view openings on two sides. Flames are visible from both directions—stunning for separating two seating zones or positioning the fireplace as a true island feature.

Design characteristics:

• More dramatic and luxurious appearance
• Creates visual connection across a space (useful for dividing zones)
• Requires more sophisticated venting and draft management
• Heat output goes both directions (less concentrated than single-sided)
• More expensive than single-sided models
• Requires expert installation—improper venting kills the appeal

Best for: Open floor plans, dividing a large patio into zones, and showcasing a stunning architectural feature.

Brands like Fire Magic and TrueFlame excel at both styles. Single-sided fireplaces are their bread and butter; see-through options are their statement pieces.

Venting Systems: Mastering Heat and Smoke

Venting is where many homeowners get confused—and where poor installations create disappointing results. A gas fireplace needs proper air intake and exhaust to function safely and perform well.

Direct vent (sealed combustion): This is the safest and most efficient option. A sealed chamber draws outside air, burns gas cleanly, and vents exhaust directly outside through a single, insulated vent pipe. No air from your patio is used for combustion.

Advantages:

• Most efficient (nearly 90% of heat goes into your space, not the flue)
• Safest for covered patios and enclosed spaces
• No drafts sucking warm air out of your patio
• Cleaner burn, less odor
• Can be installed against exterior walls or chimneys

Disadvantages:

• Requires venting penetration (wall or roof)
• More expensive than vent-free options
• Limits placement flexibility

Vent-free (ventless) fireplaces: Gas burns in an open firebox with no venting outside. The fireplace draws all combustion air from your patio and releases all exhaust into the space.

Advantages:

• No venting required (easy installation almost anywhere)
• More affordable than direct vent
• Maximum placement flexibility
• All heat stays in your patio (useful in cold climates)

Disadvantages:

• Less efficient (more heat is wasted)
• Can produce odors or fumes if not properly maintained
• Not recommended for enclosed spaces or patios with poor air circulation
• May violate local codes (check before installing)
• Moisture from combustion stays in your space

Our recommendation: Direct vent for covered patios, enclosed spaces, or permanent installations. Vent-free for open, well-ventilated patios where codes allow. Most premium brands (Fire Magic, TrueFlame, Summerset) offer both options.

BTU Output: How Much Heat Do You Need?

BTU (British Thermal Unit) measures heat output. More BTUs doesn't always mean better—you need the right amount for your space and climate.

General guidelines:

• 10,000-20,000 BTU: Smaller patios, intimate spaces, mild climates
• 25,000-40,000 BTU: Medium patios (300-500 sq ft), moderate climates, groups of 6-10 people
• 50,000-75,000 BTU: Large patios or spaces that need significant heat
• 80,000+ BTU: Very large patios or commercial-grade installations

Factors affecting BTU needs:

• Patio size: Bigger spaces lose heat faster and need more output
• Climate: Cold climates need more BTU than mild ones
• Coverage: Covered patios retain heat better than open ones
• Wind exposure: Windy areas need higher BTU to overcome heat loss
• Insulation: Walls, fences, or privacy screens help retain heat
• Time of year: You might not need 50,000 BTU in spring, but you'll want it in October

Practical example: A 400-square-foot covered patio in a moderate climate with good wind protection might need 30,000-40,000 BTU. The same patio in Minnesota might need 50,000+. An open patio of the same size might need less heat output because breezes keep it feeling fresh, not cold.

Brands like Fire Magic and Summerset offer a range of BTU options. Don't overbuy—excessive heat makes a patio uncomfortable and wastes fuel.

Materials and Construction Quality

Gas fireplaces face serious weather exposure. Materials matter for durability and longevity.

Firebox and internal components:

• Stainless steel: The gold standard. Resists corrosion, salt air, and rust. Most expensive but lasts indefinitely.
• Powder-coated steel: Affordable, attractive, but the coating can chip or peel. Touch-ups are difficult.
• Cast iron inserts: Classic look, excellent heat retention, but rust is a constant battle in moist climates.
• Ceramic fiber liners: Insulate the firebox and distribute heat. Quality liners last 10+ years; cheap ones deteriorate faster.

Exterior finishes:

• Stainless steel surrounds: Premium appearance, durable, heat-resistant. Brands like Fire Magic use it extensively.
• Decorative stone or brick veneer: Aesthetic appeal but can trap moisture behind it. Ensure proper ventilation and drainage.
• Tile or slate surrounds: Elegant and durable, but grout can fail. Quality installation matters.
• Concrete or stucco finishes: Budget-friendly, customizable, but can crack or stain. Reseal regularly.

Glass and doors:

• Tempered glass doors: Standard for safety. Some models have glass that swings open for wood-burning or hybrid functionality.
• Crystal or reflective glass: Premium finishes that make flames more visible and dramatic.
• High-iron (low-iron) glass: Minimizes color distortion so you see flames more clearly.

Grates and interior accessories: Premium brands use stainless or high-quality ceramic grates that don't corrode. Cheap grates rust quickly and look shabby.

Installation Requirements and Costs

Installation is a critical factor in fireplace performance and longevity. Professional installation is not optional for built-in or large fireplaces.

Built-in gas fireplace installation:

• Requires framing, venting preparation, electrical, and gas lines
• Professional installation: $2,000-$5,000+ (depending on location and complexity)
• DIY-friendly option: Freestanding units with minimal venting
• Permits required in most jurisdictions (add $300-$1,000)
• Gas line installation: $500-$2,000 depending on distance and existing infrastructure

Freestanding gas fireplace (fire table or insert style):

• Minimal installation—often just unboxing and connecting a propane tank
• No venting, framing, or gas line required (for propane models)
• Can be moved or repositioned easily
• Installation cost: Minimal ($0-$500 for basic setup)

When to call a pro:

• Any built-in installation (always)
• Natural gas lines (always—local code and safety requirements)
• Complex venting or roofline penetrations
• Structural modifications (framing changes)
• Any situation where you're unsure about local codes

Brands like Fire Magic, TrueFlame, and Summerset have dealer networks and can recommend certified installers in your area. Use them—their warranty often requires professional installation.

Single-Sided Fireplace Models and Price Ranges

Entry-level single-sided (direct vent): $3,000-$6,000

Solid performers from brands like TrueFlame or Summerset. 25,000-40,000 BTU, stainless steel, good flame quality. Suitable for most residential patios.

Mid-range single-sided: $6,000-$12,000

Fire Magic, Coyote, and higher-end TrueFlame models. Advanced controls, better materials, larger sizes, higher BTU options. These are the sweet spot for quality and value.

Premium single-sided: $12,000-$25,000+

Top-tier Fire Magic models (like their Aurora or Echelon lines), custom builds, exotic materials, extensive customization. These are investment pieces that define your outdoor space.

See-Through (Two-Sided) Fireplace Models and Costs

Entry-level see-through: $5,000-$10,000

TrueFlame or Summerset two-sided models. Simpler venting, smaller sizes, but stunning visual impact.

Mid-range see-through: $10,000-$20,000

Fire Magic and premium TrueFlame two-sided fireplaces. Larger sizes, sophisticated venting, premium materials.

Premium see-through: $20,000-$40,000+

Top Fire Magic models like the Echelon or Aurora series in see-through configuration. These are statement pieces designed by architects and premium builders.

Freestanding and Tabletop Options

If built-in installation is too complex or expensive, freestanding options offer flexible, elegant alternatives.

Fire tables (propane): Low-profile, table-height units that blend seating and fire. Brands like The Outdoor Plus and Summerset make excellent models.

Price range: $2,000-$8,000

• Easy setup (no installation required for propane versions)
• Can be repositioned or moved seasonally
• Doubles as a functional table
• Good for smaller patios or tight layouts

Freestanding fireplace inserts or stoves: Standalone units that sit on your patio or deck. Gas or wood-burning options.

Price range: $3,000-$10,000

• Works with vent-free or simple venting
• Portable (though heavy)
• Works well in temporary or rental situations

Outdoor fireplace inserts (for existing fireplaces): If you have a traditional brick or stone fireplace, a gas insert can convert it safely and efficiently.

Price range: $1,500-$4,000 (insert only; installation extra)

Brand Comparison: Fire Magic, TrueFlame, and Summerset

Fire Magic: The luxury brand. Premium materials (stainless heavily), sophisticated controls, custom options. Prices are highest, but warranty and resale value are strong. Best for high-end builds and permanent installations.

TrueFlame: The value-quality balance. Solid construction, good flame quality, reasonable pricing. Excellent options in mid-range. Great for DIY-friendly freestanding models.

Summerset: Versatile lineup from budget to premium. Strong in freestanding and portable options. Good warranty. Excellent for first-time buyers exploring the category.

(Other quality brands carried by Living Outdoorsy include Coyote, AOG, and Bromic, which offer specialized solutions depending on your needs.)

Natural Gas vs. Propane: Which Fuel?

Natural gas: Hardwired connection to your home's gas line. Cheaper per BTU, no tank refills, unlimited supply.

Advantages:

• No propane tank management or refills
• Lower operating costs long-term
• Permanent, integrated installation

Disadvantages:

• Requires natural gas line (not available in all areas)
• Professional installation required
• Less flexibility in placement
• Higher upfront installation cost

Propane: Tank-fed, portable for freestanding units, flexible placement.

Advantages:

• Works anywhere (no gas line needed)
• Freestanding units are portable
• Easy installation for many models
• Readily available tank refills

Disadvantages:

• Higher operating cost per BTU
• Tank refills and management required
• Storage space needed for spare tanks
• Empty tank at inconvenient times

Recommendation: Natural gas for permanent built-in installations; propane for freestanding units and flexibility.

Add-On Features and Controls

Remote ignition: Press a button to ignite the fireplace. Standard on most models. Propane models often have battery-powered ignition (manual matches are outdated).

Thermostatic controls: Automatic ignition when temperature drops below a set point. Useful for moderating heat or switching on/off based on comfort.

Bluetooth or smart controls: Control ignition, flame height, and sometimes lighting from your phone. Premium Fire Magic and TrueFlame models offer this.

Integrated lighting: LED lights around the fireplace or in the surround create ambient lighting independent of the fire. Adds luxury and extends usability.

Adjustable flame height: Some models let you dial in flame intensity. More flame = more heat and drama; less flame = a quieter, less dominant look.

Ceramic logs or lava rock styling: Aesthetic options that affect how the fire looks. Premium options look more realistic; budget versions look more artificial.

FAQ: Outdoor Gas Fireplace Questions

Is a gas fireplace cheaper to run than a fire pit?

Propane gas is generally more expensive per BTU than wood, but you're buying convenience, control, and cleanliness. For extended use, natural gas (hardwired) is cheaper than propane tanks.

Can I install a gas fireplace myself?

Freestanding propane models, yes (if you're comfortable connecting a tank). Built-in fireplaces or natural gas installations require professional help. Local codes often mandate professional installation.

How long do outdoor gas fireplaces last?

Quality models from Fire Magic or TrueFlame last 15-25 years with proper maintenance. Cheaper models might degrade faster. Regular cleaning and inspection extend lifespan.

Can I use a gas fireplace in bad weather?

Wind is your enemy—high winds blow flames and reduce efficiency. Rain won't damage a fireplace, but it will cool it down. Covered patios are ideal. Use outdoor fireplace covers when not in use.

What's the difference between a fireplace and a fire table?

Fireplaces are vertical, wall-mounted or island-style features that are primarily aesthetic and functional for warmth. Fire tables are low-profile, usually table-height, and serve as both a fire feature and a surface.

Ready to add a gas fireplace to your patio? Visit Living Outdoorsy to explore gas fireplaces, fire tables, and outdoor heating from Fire Magic, TrueFlame, Summerset, and more. Our experts can help you choose the right model, size, and installation approach for your space.