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Fire Pit Insert

Picture a clean stone surround, a custom masonry base, or a reimagined backyard fire pit, all that's missing is the right fire pit insert to bring it to life. A gas drop-in insert is the component that transforms a raw build or an outdated fire feature into a reliable, controllable outdoor flame. Whether you're upgrading an existing fire pit or speccing one from the ground up, the insert is where the whole project comes together.

At Fire Pit Surplus, our fire pit smokeless insert collection is built around HPC Fire, one of the most trusted names in gas burner systems and fire feature components. From compact square flat pan inserts designed for custom masonry builds to large-format linear trough systems for modern outdoor spaces, you'll find the right fit here with expert guidance to back it up.

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  • HPC Millivolt Valve Kits Fire Pit Insert HPC
    HPC
    HPC Millivolt Valve Kits
    from $674.00

    Flame modulating Millivolt valve kit with 3” Swivel Flare connection to the main burner. Uses Maxitrol gas valve, 85k Btu that may be controlled ...

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    from $674.00
  • HPC 48" Linear Trough Fire Pit Insert -120VAC Fire Pit Insert HPC
    HPC
    HPC 48" Linear Trough Fire Pit Insert -120VAC
    $4,864.32
    $4,621.10

    Fully Assembled, Commercial Grade, Certified Inserts Sidewall helps with media retention, Pan Lip provides for the recessed burner and blowout box ...

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    $4,864.32
    $4,621.10

Why Choose a Gas Fire Pit Insert?

  • Instant, Controllable Flame. Gas inserts ignite immediately and adjust with a simple turn, no kindling, no ash, no wait. You get a consistent, manageable flame every time you use your outdoor space.

  • Built to Last Outdoors. HPC inserts are constructed from 304 stainless steel, the same grade used in commercial kitchens, so they hold up against moisture, heat cycling, and the elements without rusting or warping.

  • Fits Any Custom Build. Round bowl inserts, square flat pan inserts, and linear trough systems give you the flexibility to match the insert to your surround, not the other way around. These drop-in systems work equally well for retrofit projects and new-construction fire features.

  • Designed for the Long Haul. Outdoor fire features are increasingly central to how homeowners design and use their patios. The National Association of Home Builders (NAHB) found that 73% of design professionals expected outdoor spaces to include built-in features like fire pits or fireplaces. A quality insert is how that investment holds up for years.

Top Fire Pit Inserts for Sale

Best Fire Pit Insert for Off-Grid Installations

HPC Round Bowl Push Button/Flame Sensing Insert

HPC Round Bowl Push Button Flame Sensing Fire Pit Insert

For fire pits without a power supply nearby, this is the standout choice. The HPC Round Bowl Push Button Insert uses a push-button flame sensing system with a standing pilot and thermocouple, no 120VAC required. It's built for the homeowner replacing a worn burner in an existing round surround or the contractor speccing a remote gas installation where running conduit isn't practical.

  • Output: 140,000 BTUs; available in 31×31" (PENTA31-FPPK-FLEX) and 37×37" (PENTA37-FPPK-FLEX)

  • Ignition: push-button / flame sensing with thermocouple, no electricity required

  • #304 stainless steel: fully assembled with 36-inch whistle-free flex line and control box; NG or LP

Best Square Fire Pit Insert for Custom Builds

HPC 24" Square Flat Pan Insert – 120VAC

HPC 24 Inch Square Flat Pan Fire Pit Insert 120VAC

A purpose-built solution for smaller square masonry or concrete fire features, it arrives fully assembled with an 18-inch stainless PENTA burner, an 18-gauge 304 SS valve box, and certified electronic hot-surface ignition. It fits cleanly into a 24-inch square interior without requiring custom modifications, a reliable choice for contractors and homeowners building a tighter fire feature.

  • Output: 125,000 BTUs; dimensions 24×24×11.75", 36 lbs

  • Electronic hot-surface ignition, 120VAC; natural gas or liquid propane

  • 18-gauge 304 stainless steel pan and valve box; includes 18-inch stainless PENTA burner

Best Linear Fire Pit Insert for Modern Patios

HPC 60" Linear Trough Insert – 120VAC

HPC 60 Inch Linear Trough Fire Pit Insert 120VAC

It delivers the long architectural flame line that modern outdoor design calls for. At 60 inches with a 49-inch T-burner and a 16-gauge stainless valve control box, it gives you a high-impact linear feature at a meaningful step below the 72-inch tier, a smart fit for serious outdoor living spaces that don't need to go to maximum scale.

  • Output: 125,000 BTUs; dimensions 60×7.9×14.25", 86 lbs

  • Electronic hot-surface ignition, 120VAC; natural gas or liquid propane

  • 18-gauge 304 stainless steel; includes 49-inch T-burner and 16-gauge SS valve control box

How to Choose the Right Insert for Fire Pit

Power Availability

  • Push-button / flame sensing: If your fire pit location doesn't have access to a 120VAC outlet, a push-button flame sensing insert is the right call. These systems use a standing pilot with thermocouple, no wiring, no junction box, no conduit run.

  • Electronic ignition (120VAC): For builds with a dedicated electrical connection, electronic hot-surface ignition gives you cleaner operation and a more automation-ready setup. These inserts are also compatible with remote and timer controls.

Shape

  • Round / bowl: The natural choice for traditional circular fire pits and poolside installations. Round inserts work well in stone, concrete, or prefabricated round surrounds.

  • Square / flat pan: Ideal for geometric or modern masonry builds. Square inserts fit cleanly into concrete block, paver, or cast-stone surrounds with minimal adaptation.

  • Linear / trough: The right format for elongated outdoor spaces, lounge seating areas, and contemporary designs where the long horizontal flame line is the focal point.

Size and Scale

  • Compact (24"): Best for smaller custom builds or fire table inserts with a tight interior. The 24-inch square insert fits surrounds where a larger burner pan would crowd the media.

  • Mid-range (31"–37"): The most versatile round insert sizes. These fit the majority of standard fire pit surrounds and balance flame output with proportional scale.

  • Statement (60"+): For large patios, elevated outdoor lounges, and high-impact linear features. At 60 inches, you're designing a centerpiece, plan your seating arrangement and media fill around the length of the flame.

Fuel Type

  • Natural gas: The best choice for permanent installations with an existing gas line. Running costs are lower, and you'll never run out mid-evening.

  • Liquid propane: A practical option when a gas line isn't available at the build site. All HPC inserts in this collection are offered in both NG and LP configurations, choose the fuel type that matches your hookup when ordering.

About HPC Fire

Hearth Products Controls, known in the industry as HPC Fire, is one of the most respected manufacturers of gas burner systems, fire pit smokeless inserts, and fire feature components in North America. Their engineering focus has always been on the performance and safety of the components inside the fire feature, not just the outer aesthetics.

Fire Pit Surplus carries HPC because their products hold up. From the burner pan to the valve control box, each component ships fully assembled and ready to drop into a custom build, a masonry surround, or a retrofit project, without modification.

Fire Pit Insert Ideas for Every Build

For Retrofitting an Existing Fire Pit

Retrofitting an Existing Fire Pit with HPC Insert

If your current fire pit is running on an aging burner or outdated ignition system, a drop-in replacement insert is often the cleanest solution. The HPC round fire bowl insert drops into most standard round surrounds and brings current ignition technology without requiring a full rebuild.

For Custom Masonry and Concrete Builds

HPC Insert for Custom Masonry and Concrete Fire Pit Build

Contractors and designers building a fire feature from scratch around a concrete block or paver surround will find the square flat pan insert the most straightforward fit. It sizes to the interior opening, arrives fully assembled, and pairs naturally with the broader selection of fire pit kits available at Fire Pit Surplus.

For Modern Linear Outdoor Spaces

HPC Linear Trough Insert for Modern Outdoor Spaces

A 60-inch linear trough insert is the right choice when the goal is a clean, elongated flame line along a seating wall, an outdoor lounge, or a terrace edge. The architectural scale of this format reads best in contemporary or transitional patio designs where a round fire pit would feel out of place.

For Covered Patios or Off-Grid Setups

HPC Push Button Insert for Covered Patios and Off-Grid Fire Pit Setups

When a fire pit sits at the far end of a yard, on a deck without power, or in a covered patio where running conduit isn't practical, the push-button flame sensing insert keeps the project simple. No electrical rough-in required, just the gas supply and the insert.

Fire Pit Ring Insert FAQs

What is a fire pit insert, and how is it different from a complete fire pit?

The Insert for fire pit is the gas burner and control system that drops into a surround or enclosure; it's the functional core, not the enclosure itself. You build or supply the surround; the insert provides the flame, ignition, and gas controls.

Do I need electricity to run a fire pit ring insert?

Not always. Push-button flame sensing inserts run without any electrical connection. Electronic ignition models require a 120VAC outlet. Choose based on whether power is available at your fire pit location.

How do I choose between natural gas and propane for a fire pit insert?

Choose natural gas if you have an existing gas line near the build site; it's the lower-cost, permanent option. Liquid propane works anywhere a tank can be positioned nearby, making it the right call when a gas line isn't available.

What's the difference between push-button ignition and electronic ignition on a gas insert?

Push-button ignition uses a manual spark with a standing pilot and thermocouple, no power needed. Electronic hot-surface ignition requires 120VAC and delivers a cleaner, more automated start with better compatibility for remote and timer systems.

Can I install an insert for Fire pit in an existing surround or fire pit?

Yes, that's exactly what these drop-in inserts are designed for. Measure your interior opening, match it to the insert dimensions, confirm your fuel type, and select the ignition system that fits your power situation. Most installs benefit from a licensed gas technician handling the final hookup.

Why Buy Your Fire Pit Inserts from Fire Pit Surplus

Fire Pit Insert Installed on Deck

Fire Pit Surplus is the right partner for your build, whether you're a homeowner upgrading a backyard fire pit or a contractor speccing a custom gas feature.

  • Price Match Guarantee. Get the best value on HPC fire pit inserts and components; we'll match any competitor's price.

  • Fast & Free Shipping. Every insert ships quickly and securely, with no hidden freight charges on your order.

  • Expert Support. Real product knowledge from people who understand gas fire features, before, during, and after your build.

  • Authorized HPC Dealer. Every insert ships as a genuine HPC product with full manufacturer warranty, no grey market, no substitutions.

  • Flexible Financing. Pay over time so your custom fire feature stays on budget without compromise.

The Right Insert Makes the Difference

A well-chosen fire pit insert is what turns a good design into a great one. Whether you're retrofitting a worn-out burner, building a custom masonry fire feature from scratch, or designing a modern linear statement for a high-end patio, the right insert makes the difference between a fire feature that works and one that lasts.

Browse the full collection and find the insert that fits your build, your fuel source, and your outdoor vision.