Answering the question, these outdoor fireplace insert kits and related fire pit inserts deliver efficient heat, easy installation, and stylish visuals for patios, decks, and backyards. The top picks below are best for DIYers seeking ventless or zero-clearance options, outdoor-only setups, and kits that simplify assembly. Each entry explains who benefits most, along with practical considerations to help you choose.
| Product | Best For | Key Benefit |
|---|---|---|
| Duluth Forge Dual Fuel Ventless Gas Fireplace Insert (FDI32R) | Homeowners needing flexible fuel options | Dual fuel, remote control, high efficiency |
| ProCom 32in. Universal Ventless Firebox Insert (PC32VFC) | Zero-clearance installs | Slim profile, versatile with log sets |
| Duluth Forge Ventless Stainless Outdoor Gas Fireplace Insert (DF450SS-L) | Sturdy outdoor fixtures | Stainless build, 24,000 BTU, manual control |
| GRISUN Upgraded 36″ Drop-in Fire Pit Kit | Central outdoor fire tables | All-in-one kit, modern linear flame |
| VEVOR 24 x 8 inch Drop-in Fire Pit Pan | Indoor/outdoor versatility | 120,000 BTU, comprehensive accessory set |
Duluth Forge Dual Fuel Ventless Gas Fireplace Insert

The Duluth Forge FDI32R offers ventless dual-fuel technology, enabling operation on either natural gas or liquid propane. With 32,000 BTU and 99.9% efficiency, it heats up to about 1,500 square feet without external ducting. The included remote with LCD screen supports on/off control and flame adjustments, while a standing pilot enables remote operation even when the main control is not engaged. Realistic 9-piece ceramic logs and a mesh screen enhance the visual appeal. Best for: homeowners who want flexible fuel options and a remote-enabled, high-heat ventless insert for mid-sized outdoor spaces. Caution: ensure gas type compatibility before installation, and verify local venting requirements for outdoor use.
ProCom 32in. Universal Ventless Firebox Insert

The ProCom PC32VFC is a zero-clearance firebox insert with a slim profile, designed for tight spaces. It is approved for zero-clearance installation and can be recessed or paired with a mantel for a custom look. The unit features a raised draw screen, hood, and decorative brick liner to complete the aesthetic. Best for: those renovating a compact fireplace space or creating a custom insert within a cabinet or wall. Caution: installation requires careful attention to vent-free clearance guidelines and proper securing of any decorative components to avoid heat damage.
Duluth Forge Ventless Stainless Outdoor Gas Fireplace Insert (DF450SS-L)

This outdoor model emphasizes durability with a stainless-steel exterior and a 24,000 BTU natural gas heater. A sloped 304 stainless H-burner supports efficient heat distribution, while manual controls let you tailor heat output. Best for: outdoor spaces where weather exposure and durability are priorities, and users who prefer straightforward, manual adjustments over digital features. Limitation: vent-free operation may require supplemental outdoor ventilation considerations in very tight spaces or with sensitive surroundings.
VEVOR 24 x 8 Inch Drop-in Fire Pit Pan

The VEVOR fire pit pan is a versatile choice featuring a 120,000 BTU burner and a complete accessory set, including hoses and a regulator rated by CSA for safety. It comes in multiple sizes (including 24″, 30″, and 36″), allowing flexible indoor or outdoor installation. Best for: DIYers who want a robust burner pan with ready-to-use components and room to scale. Caution: ensure the selected size fits your outdoor space and supports proper airflow to prevent overheating.
RELIANCER 35.5″ Fire Pit Ring Kit

This heavy-duty steel fire pit ring measures 35.5 inches in outer diameter and 31.5 inches inner diameter, designed for outdoor fire pits and social gatherings. It features a high-temperature powder coating and robust 1.2mm tubing to resist deformation. Best for: durable, high-heat outdoor rings that support larger flame zones. Limitation: open-bottom design requires a fire-resistant substrate, such as stones or sand, to protect the ground.
Buying Guide
What should you consider when choosing an outdoor fireplace insert kit?
- Fuel type: Choose ventless gas options for simplicity or consider dual-fuel models if you want flexibility between natural gas and propane.
- Installation style: Zero-clearance and slim-profile inserts fit tight spaces; drop-in fire pit kits suit table or yard setups.
- Heat output: BTU guidance helps size the unit for your space. Larger spaces benefit from higher BTU ratings, while smaller patios need balanced warmth and flame aesthetics.
- Materials and durability: Outdoor applications require weather-resistant housings (stainless steel is often preferred) and corrosion resistance.
- Controls and safety: Remote controls add convenience; manual controls are reliable. Look for certified components and proper venting compatibility for outdoor use.
- Included accessories: Some kits provide hoses, regulators, and wind guards; evaluate whether you’ll need additional pieces for installation.
- Maintenance: Consider ease of cleaning, log set realism, and ash or debris management for ventless systems.
FAQ
- Do outdoor fireplace insert kits require venting? Most ventless models are designed for indoor-ventless use, while outdoor units may not require a chimney. Verify local codes and product specifications.
- Can I install a drop-in fire pit kit myself? Yes, many DIYers install drop-in kits with basic tools, but ensure correct clearance, gas line routing, and safety practices per kit instructions.
- What is BTU and why does it matter? BTU indicates heat output. Choose higher BTU for larger spaces, but avoid oversizing which may waste energy and create excessive heat.
- Are dual-fuel inserts worth it? Dual-fuel offers flexibility for different fuel sources, useful in uncertain gas supply scenarios or for seasonal preferences.
- What maintenance is required? Regular cleaning of logs and burner components, plus inspection of gas connections and seals, helps maintain performance and safety.
- Which material is best for outdoor exposure? Stainless steel and corrosion-resistant finishes tend to be more durable in weather-exposed environments.