Choosing between grill models that include a dedicated auxiliary burner can feel like a trade-off between raw cooking power and the convenience of preparing sauces, sides, or seafood without retreating to the indoor kitchen. A BBQ grill with a side burner delivers the capacity to sear a steak on the main grates while simultaneously simmering a glaze or sautéing vegetables on the outer station, but the BTU output on that side burner and the material quality of the main cooking chamber determine whether the unit actually performs under heavy use.
I’m Mohammad Maruf — the founder and writer behind AirfryerBite. I have spent years analyzing outdoor cooking hardware, studying heat distribution systems, burner configurations, and cabinet-grade materials across hundreds of grill specs to isolate the models that deliver real-world searing performance and long-term durability rather than just high BTU claims.
After comparing more than a dozen current models with a focus on side burner heat output, total cooking area, and construction integrity, this guide delivers the top-tier advice you need to identify the best bbq grill with side burner for your outdoor cooking habits and backyard setup.
How To Choose The Best BBQ Grill With Side Burner
A side burner expands your cooking capabilities beyond basic grilling, but not all side burners are built alike. Low-BTU side burners struggle to hold a steady simmer for sauces, while high-output infrared burners can sear directly on the side station. Matching the grill’s main cooking area, burner count, and construction materials to your typical meal size and frequency is the fastest way to avoid an underpowered purchase.
Side Burner BTU Output and Burner Technology
The side burner’s heating power is measured in BTUs. A standard side burner around 10,000-12,000 BTU is adequate for boiling water or sautéing, but you need 14,000 BTU or more, especially a dedicated infrared side burner, to achieve restaurant-style searing temperatures. Pay attention to whether the burner is an open gas ring or an infrared element — infrared delivers higher temperatures in less time and is better for sauces that need rapid heat.
Main Cooking Area and Grill Grate Material
Total square inches of cooking space determines how much food you can cook at once. Primary cooking area — not including the warming rack — is what matters for burgers, steaks, and direct grilling. Porcelain-coated cast iron grates retain and distribute heat more evenly than stainless steel or plain steel grates, but they require careful handling to avoid chipping the enamel. Stainless steel grates are lighter and rust-resistant but don’t hold heat as well for searing.
Cabinet Construction and Weather Resistance
Grills live outdoors year-round in many climates. Look for a stainless steel frame or cabinet with a high corrosion resistance grade, ideally 304 stainless steel for the outer housing and main burners. Painted or powder-coated steel cabinets offer cost savings but may show rust sooner in coastal or high-humidity environments. Cast-aluminum cookboxes, like those found on Weber Spirit and Genesis models, resist rust and peeling better than painted steel lids.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Monument Grills 4+2 | Premium Mid-Range | Searing & large parties | 72,000 BTU total, IR sear burner | Amazon |
| Weber Spirit E-435 | Premium | Everyday grilling + sauces | 4 burners, 2 Boost burners | Amazon |
| Napoleon Rogue PRO 525 | Premium | Infrared side searing | IR side burner, backlit knobs | Amazon |
| Napoleon Prestige 500 | Flagship | Rotisserie + infrared side | IR rear/side, rotisserie kit inc. | Amazon |
| Spire 6-Burner Built-In | Premium Built-In | Outdoor kitchen integration | 904 sq in, 73,000 BTU | Amazon |
| Weber Genesis E-325 | Premium | Even heat across grates | PureBlu burners, 641 sq in | Amazon |
| Sophia & William 6-Burner | Mid-Range | Dual-sided cooking | 740 sq in, reversible grates | Amazon |
| Captiva Designs 6-Burner | Mid-Range | Family-size batch cooking | 665 sq in, cast iron grates | Amazon |
| Spire 5-Burner Built-In | Premium Built-In | Compact built-in installation | 30 inch, rear burner | Amazon |
| Charbroil Performance 4-Burner | Entry-Level | Budget-friendly starter grill | FlavorMax system, 11K side | Amazon |
| MASTER COOK 4+1 Burner | Entry-Level | First side burner experience | 52,000 BTU total, piezo ign. | Amazon |
In‑Depth Reviews
1. Monument Grills Larger 4+2 Burner Propane Grill
Monument Grills delivers a 72,000 BTU total system with four 304 stainless steel main burners, a dedicated side burner, and a high-heat infrared sear burner on the side station. The 4+2 configuration means you can run the main grates at a moderate temperature for chicken while the infrared burner sears a steak or boils a pot of water in minutes. The primary cooking area of 510 square inches plus a 190 square-inch warming rack brings the total to 700 square inches, making this one of the most capacity-efficient designs at its tier.
Porcelain-coated cast iron grates sit over stainless steel flame tamers that distribute heat evenly and reduce flare-ups by funneling grease away from the burners. The ClearView lid window lets you monitor the cooking surface without lifting the lid and losing heat, and the built-in knob lights illuminate the controls for nighttime grilling. The cabinet is made from stainless steel with cast iron frame elements, giving it a stable stance on uneven patio surfaces.
Assembly is moderately involved given the 4+2 burner architecture, but the instructions are clear and the components fit precisely. The lid-mounted thermometer is accurate and responsive, and the side burner produces a strong, adjustable flame that handles anything from a delicate simmer to a full rolling boil. For users who need powerful side cooking and a large main grilling surface from a freestanding unit, this model strikes the best balance in the mid-premium range.
Why it’s great
- Infrared side burner reaches searing temperatures quickly
- Cast iron grates with flame tamers for even heat distribution
- Knob lights and ClearView lid enhance nighttime usability
Good to know
- Assembly requires two people for the cabinet section
- Cast iron grates need immediate cleaning to avoid food residue buildup
2. Weber Spirit E-435 Natural Gas Grill
Weber’s Spirit E-435 delivers a refined cooking experience with four main burners that include two Boost burners for the largest Sear Zone in its class, unleashing 40% more power over the standard burners for aggressive steak marks. The side burner on this natural gas model provides extra surface for sauces, sautéed sides, or boiling, and the overall 428 square-inch primary cooking area is optimized for family-sized meals rather than crowd-feeding. The porcelain-enameled cast iron grates retain heat well and produce consistent grill marks across the entire surface.
The FLAVORIZER bars catch drippings and vaporize them back into the food, adding smoky flavor while funneling grease away from the burners to prevent flare-ups. The cast-aluminum cookbox is rust-resistant and stands up to weather better than painted steel cabinets, and the Snap-Jet ignition lights each burner individually with one hand. The hammertone metal side tables resist scratches and provide a stable platform for prep work next to the side burner.
Natural gas hookup requires a dedicated line, but the performance consistency makes it worthwhile for users who can connect it permanently. The 10-year limited warranty on the cookbox and burners signals confidence in longevity, and the cabinet with door hides the propane tank if you ever convert to liquid propane with a separate kit. For buyers who prioritize build quality, even heat distribution, and a reliable side burner from a brand with decades of support, this is the strongest premium choice.
Why it’s great
- Boost burners deliver 40% more power for intense searing
- Cast-aluminum cookbox resists rust and peeling
- 10-year warranty covers key components
Good to know
- Natural gas connection limits portability
- Cooking area is on the smaller side for large gatherings
3. Napoleon Rogue PRO 525 Propane Gas Grill
Napoleon equips the Rogue PRO 525 with four main burners and a dedicated infrared side burner that functions as a sear station for steak-house-quality crust. The side burner uses infrared heat that reaches searing temperatures faster than a standard gas ring, and it doubles as a cooking zone for sauces or sides when turned down. The 517.5 square-inch total cooking area uses WAVE stainless steel cooking grids that distribute heat evenly and are virtually maintenance-free compared to cast iron.
The rust-resistant stainless steel frame and powder-coated lower cabinet are designed to withstand outdoor exposure without showing corrosion. The white LED backlit control knobs make nighttime grilling safer and more convenient, and the lid design includes a view window to check food without lifting. The side tables offer ample prep space, and the side burner is positioned at a comfortable height for access while the main grates are in use.
Assembly is straightforward for a grill of this size, and the propane hose and regulator are included for a standard 20 lb tank. The infrared side burner requires a brief learning curve to avoid overshooting temperatures on delicate sauces, but once dialed in it performs consistently. For home cooks who want infrared searing capability directly on the side station in a mid-premium package, the Rogue PRO 525 delivers a compelling combination of power and build quality.
Why it’s great
- Infrared side burner reaches searing temps fast
- Backlit knobs improve visibility at night
- Stainless steel frame resists rust over time
Good to know
- Infrared heat requires adjustment for simmering
- Stainless steel cooking grids don’t hold heat like cast iron
4. Napoleon Prestige 500 RSIB Propane Gas Grill
The Napoleon Prestige 500 RSIB brings a full arsenal of cooking zones: four stainless steel main burners producing 48,000 BTU, a dedicated infrared side burner that reaches 1,800°F in 30 seconds, and an 18,000 BTU infrared rear burner for rotisserie cooking. The 500 square-inch primary cooking area is supported by a 260 square-inch warming rack and a 140 square-inch side burner surface, giving you 900 square inches of combined capacity. The rotisserie kit is included, so you can start spit-roasting a turkey or whole chicken right out of the box.
The JETFIRE ignition system fires each main burner with a flame thrower, and the backup cross-channel between burners allows them to light each other off — meaning you never need a lighter or matches. The stainless steel WAVE cooking grids are designed to distribute heat evenly and prevent food from sticking, and the stainless steel frame with painted lower cabinet provides a high-end appearance that matches outdoor kitchen islands. The side burner is an infrared element, so it delivers concentrated heat for searing seafood or reducing sauces rapidly.
This is a substantial investment in cooking capability, and the build quality justifies the cost with heavy-duty hinges, a robust rotisserie motor, and precise temperature control across all zones. The main burners respond quickly to knob adjustments, and the infrared burners hold steady temperatures even on windy days. For the serious outdoor chef who wants rotisserie, infrared searing, and a powerful side burner all in one integrated unit, the Prestige 500 is the definitive flagship option.
Why it’s great
- Infrared side burner reaches 1,800°F rapidly
- Rotisserie kit is included with the purchase
- JETFIRE ignition with backup cross-channel lighting
Good to know
- Premium price point reflects the multi-burner infrared system
- Cabinet is painted steel rather than full stainless
5. Spire Premium 6 Burner Built In Gas Grill
Spire’s 6-burner built-in gas grill is designed for outdoor kitchen islands, delivering 73,000 BTU across six main burners plus a rear burner for rotisserie cooking. The total cooking surface reaches 904 square inches, making this one of the largest grills in the list for batch cooking and entertaining. The 304 stainless steel grates are non-stick and rust-resistant, providing a long service life without the chipping risk of enameled cast iron.
The 10,000 BTU per burner configuration allows for independent zone cooking — you can sear two sections, roast in the middle, and keep the outer burners at low heat for food holding. The rear burner is ideal for rotisserie attachment (sold separately), adding vertical cooking capability for whole chickens and roasts. The stainless steel frame and polished finish are designed for permanent outdoor kitchen installation, and the dual fuel compatibility means you can use natural gas or propane with the appropriate conversion kit.
Assembly involves mounting the grill head into a built-in cutout or compatible island frame, and the wiring for the electronic ignition is straightforward. The burners respond quickly to knob adjustments, and the even heat distribution across the 304 stainless steel grates prevents cold spots. For homeowners building a dedicated outdoor cooking station who need a massive cooking surface and a rear burner for rotisserie, this is the most compelling large-format built-in option.
Why it’s great
- 904 sq in total cooking area handles large gatherings
- 304 stainless steel grates resist rust and cracks
- Rear burner adds rotisserie capability
Good to know
- Designed for built-in installation, not freestanding
- Rotisserie kit must be purchased separately
6. Weber Genesis E-325 Liquid Propane Gas Grill
Weber’s Genesis E-325 uses three PureBlu burners with a unique tapered design that produces a consistent flame across the entire grilling surface, minimizing hot spots and cold corners. The extra-large sear zone provides intense heat for searing multiple steaks simultaneously, while the 641 square-inch total cooking area (including the warming rack) accommodates family meals with room to spare. The porcelain-enameled cast iron grates retain heat for excellent sear marks, and the FLAVORIZER bars catch drippings to produce smoke flavor while protecting the burners from flare-ups.
The grease management system is integrated into the cookbox with a pull-out tray that slides out for quick disposal, making cleanup simpler than most grills in this segment. The side tables provide sufficient prep space, and the warming rack keeps food warm or toasts buns while the main course finishes grilling. The cabinet encloses the propane tank and accessories, and the overall footprint is manageable for most patios or decks.
The WEBER CRAFTED outdoor kitchen collection compatibility means you can add a pizza stone, griddle, or Dutch oven with the appropriate frame kit (sold separately), expanding the grill’s functionality beyond direct grilling. The ignition system lights reliably with a single press of the knob, and the lid thermometer is accurate across the temperature range. For buyers who value even heat distribution, easy grease disposal, and the flexibility to expand cooking styles later, the Genesis E-325 is the most versatile premium propane option without a side burner built into the cabinet — though it can be paired with a standalone side burner accessory.
Why it’s great
- PureBlu burners deliver consistent even heat across the grates
- Grease management system with pull-out tray simplifies cleanup
- Compatible with WEBER CRAFTED cooking accessories
Good to know
- Side burner is not integrated into the main body
- Three burners may feel limiting for zone cooking at high volume
7. Sophia & William 6-Burner Propane Gas BBQ Grill
Sophia & William equips this 6-burner propane grill with reversible porcelain-enameled cast iron grates that offer a traditional sear-mark side on one face and a flat-top griddle surface on the other, enabling you to cook pancakes, eggs, or stir-fry on the same grill that sears steaks. The 740 square-inch total cooking area splits into 520 square inches of primary cooking surface and a 220 square-inch warming rack, providing generous space for larger parties. The six main burners plus a dedicated side burner give you multiple heat zones for simultaneous cooking of different foods.
The enameled chamber delivers superior heat retention and distribution compared to bare steel chambers, and the rust-resistant coating prevents corrosion over time. The slide-out grease tray with removable drip pan makes cleaning fast — the tray tilts so grease flows directly into the hanging collection box. The side burner operates independently at up to 12,000 BTU and can handle sauces, sides, or boiling water while the main grates run at different temperatures.
Assembly requires attention to the cabinet frame and burner alignment, but the included hose and regulator connect to a standard 20 lb LP tank. The overall dimensions of 62.2 inches wide require a generous patio space. For grillers who want to cook breakfast, flat-top dishes, and traditional grilled proteins on one machine without an additional griddle pan, the dual-function grate design and large side burner make this the most versatile mid-range option.
Why it’s great
- Reversible grates provide both grill marks and flat-top cooking
- Enameled chamber improves heat retention and resists corrosion
- Side burner delivers strong 12,000 BTU output
Good to know
- Wide footprint requires ample patio space
- Cast iron grates are heavy and need careful handling when flipping
8. Captiva Designs 6-Burner Propane Gas BBQ Grill
Captiva Designs provides a 6-burner configuration that totals 65,800 BTU across the main burners plus a side burner, with a 665 square-inch total cooking area comprising 500 square inches of primary porcelain-enameled cast iron grates and a 165 square-inch warming rack. The porcelain enamel coating on the cast iron grates combines the heat retention of traditional cast iron with a non-stick, rust-resistant surface that is less prone to cracking than uncoated iron. The six burners are individually controlled, giving you the flexibility to run separate heat zones across the main cooking surface.
The full-size slide-out grease tray is designed with a tilt so grease flows directly into a hanging collection box, simplifying post-cook cleanup. The frame is made from alloy steel with a finished exterior, and the cabinet structure provides storage for a propane tank and accessories. The fixed slots on both sides of the cooking chamber are ready for a rotisserie kit (sold separately), adding the ability to cook large cuts of meat like turkey or whole roasts.
Assembly is manageable with basic tools, and the included hose, lid-mounted thermometer, and tool hooks add convenience. The side burner operates at enough power to boil water for corn or heat a saucepan of barbecue sauce while the main burners handle the protein. For family cooks who want a large cast iron cooking surface, a functional side burner, and rotisserie-ready design at a competitive mid-range price, this grill delivers solid value without sacrificing capacity.
Why it’s great
- Porcelain-enameled cast iron grates offer non-stick durability
- Slide-out tilted grease tray simplifies cleanup
- Rotisserie-ready slots for larger cuts of meat
Good to know
- Rotisserie kit is not included
- Alloy steel frame may not resist corrosion as well as stainless
9. Spire Premium 5 Burner Built In Gas Grill
Spire’s 5-burner built-in gas grill is sized at 30 inches wide, making it a practical choice for outdoor kitchen islands where space is at a premium. The five main burners each produce 10,000 BTU for a total of 50,000 BTU, joined by a 13,000 BTU rear burner ideal for rotisserie cooking. The 750 square-inch total cooking surface includes high-end 304 stainless steel grates that are non-stick, rust-resistant, and distribute heat evenly across the primary grilling area.
The stainless steel frame construction is designed for permanent outdoor installation, and the dual fuel compatibility allows switching between propane and natural gas with the appropriate conversion kit. The rear burner provides flexibility for whole chicken or roast cooking without occupying the main grates, and the electronic ignition fires each burner reliably with a single press. The polished stainless steel finish matches the aesthetic of premium outdoor kitchen components.
Installation requires a properly sized cutout in an island or built-in frame, and the wiring for the ignition system is straightforward for a professional installer or experienced DIY user. The burners respond quickly to adjustments, and the 304 stainless steel grates are lighter than cast iron and easier to clean with a grill brush. For homeowners building an outdoor kitchen with a slim profile who still want a rear burner and stainless steel durability, this is the most space-efficient high-output built-in option.
Why it’s great
- 30-inch width fits tighter outdoor kitchen layouts
- 304 stainless steel grates resist rust and crack damage
- Rear burner adds rotisserie cooking capability
Good to know
- Built-in design requires permanent installation
- Rotisserie kit must be purchased separately
10. Charbroil Performance Series 4-Burner Gas Grill
Charbroil’s Performance Series delivers a 4-burner gas grill with the FlavorMax cooking system, which channels heat and smoke through a series of angled ports to produce more consistent cooking results and juicier foods. The 435 square-inch primary cooking area plus a 130 square-inch swing-away warming rack bring the total to 565 square inches — adequate for cooking up to 25 burgers in a single session. The 11,000 BTU side burner provides enough heat for sauces, sides, or boiling water while the main burners run.
The porcelain-coated cooking grates are rust-resistant and optimized for heat retention, producing even browning and distinct grill marks. The electronic ignition offers a dependable start each time, and the Gear Trax-enabled side shelf accepts tool hooks (included) for keeping utensils organized. The closed storage cabinet hides the propane tank and accessories, and the two heavy-duty 7-inch wheels plus two casters make it easy to reposition the grill around the patio.
Assembly is manageable for a single person with basic tools, and the swing-away warming rack is a convenient feature for keeping buns warm or toasting without taking up primary cooking space. The side burner is positioned on a side shelf that provides prep space, and the cabinet curtains protect the tank and tools from the elements. For first-time side burner buyers or those on a tighter budget who still want a functional auxiliary burner and a reliable ignition system from a well-known brand, this is the most practical entry-level option.
Why it’s great
- FlavorMax system delivers consistent heat and juicy results
- Porcelain-coated grates are rust-resistant and easy to clean
- Gear Trax shelf accepts tool hooks for organization
Good to know
- Side burner output at 11,000 BTU is adequate but not for high-heat searing
- Cabinet frame is painted steel rather than stainless
11. MASTER COOK 4+1 Burners Gas Grill
MASTER COOK’s 4+1 burner propane grill combines four main burners delivering 40,000 BTU with a lidded 12,000 BTU side burner, bringing the total output to 52,000 BTU. The 518 square-inch total cooking area includes a 400 square-inch primary cooking surface and a 118 square-inch porcelain-coated swing-away warming rack, making it suitable for cooking up to 25 burgers for family gatherings. The integrated piezo ignition system provides quick, reliable startups without needing batteries or a lighter.
The stainless steel lid and control panel offer a clean, modern appearance, and the lid-mounted temperature gauge gives you real-time cooking temperature at a glance. The cabinet structure is stable and includes four casters for easy portability around the patio or deck. The side burner is lidded, protecting it from the elements when not in use, and it provides enough heat to simmer sauces or boil a pot of water while the main burners handle the grilling.
Assembly is straightforward with the included instructions, and the adapter hose connects directly to a standard 20 lb propane tank. The painted steel cabinet and alloy steel frame are functional but may require more care in wet climates to prevent rust. For the budget-conscious buyer who wants a dedicated side burner and a four-burner main cooking system without spending into the mid-range tier, this model offers the most side burner capability per dollar in the entry segment.
Why it’s great
- Lidded side burner protects against weather and debris
- Piezo ignition starts reliably without batteries
- Four casters make repositioning easy
Good to know
- Painted steel cabinet may show rust in humid environments
- Warming rack at 118 sq in is smaller than many competitors
FAQ
Can I use the side burner as a primary searing station for steaks?
What size propane tank does a BBQ grill with side burner require?
Does a side burner increase the total heat output significantly compared to a standard grill?
Final Thoughts: The Verdict
For most users, the best bbq grill with side burner winner is the Monument Grills 4+2 Burner because it integrates an infrared sear burner on the side, provides 700 square inches of total cooking area, and is built with cast iron grates and stainless steel flame tamers that deliver even heat at a mid-premium price point. If you want the longevity and even heat of a cast-aluminum cookbox with a proven brand, grab the Weber Spirit E-435. And for complete rotisserie capability plus infrared side and rear burners in a flagship package, nothing beats the Napoleon Prestige 500 RSIB.










