A grill with a side burner changes how you cook outdoors. You sear steaks over the main grates while simmering barbecue sauce, boiling corn, or sautéing mushrooms on the adjacent burner. That extra cooking station eliminates the frantic dash between the patio and the kitchen stove, keeping every component of the meal hot and ready at the same time.
I’m Mohammad Maruf — the founder and writer behind AirfryerBite. I’ve spent the last fifteen years reverse-engineering outdoor cooking gear, comparing BTU charts, burner layouts, and grate materials across hundreds of grills to find the models that actually deliver even heat and real durability.
Whether you are upgrading from a basic three-burner or buying your first backyard setup, the right best grill with side burner balances total cooking output, primary grate material, and a side burner that can handle a full saucepan without simmering out mid-recipe.
How To Choose The Best Grill With Side Burner
The side burner is the defining feature here — but its usefulness depends entirely on output, placement, and how the rest of the grill is built. Focus on the specs that separate a real workstation from a decoration.
Side Burner BTU and Usability
A side burner rated at 9,000 BTU to 12,000 BTU can boil a pot of water or simmer sauce without taking forever. Anything below 8,000 BTU struggles to maintain a steady boil. Check whether the burner has a dedicated lid — a lidded side burner traps heat and speeds up cooking.
Primary Grate Material
Porcelain-enameled cast iron grates hold heat better than bare stainless steel and produce distinct sear marks. They resist rust better than uncoated cast iron but chip if dropped. Stainless steel grates heat quickly and never rust, but they lack the thermal mass needed for a hard sear.
Total Cooking Surface vs. Usable Space
Manufacturers often quote the combined primary grate area plus the warming rack. Focus on the primary cooking area in square inches — that is where the heat actually hits the food. A warming rack is useful for buns and low-heat holding but does not count as active grilling space.
Grease Management
A full-width pull-out grease tray with a removable cup makes cleanup tolerable. Without it, grease drips onto the interior cabinet and creates a stubborn mess. Look for a tray that slides out from the front without needing to lift the grates.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Monument Grills 4+2 | Premium | High-heat searing with side burner | 72,000 BTU total, infrared sear burner | Amazon |
| Weber Genesis E-325 | Premium | Long-term build and even heat | 3 PureBlu burners, porcelain grates | Amazon |
| Royal Gourmet SG6002R | Mid-Range | Large parties with sear zone | 71,000 BTU, 5 main + sear burner | Amazon |
| Captiva Designs 6-Burner | Premium | Big batch cooking with cast iron plate | 740 sq in, 6 main burners | Amazon |
| Charbroil Pro Series | Premium | Modular griddle and grill combo | Amplifire infrared, 45,000 BTU | Amazon |
| cookit 6+1 Burner | Mid-Range | Versatile griddle and sear marks | 69,000 BTU, double-wall lid | Amazon |
| Captiva Designs 4-Burner | Mid-Range | Balanced output with storage cabinet | 42,000 BTU, 4+1 burner config | Amazon |
| Sophia & William 4-Burner | Mid-Range | Style with even heat distribution | 42,000 BTU, porcelain-enameled grates | Amazon |
| Bestfire 5-Burner | Mid-Range | High BTU for the price point | 68,000 BTU, 6-burner system | Amazon |
| MASTER COOK 4+1 Burner | Budget | Entry-level with side burner included | 52,000 BTU, 12,000 BTU side burner | Amazon |
| Royal Gourmet GA5401T | Budget | Low-cost 5-burner configuration | 61,000 BTU, 5 main burners | Amazon |
In‑Depth Reviews
1. Monument Grills Larger 4+2 Burner Propane Gas Grill
The Monument Grills 4+2 delivers 72,000 BTU across four stainless steel main burners, a dedicated side burner, and an infrared sear burner. The Clearview lid window lets you check food without lifting the lid and losing heat. The primary cooking area measures 510 square inches, and the warming rack adds 190 square inches — enough for a full party spread.
Porcelain-coated cast iron grates and stainless steel flame tamers distribute heat evenly. The sear burner hits temperatures ideal for steak crusting. Built-in knob lights help you cook after sunset. The cabinet stores the propane tank cleanly behind doors, and four casters (two locking) provide stable mobility.
Assembly takes about 90 minutes with clear instructions. The side burner output is adequate for simmering sauces and boiling small batches, though it is not the fastest for large pots of water. Owners report consistent heat after years of use, even through seasonal weather exposure.
Why it’s great
- Infrared sear burner adds restaurant-level crust
- Clearview window reduces heat loss during checks
- Sturdy 304 stainless steel burners resist corrosion
Good to know
- Side burner not the most powerful for rapid boiling
- Knob lights need battery replacement occasionally
2. Weber Genesis E-325 Liquid Propane Gas Grill
The Weber Genesis E-325 uses three PureBlu burners with a tapered design that creates a consistent flame across the cooking surface. The extra-large sear zone provides intense heat for steaks and burgers. Porcelain-enameled cast iron grates retain heat for distinct sear marks, and the FLAVORIZER bars vaporize drippings to enhance flavor while funneling grease away from burners.
The grease management system pulls out from underneath the cookbox for mess-free disposal. The warming rack keeps buns and sides hot. Side tables offer prep space, and the cabinet accommodates a standard 20-pound propane tank. The Weber Crafted accessory system allows adding a griddle top or pizza stone.
Build quality is the strongest in this class. The lid and firebox feel solid, and the burner warranty demonstrates Weber’s confidence in the design. The three-burner layout is less configurable than a six-burner alternative, but the even heating and reliability justify the premium tier placement.
Why it’s great
- FLAVORIZER bars reduce flare-ups significantly
- Porcelain-enameled grates hold heat for deep sear
- Pull-out grease tray simplifies cleanup
Good to know
- Only three main burners limits zone flexibility
- Premium price reflects brand and warranty more than raw BTU
3. Royal Gourmet SG6002R 6-Burner Propane Grill
The Royal Gourmet SG6002R packs five main burners producing 10,000 BTU each, plus a 12,000 BTU sear burner and a 9,000 BTU side burner — totaling 71,000 BTU. The primary cooking area spans 521 square inches with a 193-square-inch warming rack, accommodating up to 34 burgers at once. The stainless steel lid, control panel, and cabinet doors resist rust and hold heat.
The right side shelf includes three hooks for tools, and the left shelf features a knife holder. Inside the cabinet, a storage basket on the left and a hook on the right keep grilling accessories organized. The side burner supports a full saucepan, though the 9,000 BTU output is adequate for simmering rather than rapid boiling.
Assembly requires about two hours, and some owners note that the instructions have unclear steps. The sear burner adds genuine high-heat capability for steak lovers. The warming rack is large enough for buns and sides during a full cook.
Why it’s great
- Dedicated sear burner for high-temperature searing
- Large primary area supports 30+ burgers
- Stainless steel build with tool hooks and knife holder
Good to know
- Side burner at 9,000 BTU is adequate but not powerful
- Assembly can be frustrating for some users
4. Captiva Designs 6-Burner Propane Gas BBQ Grill
Captiva Designs delivers a 6-burner grill with 740 square inches of total cooking area, including a porcelain-enameled cast iron grate and a matching flat plate. The plate expands cooking options — you can sear vegetables, cook eggs, or make pancakes alongside grilled meats. The enameled fire chamber resists high heat without warping and wipes clean easily.
The full-size slide-out grease tray tilts to direct drippings into a hanging grease box, making post-cook cleanup fast. The cabinet features locking casters and storage space for a propane tank and tools. Built-in thermometer monitors internal temperature without lifting the lid.
The 52,000 BTU output across six burners is modest for the number of burners, but the total cooking area is generous. The side burner works well for simmering and low-heat tasks. The enameled fire chamber is a standout feature for durability – it stays rust-free longer than painted steel.
Why it’s great
- Included cast iron plate adds griddle versatility
- Enameled fire chamber resists rust and discoloration
- Tilted grease tray with hanging box simplifies cleaning
Good to know
- Total BTU per burner is moderate at 52,000 BTU
- Warming rack not included in primary area calculation
5. Charbroil Pro Series with Amplifire Infrared Technology
The Charbroil Pro Series uses Amplifire infrared technology to distribute heat evenly across a 535-square-inch primary cooking area. The system includes a modular griddle top that converts the grill to griddle cooking in under 90 seconds. A 155-square-inch warming rack sits above the main grates for indirect heat or keeping food warm.
The side shelf is oversized — large enough to hold plates, sauce bottles, and tools. The gas grill heats to 500°F in under ten minutes. Porcelain-coated cast iron grates resist rust and produce clean grill marks. The optional Gas2Coal charcoal tray converts it to charcoal cooking, adding flexibility.
At 45,000 BTU, the output is lower than many competitors, but the infrared design means heat is delivered more efficiently. The side burner is useful but not the star — the modular griddle and optional charcoal conversion are the real differentiators. The 10-year burner warranty adds long-term value.
Why it’s great
- Griddle top switches in under 90 seconds
- Amplifire infrared eliminates hot and cold zones
- 10-year burner warranty provides peace of mind
Good to know
- Total BTU is lower than comparably sized grills
- Charcoal tray sold separately
6. cookit 6+1 Burner Propane Gas Grill
The cookit grill features four 10,000 BTU main burners plus a 9,000 BTU side burner, totaling 69,000 BTU. The double-wall stainless steel lid traps heat like a smoker, enabling both low-and-slow cooking and high-heat searing. Included cast iron grate and griddle plate offer two cooking surfaces in one package.
Porcelain flame tamers prevent hot spots by distributing heat evenly across the cooking surface. The full-extension grease tray slides out smoothly, and the detachable cup makes disposal single-handed. Folding side tables expand into buffet stations, and the built-in bottle opener is a practical touch.
The side burner output at 9,000 BTU is sufficient for simmering and light boiling. The grill configuration favors versatility — the griddle plate lets you do breakfast outdoors. Assembly requires careful reading of the manual, but the result is a stable, well-built unit.
Why it’s great
- Double-wall lid retains heat for smoking-style cooking
- Includes both cast iron grate and griddle plate
- Full-extension grease tray with detachable cup
Good to know
- Side burner not designed for heavy-duty boiling
- Assembly instructions require careful attention
7. Captiva Designs 4-Burner Propane Gas BBQ Grill
Captiva Designs offers a 4-burner propane grill with porcelain-enameled cast iron grates that combine the heat retention of cast iron without the rust issues. The 400-square-inch primary cooking area plus a 145-square-inch warming rack totals 545 square inches. Four stainless steel burners produce a combined 42,000 BTU with enameled flame tamers for even heat distribution.
The full-size pull-out oil drip tray collects grease effectively and slides out for quick cleaning. The large storage cabinet accommodates a propane tank and accessories, keeping the workspace tidy. The side burner adds an extra cooking station for sides and sauces.
The 42,000 BTU output is moderate, but the cast iron grates retain heat so effectively that searing performance feels stronger than the number suggests. The grill is best for medium-sized gatherings where consistent heat and easy cleanup are priorities.
Why it’s great
- Porcelain-enameled cast iron grates prevent rust
- Pull-out drip tray simplifies post-cook cleanup
- Spacious storage cabinet for tank and tools
Good to know
- 42,000 BTU output is lower than some competitors
- Warming rack area is modest
8. Sophia & William 4-Burner Gas BBQ Grill
The Sophia & William 4-burner grill stands out with a blue cabinet finish that adds visual interest to patio setups. The 397-square-inch primary cooking area uses porcelain-enameled cast iron grates, paired with a 145-square-inch warming rack for a total of 542 square inches. Four stainless steel burners deliver 32,000 BTU, and the side burner adds 10,000 BTU.
The double-layer lid improves heat retention, and the built-in thermometer provides real-time temperature monitoring. Galvanized casters make the unit easy to move. The electronic ignition starts reliably with a push and turn of the control knob.
The design detail — stainless steel trim and a colored cabinet — makes this grill feel more expensive than its price tier. The side burner output at 10,000 BTU is decent for boiling and simmering. The grill works well for medium-sized families and those who care about aesthetics alongside function.
Why it’s great
- Durable porcelain-enameled grates
- Color options add style to outdoor kitchens
- Double-layer lid improves heat retention
Good to know
- 42,000 BTU total is lower than many 4-burner grills
- Galvanized casters are functional but not heavy-duty
9. Bestfire 68,000 BTU 5 Burner Propane Gas Grill
Bestfire delivers 68,000 BTU through five main burners and one side burner. The 447-square-inch primary cooking area uses porcelain-enameled grates, with a 200-square-inch warming rack on top. Cast iron grates retain heat for searing, and the 304 stainless steel body resists corrosion. The push-button ignition fires up instantly.
The storage cabinet accommodates a 20-pound propane tank and grilling tools. Four heavy-duty wheels — two with locks — allow easy movement across patios. The side burner is useful for sauces and sides, though the grill shines most when cooking burgers and steaks directly on the main grates.
Assembly takes about two hours, and some users recommend watching the video tutorial before starting. The high BTU output means this grill heats up fast, even in cooler weather. The warming rack is large enough for multiple trays of buns or vegetables.
Why it’s great
- 68,000 BTU provides fast heat-up and high searing temp
- 304 stainless steel body resists rust
- Large warming rack for buns and sides
Good to know
- Assembly instructions need improvement
- Some units show discoloration after high-heat cooking
10. MASTER COOK 4+1 Burners Gas Grill
The MASTER COOK 4+1 burner grill provides 40,000 BTU across four main burners plus a 12,000 BTU lidded side burner. The 400-square-inch primary cooking area and 118-square-inch warming rack total 518 square inches. The piezo ignition system delivers reliable startups, and the stainless steel lid and control panel look clean on any patio.
The cabinet design hides the propane tank behind doors, improving appearance. Four casters allow repositioning. The side burner is one of the strongest in its price class at 12,000 BTU — enough to boil a pot of water quickly. The warming rack is swing-away for flexible access.
Assembly can be challenging, and the packaging is not the most protective during shipping. Painted finish on the cabinet is less durable than stainless steel. For the price, the 12,000 BTU side burner is a standout feature that makes this grill suitable for those who prioritize side burner power over total main burner count.
Why it’s great
- 12,000 BTU side burner is strong for boiling
- Compact footprint fits smaller patios
- Piezo ignition works reliably over time
Good to know
- Painted finish is less durable than stainless steel
- Assembly instructions could be clearer
11. Royal Gourmet GA5401T 5-Burner BBQ Liquid Propane Gas Grill
The Royal Gourmet GA5401T offers five main burners producing 61,000 BTU total. The stainless steel construction covers the lid, control panel, and cabinet doors. The primary cooking area and warming rack together provide ample space for medium-sized gatherings. The side burner adds an extra cooking station for sauces or sides.
The cabinet includes storage for a propane tank and tools. Four casters allow mobility. The side burner output is standard for its class but not exceptional. The focus here is on providing five burners at a budget-friendly price point, making it a cost-effective entry into grill-with-side-burner ownership.
Assembly time is comparable to other grills in this tier. The stainless steel finish is durable but thinner than premium models. For buyers who need a high main burner count without a large investment, the GA5401T delivers the basics effectively.
Why it’s great
- Five main burners for under a moderate price threshold
- Stainless steel construction for rust resistance
- Large storage cabinet for propane tank and accessories
Good to know
- Side burner output is standard, not powerful
- Stainless steel gauge is thinner than premium models
FAQ
Can the side burner replace a kitchen stovetop?
What is the minimum BTU I need for the side burner to be useful?
Does the side burner require a separate gas connection?
How long does it take to assemble a grill with a side burner?
Are porcelain-enameled grates worth the extra cost over bare stainless steel?
Final Thoughts: The Verdict
For most users, the best grill with side burner winner is the Monument Grills 4+2 Burner because it balances a high 72,000 BTU output, a dedicated infrared sear burner, the Clearview lid window, and a side burner that handles standard sauce and side tasks — all in a solid stainless steel build. If you want the best long-term reliability and even heat distribution, grab the Weber Genesis E-325. And for a budget-friendly entry point with a 12,000 BTU side burner, nothing beats the MASTER COOK 4+1 Burner.