You want the deep, smoky bite of charcoal on a brisket but also need the convenience of gas for a quick weeknight burger. That conflict usually means owning two separate grills, eating up patio space and your budget. A combo charcoal gas grill solves this by merging both fuel systems into a single cooking station, letting you choose your heat source based on the meal—not your available storage.
I’m Mo Maruf — the founder and writer behind The Tools Trunk. This guide is the result of 40+ hours cross-referencing BTU ratings, cooking surface dimensions, material thickness, damper designs, and real-world customer reports across nine dual-fuel models to separate the true performers from the flimsy hybrids.
Whether you’re searing steaks on gas or smoking pork shoulders over lump charcoal, the right combo charcoal gas grill delivers authentic charcoal flavor without sacrificing the speed of propane.
How To Choose The Best Combo Charcoal Gas Grill
Dual-fuel grills force you to evaluate both cooking systems simultaneously. A high-performing gas side with a flimsy charcoal chamber creates a half-baked tool. Focus on the interplay between material quality, heat management, and total usable surface area to avoid a compromise that fails at both jobs.
Total Cooking Surface and Zone Layout
Look beyond the headline square-inch number. A large warming rack inflates the spec without adding searing space. Pay attention to the primary cooking area on each side and whether the gas and charcoal sections operate independently. A combined 600–800 sq. in. of primary cooking is enough for most backyard gatherings. If the gas and charcoal sides share a single chamber, you lose the ability to run both fuel types at different temperatures.
Adjustable Charcoal Pan and Airflow Control
Charcoal cooking demands precise oxygen management. The best combo grills include a height-adjustable charcoal pan that lets you move the coals closer for searing or farther for low-and-slow smoking. Look for dual dampers (intake and exhaust) on both the main chamber and any attached smoker box. Without adjustable vents, you cannot stabilize temperature, which defeats the purpose of using charcoal for flavor.
Burner Material and BTU Density
Stainless-steel tube burners resist corrosion longer than painted steel. Total BTU output matters less than BTU per square inch of primary cooking area. A 30,000 BTU grill with a large chamber may heat slower than a 24,000 BTU grill with a compact, well-insulated firebox. Aim for roughly 45–60 BTU per square inch of primary gas cooking area for consistent heat recovery when grilling.
Material Grade and Rust Resistance
Combo grills often sit outdoors year-round. Porcelain-enameled cast iron grates outperform bare cast iron or chrome-plated steel in non-stick durability and rust resistance. The body should use heavy-gauge steel (1.5 mm or thicker) with a high-temperature powder coat or enamel finish. Painted alloy steel chips easily, exposing bare metal to moisture. Check whether the ash pan and grease tray are slide-out designs for simple cleanup after every cook.
Quick Comparison
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| Model | Category | Best For | Key Spec | Amazon |
|---|---|---|---|---|
| Char-Griller Flex Fuel Plus | Premium | Versatility (gas, charcoal, griddle, smoker) | 1,260 sq. in. total cooking area | Amazon |
| Oklahoma Joe’s Canyon Combo | Premium | Offset smoking and propane grilling | 36,000 BTU on 3 burner propane side | Amazon |
| Captiva Designs Dual Fuel | Mid-Range | Balanced gas/charcoal with side burner | Porcelain-enameled cast iron grates | Amazon |
| GRILL DEPOTS 2-in-1 | Mid-Range | Griddle plus dual fuel zones | 41,500 BTU total output | Amazon |
| Grills House ZH3005Y-SC | Mid-Range | Gas, charcoal, and offset smoker combo | 1,020 sq. in. cooking area with smoker | Amazon |
| Grills House ZH3005-SC | Mid-Range | Compact dual fuel with side burner | 823 sq. in. total cooking surface | Amazon |
| SKOK 3-in-1 Combo | Budget-Friendly | Camping and small patio use | 45,000 BTU from 4 burners | Amazon |
| BESTFIRE Oversized Charcoal | Budget-Friendly | Large capacity charcoal smoking | Dual independent lifting coal trays | Amazon |
In‑Depth Reviews
1. Char-Griller Flex Fuel Plus 3 in 1
The Char-Griller Flex Fuel Plus combines a gas grill, charcoal grill, smoker, and flat-top griddle into a single station. The gas side delivers 30,000 BTU across three stainless steel burners with push-button ignition, while the charcoal chamber includes an adjustable tray and dual dampers for smoke control. The pre-seasoned griddle insert drops into the gas side, turning the entire unit into a breakfast station or teppanyaki cooktop without needing separate hardware.
Total cooking area hits 1,260 square inches, making this one of the most spacious combos in its class. The charcoal section can run low-and-slow alongside a gas-side sear zone, giving you two distinct temperature zones simultaneously. Assembly requires an impact driver due to the number of fasteners, and some units shipped with thin-gauge steel that showed rust before first use, according to several buyers.
For the backyard cook who wants to smoke brisket on charcoal while grilling chicken on gas and griddling bacon at the same time, the Flex Fuel Plus delivers unmatched versatility. The rust issues on certain batches are a concern, but proper seasoning and a cover mitigate premature corrosion.
What works
- Four cooking modes from one footprint
- Push-button automatic ignition on gas side
- 1,260 sq. in. total cooking area handles crowds
What doesn’t
- Some units arrived with thin steel and pre-existing rust spots
- Assembly is labor-intensive with many small parts
- Griddle insert is separate from charcoal chamber
2. Oklahoma Joe’s Canyon Combo
The Canyon Combo from Oklahoma Joe’s pairs a charcoal offset smoker with a 36,000 BTU three-burner propane grill. The smoker side offers a 750 sq. in. primary grate plus a 281 sq. in. firebox grate, allowing you to run two indirect heat zones or grill directly over the firebox coals. The gas side uses porcelain-enameled cast iron grates that resist rust and retain heat for consistent grill marks.
Dual dampers on the charcoal firebox and smokestack give pitmaster-level control over airflow, and the removable ash pan simplifies cleanup after long smokes. The gas burner heats up quickly and maintains even temperatures across the grates. Some owners report the casters are undersized for a unit this heavy, and the firebox requires frequent tending—every 25 minutes—to maintain stable temperatures in cooler weather.
This is the best choice for anyone who wants a serious offset smoker experience paired with a full-size gas grill. The footprint is large at 68.9 inches wide, so measure your patio before buying.
What works
- True offset smoker with damper control for authentic BBQ
- Porcelain-coated cast iron grates resist rust and hold heat
- Removable firebox ash pan for easy cleanup
What doesn’t
- Firebox requires frequent charcoal and airflow attention
- Four locking casters would improve stability over two
- Large footprint needs dedicated patio space
3. Captiva Designs Dual Fuel Propane/Gas & Charcoal
Captiva Designs offers a side-by-side gas and charcoal layout with porcelain-enameled cast iron grates across the 520 sq. in. primary cooking area plus a 170 sq. in. stainless steel warming rack. The three stainless steel burners on the gas side have reliable piezo ignition, and the charcoal tray is enameled for easier ash removal. A tilt in the grease tray channels oil directly into the hanging drip cup, reducing mess after fatty cooks.
The charcoal side uses a simple two-position pan for heat adjustment, and the included side burner handles sauces or sides. Assembly takes about 1.5 hours with two people; the gas hose runs longer than needed, which some owners coiled behind the cabinet. A few reports note the side shelves warp under direct heat and the front air vents are cosmetic rather than functional.
For the mid-range budget, the Captiva delivers solid material quality in the cooking grates and a clean grease management system. The cosmetic vents and shelf heat concerns are minor compared to the overall value of having two independently controlled fuel systems.
What works
- Porcelain-enameled cast iron grates resist rust and clean easily
- Slide-out grease tray and ash pan simplify cleanup
- Side burner adds cooking flexibility for sauces or sides
What doesn’t
- Front air vents are decorative, not functional
- Side shelves can warp when exposed to high heat
- Gas side is small—fits about two steaks at once
4. GRILL DEPOTS 2-in-1 Gas & Charcoal with Griddle
The GRILL DEPOTS combo uses a side-by-side design with a charcoal section and a four-burner gas side that produces 41,500 BTU total. Three of the gas burners deliver 10,000 BTU each, while a dedicated 9,000 BTU side burner handles extra cooking. The cast iron grates include a perforated griddle pan that allows heat and smoke to pass through for even cooking on meats and vegetables.
Doubled steel lids prevent warping over time, and the pull-out drip tray collects grease efficiently. The 673 sq. in. total cooking area includes a 162 sq. in. warming rack. Owners mention assembly is straightforward with clear instructions, and the adjustable charcoal pan has three levels for distance control. A few buyers noted the metal is not heavy-gauge throughout, and the gas-only cooking area feels limited when cooking for more than four people.
This grill works well for someone who wants a griddle insert without buying separate accessories and values the higher BTU output for quick gas searing. The perforated pan is a unique feature that bridges the gap between a flat top and traditional grates.
What works
- Perforated griddle pan allows smoke flow while griddling
- Double-layer stainless steel lid resists warping
- 41,500 BTU total provides fast heat-up
What doesn’t
- Gas primary cooking area is limited for large groups
- Metal gauge is thinner than premium competitors
- Some units have cosmetic shipping damage
5. Grills House ZH3005Y-SC Gas & Charcoal with Smoker
The ZH3005Y-SC from Grills House adds a dedicated offset smoker to the standard gas-and-charcoal combo. Total cooking area reaches 1,020 sq. in., split between 333 sq. in. for gas, 333 sq. in. for charcoal, a 157 sq. in. warming rack, and a 197 sq. in. smoker chamber. The offset smoker has its own side door for adding charcoal without opening the main chamber.
The 34,000 BTU output comes from two 12,000 BTU main burners and a 10,000 BTU side burner. A three-level adjustable charcoal pan gives you sear, medium, and smoke positions, and the maximum charcoal capacity is 3.3 lbs. for the main chamber plus 1.5 lbs. for the smoker. Assembly instructions are picture-only and use mismatched labeling, which some owners found frustrating.
This unit works best for cooks who want separate smoking capability without buying a standalone offset smoker. The price-to-feature ratio is strong, but prepare for a challenging assembly process.
What works
- Dedicated offset smoker adds true low-and-slow capacity
- Three-level adjustable charcoal pan for heat control
- 1,020 sq. in. total handles up to 36 burgers
What doesn’t
- Assembly instructions are confusing with mismatched labeling
- Vent control is imprecise; grill runs very hot regardless
- Some small parts arrive unlabeled
6. Grills House ZH3005-SC Gas & Charcoal with Side Burner
The ZH3005-SC is a slightly smaller sibling of the model above, omitting the offset smoker but retaining the gas, charcoal, and side burner layout. Total cooking area is 823 sq. in., with 333 sq. in. each for gas and charcoal, plus a 157 sq. in. warming rack. The two 12,000 BTU main burners and 10,000 BTU side burner deliver 34,000 BTU total.
A height-adjustable charcoal pan and side air vent help control temperatures on the charcoal side. Dual lid-mounted thermometers on each chamber show real-time temps. Assembly is again picture-only, and some owners struggled with unlabeled parts and screws that strip easily. Once assembled, the grill gets plenty hot and holds temperature well.
This is a good pick for smaller patios or for someone who wants the gas-charcoal flexibility without taking up the extra width of an offset smoker. The side burner is a practical bonus for simmering sauces while grilling.
What works
- Compact footprint fits smaller outdoor spaces
- Side burner adds cooktop space for sauces or sides
- Piezo ignition works without batteries
What doesn’t
- Assembly instructions are picture-only and confusing
- Black coating can wear off during hardware tightening
- Side burner requires three people to align during assembly
7. Weber Genesis E-325 Liquid Propane Gas Grill
The Weber Genesis E-325 is a pure propane grill, not a dual-fuel combo. It earns a spot here because many combo buyers pair it with a separate charcoal kettle for smoking. The 641 sq. in. cooking surface sits above three PureBlu burners with a tapered design that produces consistent flame across the grates. The extra-large sear zone concentrates heat for crust development on steaks.
Porcelain-enameled cast iron grates and Flavorizer bars catch drippings to create smoke vapor without flare-ups. The grease management system uses a pull-out tray that slides out for quick disposal. Assembly through the BILT app takes about 1.5 hours, and owners consistently praise the build quality and even heat distribution. The Genesis lacks charcoal capability entirely, so it works best as a high-end gas companion to a charcoal smoker.
If your primary cooking method is propane but you want occasional charcoal flavor from a separate kettle grill, the Genesis E-325 delivers premium gas performance with Weber’s reliable long-term durability.
What works
- PureBlu burners provide even, consistent heat across the grate
- Extra-large sear zone for high-heat crust on steaks
- Porcelain-enameled cast iron grates resist rust and clean easily
What doesn’t
- No charcoal capability—requires separate grill for wood flavor
- Premium price tier far above entry-level combos
- Grease tray is small and fills quickly on long cooks
8. SKOK 4 Burner 3-in-1 Charcoal/Gas/Griddle Combo
The SKOK 3-in-1 uses four independently controlled stainless steel tube burners producing 45,000 BTU total across a 331 sq. in. cooking area. The 184.5 sq. in. griddle section and 146.5 sq. in. grilling grate are both cast iron. A free charcoal box and enameled cooking grate are included for when you want to switch to charcoal mode. The dual-lid design helps each side retain its own heat.
The unit is compact at 32.7 inches wide and sits low to the ground at 17.5 inches high, making it ideal for camping or smaller balconies. The oil and ash drip tray channels grease into a cup while collecting ash for disposal. Buyers consistently mention easy assembly and even heating for the price. The griddle surface is smaller than standalone flat-tops, so feeding more than four people requires multiple batches.
This entry-level combo offers an excellent introduction to dual-fuel cooking without a large investment. The compact size and cast iron components make it a practical choice for tailgating or small patios where space is limited.
What works
- Four burners and 45,000 BTU heat up quickly
- Compact size fits balconies and camp sites
- Includes griddle, charcoal box, and enameled grate
What doesn’t
- Total cooking area is only 331 sq. in., small for crowds
- Low profile may require bending for taller cooks
- Charcoal mode adds complexity for first-time users
9. BESTFIRE Oversized Charcoal BBQ Grill & Smoker
The BESTFIRE is a pure charcoal grill with no gas burner, but its dual independent lifting coal trays set it apart for charcoal-only combo enthusiasts. Two manual crank handles let you raise or lower each tray independently, enabling a “Sear & Smoke” technique on a single grill. The 63-inch cabinet includes foldable side tables, a double-door storage cabinet, and four locking casters for mobility.
The high-heat enamel-coated grates provide a non-stick surface and even heat distribution for the sizable main cooking grate and elevated warming rack. Owners report feeding 15+ people with ease. However, multiple buyers reported bent metal panels, poor welding alignment, and nearly impossible assembly instructions. The painted steel is thin on some pieces, and the supplied hardware strips easily.
This grill appeals to charcoal purists who want adjustable heat zones and cabinet storage on a tight budget. Acceptance comes with the understanding that build quality and assembly experience may fall short of expectations.
What works
- Dual crank-lifting trays enable precise heat control
- Large capacity feeds 15+ people per cook
- Cabinet storage keeps tools and charcoal protected
What doesn’t
- Multiple reports of bent metal and poor welding
- Assembly instructions are difficult to follow
- No gas option—strictly charcoal only
Hardware & Specs Guide
BTU Density and Burner Configuration
BTU alone doesn’t predict performance. Divide the total BTU output by the primary gas cooking area (not including warming racks or charcoal chambers) to get BTU per square inch. A ratio of 45–60 BTU/sq. in. indicates good heat recovery on the gas side. Stainless steel tube burners last longer than painted steel. Three burners provide better zone control than two, allowing you to create a cool zone for indirect grilling.
Charcoal Pan Adjustment and Air Dampers
The distance between charcoal and food determines whether you sear or smoke. Adjustable pans with 2–3 height levels give you that control. Intake dampers (bottom of the chamber) and exhaust dampers (top or smokestack) must be independently adjustable for temperature regulation. Without both, your charcoal side runs either too hot or starved of oxygen. Look for enameled charcoal trays that resist rust from ash moisture.
FAQ
Can I use both gas and charcoal sides at the same time in a combo grill?
Why does my charcoal gas combo grill not hold low smoking temperatures?
How do I prevent rust on the grates of my combo charcoal gas grill?
Final Thoughts: The Verdict
For most users, the best combo charcoal gas grill winner is the Char-Griller Flex Fuel Plus because it combines four cooking modes—gas, charcoal, smoker, and flat-top griddle—in one durable package with the highest total cooking area. If you want dedicated offset smoking capability alongside propane grilling, grab the Oklahoma Joe’s Canyon Combo. And for entry-level dual fuel on a tight budget, nothing beats the compact SKOK 3-in-1 for portability and value.