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The BBQ Republic Promise
The Gravity Series 1150 is the large-capacity Masterbuilt Gravity Series charcoal grill and smoker. Load the GravityFed hopper, set your temperature, and the DigitalFan system holds it automatically across the full range from 107°C to 371°C. Smoke low and slow for 15 hours or sear at full heat. Free Sydney metro delivery and $100 assembly from BBQ Republic, authorised Masterbuilt dealer.
1,150
Sq in cooking space
15hrs
Max burn time
371°C
Max temperature
How It Works
Three Steps to Start Cooking
Most charcoal cookers require manual airflow management and mid-cook refuelling. The Gravity Series 1150 removes both. Load once, set your temperature, and cook without interruption.
1
Load the hopper
Fill the GravityFed hopper with lump charcoal or briquettes. The hopper holds up to 5.5 kg of lump charcoal or 8 kg of briquettes and feeds fuel down to the firebox continuously as it burns.
2
Light and set your temperature
Insert a pure paraffin fire starter for a clean, chemical-free ignition. Set your target temperature on the digital panel or the Masterbuilt app. The 1150 reaches 107°C in approximately 9 minutes and 371°C in approximately 15 minutes.
3
Cook without babysitting
The DigitalFan adjusts airflow automatically to hold your set temperature. No vent adjustment, no reloading mid-cook, no constant monitoring. Monitor up to 4 meat probes via the app from anywhere.
Cooking Capacity
Built for Large Gatherings
With 1,150 square inches of total cooking space across the main grate and two porcelain-coated warming racks, the 1150 handles serious volume without compromise.
51
Burgers
19
Whole Chickens
12
Racks of Ribs
What can I cook on the Gravity Series 1150? Everything from low-and-slow smoked brisket at 107°C through to high-heat searing at 371°C. Roast whole chickens, smoke ribs for 6 hours, bake with the lid closed, or sear steaks over direct heat. Add the Pizza Oven or Rotisserie accessory to expand further.
Cook Styles
Temperature Range
Low and slow smoking: 107°C to 150°C
Indirect roasting: 160°C to 200°C
Grilling: 200°C to 260°C
High heat searing: 300°C to 371°C
Key Features
What Makes the 1150 Work
GravityFed Charcoal Hopper
Holds up to 5.5 kg of lump charcoal or 8 kg of briquettes. As charcoal burns from the bottom, gravity feeds fresh fuel down from the hopper above. Up to 15 hours of cooking without reloading.
DigitalFan Temperature Control
A digitally controlled fan manages airflow from the hopper through to the cooking chamber. Set your temperature and the system maintains it automatically across the full 107°C to 371°C range.
Reversible Cast Iron Smoke and Sear Grates
One side optimised for high-heat searing, the other for low-and-slow where moisture retention matters. Cast iron holds and radiates heat evenly and is the preferred surface for serious charcoal cooking.
FuelSaver Dual-Wall Insulation
Dual-wall construction with porcelain-coated interior retains heat, smoke, and moisture inside the cooking chamber. Uses charcoal more efficiently and produces more consistent results across long cooks.
Masterbuilt App Control
Wi-Fi connected. Set temperature, adjust cook time, monitor up to 4 meat probes simultaneously, receive alerts, and access recipes from your phone. Manage the entire cook from inside the house.
Two Porcelain-Coated Warming Racks
Sit above the main grate for holding cooked food at temperature, running indirect cooks, or staging items during a larger cook.
Easy Cleanup
Removable ash bucket below the firebox. Front-access grease cup below the cooking chamber. Both remove and empty quickly after the cook.
Model Comparison
Gravity Series 600 vs 1150
Both models use the same GravityFed hopper system, cover the same temperature range, and include app control. The difference is cooking space and who you are cooking for.
| Specification | Gravity Series 600 | Gravity Series 1150 (this model) |
|---|---|---|
| Cooking space | 600 sq in | 1,150 sq in |
| Capacity | 5 racks ribs, 10 chickens | 12 racks ribs, 19 chickens |
| Max burn time | Up to 18 hours | Up to 15 hours |
| Reaches 107°C in | About 7 minutes | About 9 minutes |
| Temperature range | 107°C to 371°C | 107°C to 371°C |
| App control | Yes, up to 4 probes | Yes, up to 4 probes |
| Warranty | 1 year | 1 year |
| Model number | MB20041423 | MB20041625 |
| Best for | Everyday family cooks, couples to 4 people | Regular entertaining, 6 to 10 people |
The 600 is the right choice for most regular backyard cooks. The 1150 makes sense when you regularly cook for larger groups or want to run the grill at full capacity without compromise. Both are available to view at our Wetherill Park showroom.
Compatible Accessories
Expand What the 1150 Can Do
All accessories sold separately.
| Masterbuilt Pizza Oven | Converts the 1150 into a dedicated pizza oven. Reaches pizza temperatures quickly. |
| Gravity Series Rotisserie Kit | Spit-roast whole chickens, lamb legs, and rolled roasts. |
| Half-Grate Griddle Insert | Flat griddle surface for eggs, smash burgers, and vegetables. |
| Meat Probes | Up to 4 simultaneous probes supported. 1 probe included with the unit. |
| Large Digital Charcoal BBQ and Smoker Cover | Protects the unit between cooks. Recommended for outdoor storage. |
Full Specifications
Gravity Series 1150 Specifications
| Model | MB20041625 |
| Total cooking space | 1,150 sq in / 0.74 m² |
| Temperature range | 107°C to 371°C (225°F to 700°F) |
| Hopper capacity | 5.5 kg lump charcoal or 8 kg briquettes |
| Max burn time | Up to 15 hours |
| Time to 107°C | Approximately 9 minutes |
| Time to 371°C | Approximately 15 minutes |
| Width | 138 cm |
| Height | 132 cm |
| Depth | 67 cm |
| Cooking grates | Reversible cast iron Smoke and Sear grates |
| Warming racks | 2 x porcelain-coated |
| Meat probe ports | 4 (1 probe included) |
| App connectivity | Yes, Masterbuilt app via Wi-Fi |
| Fuel type | Lump charcoal or briquettes |
| Cart | Enclosed cart with lockable wheels |
| Warranty | 1 year (Masterbuilt Australia) |
Warranty
Warranty Coverage
Purchased through BBQ Republic, an authorised Masterbuilt dealer. Register your grill with Masterbuilt and keep your proof of purchase.
| Full unit warranty | 1 year from date of purchase (register with Masterbuilt) |
| Warranty support | Masterbuilt Australia. If something goes wrong, contact us and we'll help. |
| Dealer status | Authorised Australian Masterbuilt dealer |
Care and Maintenance
Keeping It in Good Condition
- Remove ash from the bucket after each cook
- Empty the front-access grease cup regularly
- Brush the cast iron grates clean after use while still warm
- Use the shutdown slides to cut airflow and save unused charcoal at the end of a cook
- Use a cover when the unit is not in use, particularly for outdoor storage
- Re-season the cast iron grates periodically with a light coat of cooking oil
- Do not use harsh chemicals on the exterior or interior surfaces
Common Questions
Masterbuilt Gravity Series FAQs
Questions we get asked most before a Gravity Series purchase. Not covered here? Call us or visit the showroom.
How does the GravityFed hopper work?
The GravityFed hopper holds your charcoal in a vertical chamber and uses gravity to feed fuel down into the firebox as it burns. A DigitalFan controls airflow to maintain your set temperature automatically. As coals burn from the bottom, new fuel drops down from above, keeping the fire going for hours without you needing to open the grill or add more charcoal.
Can I use lump charcoal or briquettes?
Both work. Lump charcoal produces a cleaner burn and more authentic smoke flavour. Briquettes burn longer and more consistently. The Gravity Series 600 holds up to 5.4kg of lump charcoal or 8.2kg of briquettes for up to 18 hours. The 1150 holds up to 5.5kg of lump charcoal or 8kg of briquettes for up to 15 hours. You do not need to use Masterbuilt branded charcoal.
What warranty comes with this unit?
Masterbuilt Australia covers the Gravity Series 600 and 1150 for 1 year from the date of purchase, and the Gravity Series XT for 3 years. Register your grill with Masterbuilt and keep your proof of purchase. Paint and rust are not covered. Buying from an authorised dealer like BBQ Republic keeps your warranty valid. If something goes wrong, contact us and we'll help you through Masterbuilt's warranty process.
Do you deliver and assemble this in Sydney?
Yes. Delivery is free across the Sydney metro area on every Masterbuilt Gravity Series smoker we sell, and we assemble it for you for $100. Regional NSW and ACT delivery is $250, plus $100 for assembly. For interstate delivery, contact us for a quote on 0434 010 411.
How do I control the temperature?
Two ways. Set your temperature directly on the digital control panel on the grill, or use the Masterbuilt app on your phone. The app lets you monitor and adjust temperature remotely, track up to 4 meat probes, view a session graph, and receive alerts. Once set, the DigitalFan holds your temperature automatically without any manual vent adjustment.
What can I cook on the Gravity Series?
Everything from low and slow smoking to high-heat searing. Smoke brisket and ribs at 107°C for hours. Sear steaks at up to 371°C. Roast whole chickens, bake, and cook indirect. The reversible cast iron grates give you a flat side for searing and a grooved side for smoking. Compatible accessories include the Masterbuilt Pizza Oven and Rotisserie Kit.
How do I shut down the grill and save unused charcoal?
You do not need to let the charcoal burn out completely. Insert the shutdown slides to cut off the air supply and choke out the fire. Any unused charcoal is saved for your next cook. It typically takes 2 to 4 hours for the remaining charcoal to fully extinguish after shutdown. Turn off the grill via the control panel once the slides are in.
Still have a question?
We cook on charcoal and can answer anything from model selection to setup to technique. Call us or visit the showroom.
Wetherill Park showroom. Open Monday and Wednesday to Friday 10am to 5pm, Saturday 9am to 2pm. Closed Tuesday and Sunday.
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