CosmoGrill Hybrid 4 Burner DUO Review UK 2026
Quick verdict
Score: 7.2/10
Best for: Grilling on the go - camping, picnics, balconies and small patios
Not for: Cooking for a crowd - the grill area is limited
Bottom line: A practical gas barbecue (3 burners + 1 side burner, hybrid gas + charcoal) for outdoor cooking.
The CosmoGrill Hybrid 4 Burner DUO (GKZF) is a versatile dual-fuel BBQ that combines gas convenience with charcoal-style cooking in one unit. It is designed for people comparing this gas barbecue gas BBQ to charcoal grills, as it supports both methods in the same setup. The BBQ has four main cooking zones and a side burner, along with a lid thermometer and warming rack for staging food, while charcoal use typically needs more attention and can reduce practical workspace. Overall, it comes across as a flexible option for backyard cooks who want gas and charcoal methods available at the same time.
Key specifications
| Feature | What it enables |
|---|---|
| Dual fuel | Gas + charcoal cooking |
| 3+1 burners | Main heat plus extra side burner |
| Accessories | Warming rack, lid thermometer, cover |
| Fit notes | Detail |
| Outdoor use | Cover included |
| Mobility | Portable / foldable |
| Power details | Not specified |
Pros
- 3 burners + 1 side burner
- Runs on gas or charcoal
- Portable / foldable
- Warming rack, lid thermometer, cover included
- Easy to move and store
Cons
- Gas bottle, regulator and hose are usually sold separately
- Limited cooking area for larger groups
- Check the assembled size suits your space
Style and Setting
With its DUO dual-fuel setup, the CosmoGrill (GKZF) suits a garden or patio where both quick gas grilling and the deeper flavour of charcoal are part of the cooking routine. Its covered outdoor design is aimed at casual weekend use, including when wind or light rain is a factor. The lid thermometer supports heat monitoring without fully lifting the lid, which can help reduce heat loss during cooking. A warming rack supports serving flow by allowing food to rest while other items finish. Because it runs on a hybrid gas-and-charcoal approach, two fuel modes must be managed, so setup takes longer than for a single-fuel barbecue.
Size and Seating
Size and seating determine how well the gas barbecue DUO (GKZF) fits a family meal routine, because this model is built as a larger outdoor grilling unit rather than a small tabletop cooker. It is set up for shared cooking with four main heat points, plus an additional warming rack designed to keep food ready while other items finish. The overall footprint and dual fuel approach make it better suited to patios, driveways, and gatherings, where people have room to move and serve comfortably. A foldable design supports storage, but seating capacity is not directly improved, since serving a group still requires space around the grill area.
Materials and Build
The CosmoGrill DUO (GKZF) is designed for outdoor cooking using a dual-fuel setup that combines gas grilling with charcoal smoking. Its dual-system body indicates a layout intended to swap between 3 gas burners and charcoal, with a lid thermometer for temperature monitoring and a warming rack for additional cooking or holding space. The foldable, portable design suggests it prioritises easier movement and storage, and a waterproof cover is included to help protect the exterior when stored outdoors.
Comfort and Features
Comfort and features are mainly about day-to-day usability for the gas barbecue DUO (GKZF), which combines gas grilling with charcoal smoking in one unit. The layout uses three burners plus a side burner, and it includes a warming rack to hold food without crowding the main cooking area. A lid thermometer is fitted to help monitor heat during cooking. Convenience is supported by a portable or foldable design, and it includes a waterproof cover for protection between sessions, with storage space varying depending on household circumstances.
Who Is This For?
This BBQ suits people who want the convenience of everyday gas grilling, with the option to run charcoal for more "smoker-style" results, without needing a separate setup. It fits households that cook varied meals because it uses a dual-fuel approach, with 3 main burners plus a side burner. It also suits buyers with limited storage, as the unit is described as portable and foldable, and it includes a warming rack for finishing food. The lid thermometer is useful when temperature guidance matters.
Where to Buy in the UK
After weighing the hybrid gas-and-charcoal advantages and the extra effort needed to manage heat, many UK buyers next ask where they can actually purchase the CosmoGrill Hybrid 4 Burner DUO (GKZF). Availability is seasonal, so buyers typically start with major UK retailers that stock The CosmoGrill's popular BBQ lines, including Amazon UK, John Lewis, Currys, AO, Argos, Plus B&Q, Homebase, Wickes, The Range, and Wayfair. They can also check The gas barbecue's own ordering channels or online marketplaces, because foldable models with a waterproof cover may sell out quickly. When they do find the listing, they should confirm it is the DUO dual fuel 3+1 setup.
Frequently Asked Questions
Is the CosmoGrill DUO (GKZF) worth it?
For grilling on the go - camping trips, picnics and small patios, the gas barbecue DUO (GKZF) (a 3 burners + 1 side burner gas BBQ) does the job. Whether it suits you depends on how many you cook for, your space and how often you grill. Check the current Amazon UK price, as barbecues are heavily discounted outside the summer peak.
How many burners does this gas barbecue DUO (GKZF) have?
The CosmoGrill DUO (GKZF) is a 3 burners + 1 side burner model. As a rough guide, 2 burners suit couples and small families, 3 to 4 burners suit most households, and 5 or more suit regular entertaining. More burners also mean better zone control - you can run one side hot for searing and leave another cooler for indirect cooking, which is how you avoid burnt outsides and raw middles.
What fuel does the CosmoGrill Hybrid 4 Burner DUO (GKZF) use?
The gas barbecue DUO (GKZF) is a hybrid, running on both gas and charcoal. That gives you the convenience and instant control of gas midweek, plus the smoky flavour of charcoal when you have time. You'll need a gas bottle (usually patio gas or propane, sold separately) and charcoal. Hybrids cost more but suit anyone torn between the two.
Is this gas barbecue DUO (GKZF) portable?
The CosmoGrill DUO (GKZF) is a portable / foldable model, designed to be moved and stored easily - good for camping, picnics, balconies and small patios. Check the packed size and weight, and remember you'll still need a gas canister. Portable BBQs trade cooking area for convenience.
What features does the gas barbecue DUO (GKZF) have?
The CosmoGrill DUO (GKZF) offers warming rack, lid thermometer, cover included. A warming rack holds cooked food while the rest finishes. A lid thermometer lets you cook with the lid down, which is essential for anything thicker than a burger. Match the features to how you actually cook.
How do you look after the gas barbecue DUO (GKZF)?
Brush the grates while still warm after each cook, and empty the grease tray regularly - a build-up is the most common cause of flare-ups. Give the burners an occasional check for blockages. Crucially, use a cover and store it somewhere dry over winter, as rust is what kills most gas barbecues long before the burners fail. Always turn the gas off at the bottle after use.