Infernus Free-Standing Gas Fryers Reviewed: 23L Single Tank vs 4-Burner Twin Tank
Last updated: November 2026
In 30 seconds:
- Infernus makes two free-standing gas fryers for high-volume frying: the 3-burner 23-litre single tank (INF-003, from £777) and the 4-burner twin tank with two separate pans (INF-120T, from £1,280).
- The single tank is the value pick. One big pan, two baskets and a listed 26.4kW output for chips in volume.
- The twin tank keeps foods apart. Each pan has its own burners and temperature control, so fish never flavours the chips. Its listed output is 35.2kW.
- Both stand on the floor. Each is 394mm wide and 1197mm tall, so measure the gap before you order.
Six o’clock on a Friday, the queue is out of the door, and the chips you dropped two minutes ago are still pale. That is the moment a counter-top fryer runs out of road.
The Infernus free-standing gas fryers are a popular first step up for UK takeaways, chip vans and event kitchens that have outgrown a counter-top unit. This review compares the 23-litre single tank and the 4-burner twin tank, with prices from £777. It shows who each one suits, what it needs and where it falls short.
Infernus free-standing gas fryers at a glance
| Spec | INF-003 single tank | INF-120T twin tank |
|---|---|---|
| Burners | 3 cast iron | 4 cast iron |
| Tanks | 1 tank, 23 litres | 2 separate tanks (see note) |
| Baskets | 2 | 2 |
| Listed output | 26.4kW | 35.2kW |
| Thermostat | 93°C to 204°C | 93°C to 204°C |
| High-limit cut-out | 232°C | 232°C |
| Width x depth x height | 394mm x 764mm x 1197mm | 394mm x 719mm x 1197mm |
| Net weight | 65kg | 71kg |
| Gas as supplied | LPG, natural gas kit included | Natural gas, LPG kit included |
| Price | from £777 | from £1,280 |
Every figure here comes from our product listings. Infernus does not publish a manual for these two fryers that we can check against, so we have only used figures the listings state clearly.
Note on the twin tank: our listing gives two different oil figures for the INF-120T, so we have left its capacity out. If oil volume matters for your menu, ask us before you order.
Infernus INF-003: the 23-litre single tank
Quick specs
- Model: INF-003, free-standing, 3 burners
- Oil: one 23-litre tank, two baskets
- Listed output: 26.4kW
- Thermostat: 93°C to 204°C
- Size: 394mm wide, 764mm deep, 1197mm tall
- Weight: 65kg net (a two-person lift)
- Price: from £777
- View the Infernus 23L single tank gas fryer
Best for
Chip-led menus. Think a takeaway starting out, a burger and chip van with a floor-standing run, or an event kitchen frying one thing in volume.
What you get
Three cast iron burners heat one deep pan. A cold zone sits below the burners and catches crumbs, so they do not burn and spoil the oil as fast.
The high-limit stat cuts in at 232°C if the oil ever overheats. A crumb rack, lid, covers and drain pipe extensions come in the box. Rear castors help you pull it out to clean behind it.
It arrives set up for LPG, with a natural gas conversion kit included. For a van or trailer, that means no conversion job on day one.
Honest trade-off
One pan means one oil. If you fry battered fish and chips in the same tank, the flavours mix and the oil darkens faster. That is when the twin tank earns its extra cost.
Infernus INF-120T: the 4-burner twin tank
Quick specs
- Model: INF-120T, free-standing, 4 burners
- Oil: two separate tanks, two baskets
- Listed output: 35.2kW
- Thermostat: 93°C to 204°C, one control per tank
- Size: 394mm wide, 719mm deep, 1197mm tall
- Weight: 71kg net (a two-person lift)
- Warranty: 12 months, parts only
- Price: from £1,280
- View the Infernus 4-burner twin tank gas fryer
Best for
Menus with fish, chicken or halloumi next to chips. It suits takeaways and busy vans that need two foods ready at the same time.
Why two tanks matter
Each tank has its own burners and its own temperature control. Chips can sit at one setting while fish cooks at another, with no flavour crossover.
When trade goes quiet, you can turn one side off and save oil and propane. If you keep a separate fry for allergen reasons, separate oil is the starting point, though your own allergen controls still apply.
Gas: read this before you order
The INF-120T is supplied for natural gas, with an LPG conversion kit in the box. A Gas Safe registered engineer must convert it and connect it before you run it on propane.
Honest trade-off
It costs £503 more than the single tank. You are paying for the second pan and the fourth burner, so it only makes sense if your menu really needs two oils.
What about the other Infernus 4-burner?
You may also see the Infernus INF-004 4-burner standing fryer, from £799. It is supplied for natural gas with an LPG conversion kit included, so it needs the same engineer conversion as the INF-120T.
Talk to us before you order it, so we can confirm the tank layout matches your menu. If you know you want two separate oils, the INF-120T is the clear choice.
Free-standing or counter-top?
If you have a strong counter and less floor space, a counter-top fryer may suit you better. The Infernus twin tank counter-top has two 12-litre tanks and costs from £1,049.
Our Infernus countertop gas fryer review covers that model and its single-tank sister in full.
A free-standing fryer wins when you fry in bigger batches, want the counter free for prep, or need to roll the fryer out to clean. If you want a British-built free-standing option, see our Lincat gas fryers compared review of the J5 and J10.
What you need before it arrives
- Floor space: 394mm of width, up to 764mm of depth and room around it to work safely. Check the height against any shelf or hatch above.
- A Gas Safe registered engineer: to connect the fryer, and to carry out the LPG conversion on the INF-120T or INF-004. The gas connection is a rear NPT thread, so let your engineer know in advance.
- Enough propane: these are high-output burners. Plan your cylinders, regulator and changeover setup with your engineer, so the gas keeps up on a cold, busy night.
- Ventilation: a busy fryer makes heat, steam and fumes. Your kitchen or vehicle needs suitable extraction and air supply.
- Two people: at 65kg and 71kg net, neither is a one-person lift.
- A routine for the oil: our guide on how to clean an LPG fryer and change the oil walks through it step by step.
The biggest mistake: buying one pan for a two-oil menu
The single tank is £503 cheaper, so it is tempting. But if your board says fish and chips, one pan forces you to fry both in the same oil.
The fish batter flavours the chips. The oil breaks down faster, so you change it more often. Over a season, the oil bill can eat into the money you saved.
The honest rule is simple. Chips only, or chips with the odd side? Buy the INF-003. Two main fried foods at the same time? Buy the INF-120T.
Which one should you buy?
- Chip van or chips-first takeaway on a budget: INF-003 single tank, from £777.
- Fish and chips, chicken and chips, or allergen-separate frying: INF-120T twin tank, from £1,280.
- Short on floor space but have a strong counter: the Infernus counter-top twin tank, from £1,049.
- Want a British-built fryer with a full manual: look at the Lincat J5 or J10.
Orders over £1,000 can be spread with lease finance, so you can buy the twin tank and pay over time. For the wider market, our best LPG fryer for mobile catering buying guide compares every fryer type we sell.
Infernus free-standing gas fryer FAQs
Is the Infernus 23L fryer single tank or twin tank?
The INF-003 is a single tank fryer. It has one 23-litre pan with two baskets, heated by three cast iron burners. If you want two separate pans, look at the INF-120T twin tank. Its two tanks have their own burners and temperature controls, so you can fry two foods in two oils at once.
How powerful are the Infernus free-standing gas fryers?
Our listings give the INF-003 single tank a 26.4kW output and the INF-120T twin tank 35.2kW. Both are high-output fryers built for volume. The twin tank shares its four burners across two pans, so each pan has its own heat. Plan your propane supply with your engineer before the fryer arrives.
Do Infernus free-standing fryers run on propane?
Yes, both can run on propane. The INF-003 arrives set up for LPG. The INF-120T arrives set for natural gas with an LPG conversion kit included, and a Gas Safe registered engineer must convert it before use. For trading in the UK, use propane, not butane, as butane struggles to vaporise in cold weather.
What temperature range do the Infernus free-standing fryers have?
Both models have a thermostat that runs from 93°C to 204°C. That covers chips, fish and chicken. Each also has a high-limit stat at 232°C, which shuts the burners down if the oil overheats. On the twin tank, each pan has its own thermostat, so two foods can cook at two settings.
How big are the Infernus free-standing gas fryers?
The INF-003 is 394mm wide, 764mm deep and 1197mm tall, and weighs 65kg net. The INF-120T is 394mm wide, 719mm deep and 1197mm tall, and weighs 71kg net. Both need two people to move them. Measure your floor space and any shelf or hatch above before you order.
Can I use an Infernus free-standing fryer in a food van or trailer?
Yes, if the vehicle has the floor space and a proper gas setup. Our listings name mobile catering units and food vans as uses. The fryer must be secured for travel, well ventilated and connected by a Gas Safe registered engineer. In a tight trailer, a counter-top fryer is often easier to fit.
What warranty comes with Infernus free-standing fryers?
The INF-120T twin tank comes with a 12 months parts only warranty. Our INF-003 listing does not state a warranty, so ask us to confirm the cover before you order. Parts only means the parts are covered, but any engineer’s labour to fit them is paid by you.
Should I choose a free-standing fryer or the Infernus counter-top twin tank?
Choose free-standing if you fry in big batches, have floor space and want the counter clear for prep. Choose the counter-top twin tank, from £1,049, if your floor space is tight and you have a strong counter. It has two 12-litre tanks and suits most vans and small kitchens.