If your menu has anything fried on it - chips, chicken, tempura, doughnuts, battered fish - your fryer is going to be one of the hardest-working pieces of equipment in your kitchen. It's also one of the most straightforward purchases to get wrong.
Buy a fryer that's too small and you'll be waiting for oil to recover between batches during the Friday rush. Buy one that's too big and you're heating oil you don't need, wasting energy and money. Choose gas when you should have gone electric (or the other way around) and you're stuck with higher running costs or an installation headache.
This commercial fryer buying guide breaks down the decisions that actually matter: gas vs electric, countertop vs freestanding, how to size it properly, and what to look for beyond the price tag. We sell fryers to everything from small cafes to busy fish and chip shops, so we've seen what works and what doesn't. We've kept it focused on UK kitchens, with realistic costs and the safety requirements you need to know about.
Gas vs Electric: The Big Decision
This is the first thing to work out, and it depends on your kitchen's infrastructure, your volume, and your budget.
Gas Fryers
Gas fryers heat the oil by passing flames around tubes or a heat exchanger submerged in the oil tank. They've been the traditional choice in high-volume commercial kitchens for decades, and there are good reasons for that.
Where gas wins:
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Recovery time. Gas fryers bounce back faster after you drop a batch of cold food into hot oil. That matters during busy services when you're frying continuously. Faster recovery means more consistent output.
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Running costs. Natural gas is cheaper per unit of energy than electricity in the UK. For a fryer that's running for hours each day, the savings are noticeable over a year.
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Raw power. Gas fryers tend to offer higher BTU output, which means they reach frying temperature faster from cold.
Where gas falls short:
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Installation. You need a gas supply, and the fryer must be installed by a Gas Safe registered engineer. You'll also need an annual CP42 gas safety certificate. If your kitchen doesn't already have gas, the installation cost may tip the equation.
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Temperature control. Gas fryers are slightly less precise than electric when it comes to holding a specific temperature. The difference is small, but it exists.
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Heat output into the kitchen. Gas fryers produce more ambient heat than electric models, which can make an already warm kitchen noticeably hotter during service.
Cost range: Countertop gas fryers start around £300-£500. Freestanding single-tank gas models run £500-£1,200. Twin-tank freestanding gas fryers cost £800-£1,800.
Electric Fryers
Electric fryers use heating elements immersed directly in the oil. Because the element is in direct contact with the oil rather than heating it through a tube, they're inherently more energy efficient at converting power into heat.
Where electric wins:
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Temperature precision. The direct-contact element gives tighter temperature control. This matters for items that need exact frying temperatures - tempura, delicate fish, doughnuts.
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Installation simplicity. Plug in and go (for smaller models). No gas line, no Gas Safe engineer, no annual CP42 certificate. Larger units may need a dedicated electrical circuit, but that's still simpler than running a gas supply.
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Energy efficiency. Electric fryers convert more of their energy into heat in the oil. Less waste heat means a cooler kitchen too.
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Compact footprint. Electric countertop fryers are among the most space-efficient commercial cooking appliances you can buy.
Where electric falls short:
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Running costs. Electricity costs more per kWh than gas in the UK. Even though electric fryers are more efficient, the unit price of electricity can make them more expensive to run in heavy-use scenarios.
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Recovery time. Standard electric fryers are typically a touch slower to recover than gas, though high-efficiency electric models are closing this gap.
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Power requirements. Larger electric fryers may need a dedicated circuit or even three-phase power. Check your electrical supply before ordering.
Cost range: Countertop electric fryers start around £150-£400. Freestanding single-tank electric models run £400-£1,000. Twin-tank freestanding electric fryers cost £600-£1,500.
So Which Should You Choose?
Go gas if: you're frying in high volume, you already have a gas supply, and running costs are a priority. Fish and chip shops, fried chicken operations, and busy pub kitchens typically favour gas.
Go electric if: you need precise temperature control, you don't have gas, space is tight, or your frying volume is moderate. Cafes, smaller restaurants, food trucks, and operations where frying is a secondary rather than primary cooking method do well with electric.
Countertop vs Freestanding
Right. Gas vs electric sorted? Good. The next question is simpler - it's mostly about volume and space.
Countertop Fryers
Sit on your worktop or a dedicated stand. Smaller oil capacity (typically 4-12 litres). Lighter and more portable.
Best for: cafes, small takeaways, food trucks, pubs with a limited fried menu, or as a secondary fryer alongside a larger unit. If you're frying 20-30 portions an hour or less, a countertop unit handles it comfortably.
Cost range: £150-£600 depending on capacity and fuel type.
Freestanding Fryers
Floor-standing units with larger tanks (15-25+ litres). Built for heavy, continuous use. Often have features like built-in oil filtration, larger basket capacity, and better temperature recovery.
Best for: fish and chip shops, fried chicken restaurants, busy pubs, hotel kitchens, and any operation where frying is a core part of the menu. If you're regularly frying during service for 50+ covers, you need a freestanding unit.
Cost range: £400-£1,800 depending on capacity, tanks, and fuel type.
Single Tank vs Twin Tank
Many freestanding fryers come in twin-tank configurations - essentially two fryers side by side sharing one unit. This lets you:
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Fry different items at different temperatures simultaneously (chips at 175°C, fish at 180°C)
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Keep one tank for fish/seafood and the other for everything else, avoiding flavour transfer
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Run one tank during quieter periods and both during peak service
Twin-tank models cost more (roughly 50-70% more than single-tank equivalents), but for busy operations they're worth it. Being able to separate allergen-risk items (like fish) from other fried food is a practical food safety advantage too.
How to Size Your Fryer
Getting the size right avoids two expensive problems: bottlenecks during service (too small) and wasted energy (too big).
Oil Capacity
Commercial fryers are measured by oil capacity in litres:
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4-8 litres - small countertop units. Suitable for light frying duties.
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8-12 litres - larger countertop or compact freestanding. Good for moderate volume.
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15-20 litres - standard freestanding. Handles steady service for medium restaurants.
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20-25+ litres - high-capacity freestanding. Built for continuous, heavy frying.
Matching to Your Volume
Think about your peak hour. How many fried portions do you need to produce in your busiest 60 minutes? A standard freestanding fryer with a 15-20 litre capacity can produce roughly 25-40kg of fried food per hour, depending on the product. If you need more than that, you're looking at twin-tank units or multiple fryers.
Don't size your fryer for your average day. Size it for your busiest day. The fryer that handles a quiet Wednesday easily but can't keep up on Saturday night is the wrong fryer.
Oil Management: The Hidden Running Cost
Here's what catches a lot of operators out - and it's something we hear about regularly from customers after they've been running for a few months. The purchase price and energy costs of your fryer are just part of the story. Oil is an ongoing expense, and how you manage it has a direct impact on food quality, costs, and safety.
How Often to Change Oil
Oil doesn't have a fixed lifespan - it depends on what you're frying, at what temperature, and how often. As a general guide:
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Heavy use (fish and chip shops, fried chicken) - filter daily, change every 2-4 days
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Moderate use (restaurant with some fried items) - filter every other day, change weekly
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Light use (cafe with occasional frying) - filter twice weekly, change every 1-2 weeks
Signs your oil needs changing: dark colour, persistent foam, off smell, food coming out greasy or with an off taste.
Oil Filtration
Built-in oil filtration systems are available on some freestanding fryers. They extend oil life significantly - some operators report getting 50% more use from their oil with regular filtration. That's a real cost saving when you're going through 20+ litres of oil every few days.
If your fryer doesn't have built-in filtration, portable filtration units are available (£200-£600). Worth the investment for any operation doing regular frying.
Waste Oil Disposal
Used cooking oil must be collected by a licensed waste carrier in the UK. You cannot pour it down the drain - it's illegal and causes serious drainage problems. Most waste oil collectors provide free collection because they recycle the oil into biodiesel. Set up a collection schedule before you start frying.
Safety Requirements
Fryers are one of the higher-risk pieces of equipment in a commercial kitchen. Hot oil is dangerous, and the Health and Safety at Work Act 1974 places clear duties on employers.
Essential Safety Measures
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Thermostat and high-temperature cut-off - every commercial fryer should have a thermostat to maintain cooking temperature and an independent high-temperature safety cut-off that kills the heat if the oil gets too hot. Never operate a fryer without a functioning thermostat.
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Oil temperature - normal operating range is 170-180°C. Oil should never exceed 200°C. Above that temperature, the oil begins to break down and eventually reaches flash point (around 315°C for most cooking oils), creating a serious fire risk.
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Fire safety - a wet chemical fire extinguisher (not water, not CO2) must be accessible near any fryer. A fire blanket should also be within reach. Never throw water on an oil fire.
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Staff training - anyone operating a fryer needs to understand safe operation, what to do if oil overheats, and how to respond to an oil fire. This should be part of your induction training.
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PPE - heat-resistant gloves and aprons should be available for staff working with fryers, particularly when filtering or changing oil.
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Non-slip flooring - oil splashes make floors slippery. Non-slip mats or appropriate flooring near the fryer station reduce the risk of slips and falls.
Risk Assessment
Under UK health and safety law, you need a documented risk assessment for your frying operations. This covers the hazards (burns, fire, slips), who's at risk, and what controls you've put in place. Your local Environmental Health team will expect to see this.
What to Look for Beyond Price
When you're comparing commercial fryer models, here are the features that make a real difference day to day:
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Recovery time - how quickly does the oil return to frying temperature after food is added? Faster recovery means more consistent results during busy periods.
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Thermostat accuracy - cheaper fryers can be 10-15°C off their displayed temperature. Better units hold temperature more accurately, which affects food quality.
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Basket size and design - does the basket hold enough for your typical batch? Can you lift it easily and hook it for draining?
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Drain tap - a tap at the bottom of the tank makes oil changes far easier and safer than trying to lift and pour a tank full of hot oil. Seriously, don't buy a fryer without one.
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Cool zone - some fryers have a cool zone at the bottom of the tank where food debris sinks and sits at a lower temperature. This prevents debris from burning and contaminating the oil, extending oil life.
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Built-in filtration - as mentioned, this extends oil life and reduces operating costs.
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Tank material - stainless steel is standard and what you want. It's durable, easy to clean, and doesn't corrode.
We've written more broadly about equipment purchasing mistakes in our guide on common catering equipment mistakes and how to avoid them - several of the points apply directly to fryer purchases.
Frequently Asked Questions
What size commercial fryer do I need for a small restaurant?
For a small restaurant where frying is part of the menu but not the focus, a countertop fryer with 8-12 litre capacity or a compact freestanding unit with 12-15 litres is usually sufficient. If frying is central to your offering (like a fish and chip shop), go for a freestanding 15-20 litre unit minimum - or a twin-tank model to separate products.
How much does a commercial fryer cost in the UK?
Countertop electric fryers start around £150-£400. Countertop gas models run £300-£600. Freestanding electric fryers cost £400-£1,000, and freestanding gas models range from £500-£1,800. Twin-tank models cost roughly 50-70% more than their single-tank equivalents.
Is a gas or electric fryer cheaper to run?
Gas is generally cheaper to run in the UK because natural gas costs less per unit of energy than electricity. However, electric fryers are more energy efficient (they waste less heat), so the gap is smaller than the raw energy prices suggest. For high-volume frying, gas typically wins on running costs. For moderate or light frying, the difference is less significant.
How often should I change the oil in a commercial fryer?
It depends on usage. Heavy use (fish and chips, fried chicken) - change every 2-4 days with daily filtration. Moderate use - weekly with regular filtration. Light use - every 1-2 weeks. The key indicators are oil colour, smell, foaming, and the taste of the finished product.
Choosing the Right Fryer
It comes down to four questions: gas or electric, countertop or freestanding, how much capacity, and what's your budget?
Start with your menu. If frying is a core part of your operation, invest in a quality freestanding unit with good recovery times and built-in filtration. If it's a secondary cooking method, a reliable countertop model will do the job.
And don't forget the ongoing costs. Oil, energy, filtration, maintenance, waste oil collection - they all add up. The cheapest fryer on the shelf isn't necessarily the cheapest fryer to own.
If you're comparing options, browse our range of commercial fryers - we stock gas and electric models in countertop and freestanding configurations, with free delivery across the UK.
For a broader look at fitting out your kitchen, our complete commercial kitchen equipment list covers every category you need to think about.
Prices mentioned are approximate UK market ranges and may vary by brand and specification. Always ensure any fryer you purchase meets current UK safety standards. Oil temperatures, change intervals, and safety procedures should be adapted to your specific operation and documented in your risk assessment.
