Gas Tea Urn or Water Boiler for Mobile Catering: UK Buyer’s Guide

Last updated: September 2026

Ask ten caterers what they boil their tea water in and you’ll get three different words for the same thing. Urn. Boiler. Water heater. The kit is similar. The fuel is not — and that’s the bit that decides whether your setup works on a field pitch.

In 30 seconds:

• “Tea urn”, “gas urn” and “water boiler” all describe the same job: holding hot water on tap all day.
• Only one LPG water boiler is sold in the UK — the Fracino Atlantis Mini Gas. Everything else is electric.
• Electric urns are cheap (from £102) but need mains or a generator big enough for a heating element.
• Propane runs the Atlantis Mini Gas at about 1.8 kW of gas plus a 50 W electric element — so a small battery or inverter covers the electrics.
• Size on output per hour, not tank size. A 7-litre boiler that refills fast beats a 20-litre urn that doesn’t.

Not sure which way to go? Our LPG vs electric water boiler comparison walks through the same decision with the numbers side by side.

Why does the wording matter?

It matters because search results mix the two. Search “gas tea urn” and nearly everything that comes back is electric. Read the fuel line before you look at the price.

Why propane and not mains gas?

Mobile catering runs on propane in a cylinder. It works off-grid, it’s portable, and every commercial mobile appliance is set up for it at 37 mbar.

The honest summary. The most expensive mistake we see isn’t buying the wrong urn. It’s buying a cheap electric one, then discovering you need a bigger generator to run it. A 3 kW element on a field pitch turns a £102 saving into a £900 problem.

Urn or water boiler — what’s the difference?

In practice, very little. The trade uses “urn” for the cheaper manual-fill units and “water boiler” for the plumbed or auto-fill ones.

Manual-fill urn

• You pour water in the top by hand.
• Cheapest option — from £102.
• Fine for a stall doing a few dozen drinks.
• Someone has to keep refilling it.

Auto-fill water boiler

• Fed from a tank or mains, tops itself up.
• Costs more, but nobody has to watch it.
• Better when you’re busy and short-handed.

The real split isn’t the name. It’s the fuel.

Fracino Atlantis Mini Gas — the only LPG water boiler on the UK market

Quick specs

• Fuel: LPG (propane) — burner rated 1,800 W, plus a 50 W electric element
• Capacity: 7 litres
• Output: around 30 litres of hot water an hour
• Temperature: pre-set 90°C, adjustable 80–95°C
• Size: 530 mm H × 310 mm W × 430 mm D
• Safety: low water cut-out and high temperature cut-out
• Build: stainless steel, slim-line case and drip tray, made in Britain
• Price: from £1,280
• View the Atlantis Mini Gas →

Best for

Food vans, trailers and event pitches with no mains power. Anywhere you already carry propane for cooking.

What it does well

• Runs hot water all day on the propane you already have on board.
• Needs only 50 W of electric — a leisure battery handles that easily.
• Takes up 310 mm of counter width, so it fits a tight serving hatch.
• Holds temperature without hammering your generator.

Don’t use it for

• Indoor venues that ban cylinders.
• Very high-volume tea service where you need 40 litres standing.
• Sites where you have plenty of free mains power — electric is cheaper to buy there.

The trade-off. It costs roughly ten times a basic urn. What you’re buying is independence from the mains, and a much smaller generator bill.

One thing to be clear about. Fracino is the only UK manufacturer making an LPG water boiler. Buffalo, Burco, Blizzard, Cygnet and Parry water boilers are all electric. If a listing says “gas urn” and the price is under £200, it’s electric.

Electric catering urns — what they cost and what they suit

Electric urns are the default for cafes, halls, offices and any pitch with a mains hook-up. Most in this size run from an ordinary 13-amp socket.

Manual-fill urns we stock

• 10 litre: from £102 — Blizzard MF10, Cygnet and Burco versions from £112
• 20 litre: from £119 — the common all-rounder
• 30 litre: from £139
• 40 litre: from £205 — for hall catering and big events

Plumbed and auto-fill electric boilers

• Fracino Atlantis Mini (electric, 3 kW): 7 litres, around 30 litres an hour, 510 mm H × 170 mm W × 410 mm D — from £739
• Fracino Atlantis (6 kW): the bigger sibling for constant service — from £779

Best for

Indoor catering, cafes, village halls, and any van with a reliable mains hook-up.

Don’t use them for

• Off-grid pitches on a small generator.
• Setups where the generator is already near its limit.

Browse the full range on our water boilers and catering urns page.

LPG vs electric — a straight comparison

How to read that table. If you have mains power, electric wins on price and there’s no contest. If you don’t, the sums flip. A generator big enough to carry a 3 kW element costs more than the difference between the two boilers.

What size do you actually need?

Size on output per hour, not on how much the tank holds. A boiler that refills quickly serves more people than a big urn that empties and then sits cold.

A rough guide

• Quiet stall, drinks on request: a 10-litre manual-fill urn is plenty.
• Steady trade, food plus drinks: 20 litres, or a 7-litre auto-fill boiler.
• Busy event, queue all day: an auto-fill boiler with 30 litres an hour output.
• Hall or function catering: 30–40 litres standing, mains powered.

Recovery time is the number that bites. Recovery is how long the unit takes to reheat after you’ve drawn off a jug. On a manual-fill urn it can be ten minutes or more. That’s a long queue.

Running an LPG water boiler safely

Propane only. Butane stops vaporising below about 2°C, so it’s useless for UK outdoor trading — it’s a patio and camping fuel, not a commercial one.

What the setup needs

• A propane cylinder, sized for your day — see our LPG cylinder sizes guide.
• A 37 mbar fixed-outlet regulator and a current-standard LPG hose. Our hose and regulator guide covers the standards.
• Installation and annual checks by a Gas Safe registered engineer with CP44 commercial mobile catering certification.
• A quick bubble-test on the connections before you start trading.

Getting it running. Water goes in before the burner goes on, every time. Our LPG water boiler setup guide runs through the first-fire sequence.

Keeping it running. Limescale is what kills water boilers in hard-water areas. Descale on a schedule — the cleaning and descaling guide explains how often. If something’s misbehaving, start with the LPG water urn troubleshooting checks.

Warranty, plainly. Fracino warranty cover is back-to-base. There are no engineer site visits for units this size — the boiler goes to the Fracino workshop. Collection and return run to roughly £210 in total, or you can drop it in yourself and pay nothing for carriage. Our servicing and warranty page sets out what’s covered.

Which one should you buy?

• No mains power: Fracino Atlantis Mini Gas. It’s the only LPG option, and it works.
• Mains power, low volume: a 10 or 20 litre manual-fill urn from £102.
• Mains power, high volume: a 30 or 40 litre urn, or a plumbed Fracino Atlantis.
• Mixed — some indoor, some field work: buy the LPG boiler. It works in both places.

Ready to order? See the Fracino Atlantis Mini Gas →

Frequently asked questions

Is there such a thing as a gas tea urn?

Yes, but only one on the UK market: the Fracino Atlantis Mini Gas. It runs on propane, with a burner rated 1,800 W plus a 50 W electric element. Every other water boiler and catering urn sold in the UK — Buffalo, Burco, Blizzard, Cygnet, Parry — is electric only.

Can I run a tea urn on butane instead of propane?

No. Use propane. Butane stops turning into gas below about 2°C, so on a cold UK morning it simply won’t feed the burner. All commercial mobile catering appliances are set up for propane at 37 mbar. Butane belongs on a patio heater, not in a food van.

How much does a gas water urn cost?

The Fracino Atlantis Mini Gas starts from £1,280. Electric catering urns start from £102 for a 10-litre manual-fill unit and reach around £205 for 40 litres. The gap looks big until you price a generator that can carry a 3 kW electric element.

What size generator do I need to run an electric urn?

A single 13-amp urn draws about 2.6–3 kW on its own. You need at least a 3 kW generator for that one appliance, with nothing else running. Add a fryer or a coffee machine and you’re into 5 kW or more. That’s why off-grid traders choose the LPG boiler.

How many drinks will a 7-litre boiler serve?

Capacity is the wrong number to judge it by. The Fracino Atlantis Mini Gas is rated at around 30 litres of hot water an hour, so it keeps refilling while you serve. A 20-litre urn holds more at the start but takes far longer to recover once it’s empty.

Do I need a Gas Safe engineer to fit an LPG water boiler?

Yes. Any propane appliance in a commercial mobile catering unit must be installed and checked by a Gas Safe registered engineer holding CP44 commercial mobile catering certification. Expect an annual check. Most event organisers and local authorities ask to see the certificate.

Can I use an electric urn off-grid with a battery?

Not sensibly. A 3 kW element would flatten a normal leisure battery in minutes and needs a very large inverter. Battery power suits lights, tills and pumps. Heating water is a job for propane.

How often should a catering water boiler be descaled?

It depends on your water. In a hard-water area, monthly is sensible; in a soft-water area you can stretch it. Scale is the most common reason a boiler slows down or trips its cut-out, and it isn’t covered by warranty.