Independent, family-run LPG supplier near York since 1988

Est. 1988Sparrow Hall, Scrayingham, York

Gas cylinder sizes, explained simply.

Which cylinder suits your equipment, how long it will last, and how many to keep on site. A practical guide, plus advice from our team if you’d rather ask.

Rows of red LPG gas cylinders lined up together

Common sizes

The cylinder sizes you'll come across.

LPG cylinders are sold by the weight of gas they hold. These are the sizes most commonly used by businesses in the UK.

CylinderGasTypically used forWorth knowing
47 kgPropaneLarger commercial kitchens, space heating, agricultural and process equipmentHeavy: usually connected in pairs with a changeover valve and left in place
19 kgPropaneCatering, mobile catering, site heaters and general commercial useA popular all-rounder that one person can move with care
18 kg FLTPropaneLPG-powered forklift trucksA specific forklift cylinder designed to be used lying on the truck
Smaller propanePropanePortable equipment, light-duty heating and outdoor cookingEasy to handle, but needs changing more often
15 kg and smallerButaneIndoor equipment designed for butane, such as cabinet heatersNot suited to outdoor or cold use

Exact sizes vary between suppliers. Tell us about your equipment and we’ll confirm the cylinders we can supply for it. Not sure about the gas? Compare propane and butane.

Estimating your use

How long will a cylinder last?

A quick sum gives you a useful estimate, so you can decide on cylinder size and how many to keep on site.

  1. Find the heat input. It is on the appliance data plate, in kW.
  2. Multiply by hours of use. That gives you the energy used per day in kWh.
  3. Divide by about 13.8. Each kilogram of propane holds roughly 13.8 kWh, so this gives kilograms of gas per day.

A worked example

A 10 kW space heater running for 8 hours uses about 80 kWh a day. Divided by 13.8, that is roughly 5.8 kg of propane a day, so a 19 kg cylinder would last a little over three days and a 47 kg cylinder around eight.

Real use varies with thermostat settings, weather and how hard equipment works, so treat this as a starting point. If the numbers point to several cylinders a week, it’s worth asking whether bulk LPG would suit you better.

Use the form below to tell us what you’re running and we’ll recommend the right cylinder and quantity.

Handling and storage

Keep cylinders safe on site.

Upright, always

Store, transport and use cylinders upright unless they are designed otherwise, such as forklift cylinders.

Outdoors and ventilated

A secure, well-ventilated outdoor area on firm, level ground is best.

Away from low spaces

LPG is heavier than air. Keep cylinders away from drains, cellars, pits and building openings.

Handle with care

Larger cylinders are heavy. Use a trolley and the right lifting technique, and close valves on empties.

Delivery and exchange

Getting cylinders to your door.

Once we’ve agreed the right cylinders, order by phone, email or voicemail. Most of our cylinder orders are delivered the same or next working day, and we collect your empties at the same time.

Find out more about gas cylinder delivery, or see commercial cylinder supply for setting up a regular arrangement.

For commercial customers

Switching your business gas is on us.

We’ll cover your outgoing tank uplift fees with up to £1,000 in account credit.

Account credit

up to£1,000

towards your outgoing supplier's tank uplift fees

Bulk commercial customers only, with a minimum usage of 20,000 litres per year. We’ll cover the outgoing supplier’s tank uplift fees up to a total value of £1,000, paid as credit on your Rectory Gas Supplies customer account. Terms apply.

Cylinder advice

Ask us which cylinder you need.

Describe what you’re running and we’ll come back with a recommendation for gas type, cylinder size and quantity.

Prefer to talk?

01759 371 305

Monday to Friday 7am to 4pm

Ask us which cylinder you need

Please enter your name.

Please enter a valid email address.

Please enter a phone number.

Please enter your delivery postcode.

For example a commercial kitchen, space heaters on a building site, or forklift trucks. Include how much you think you use if you know.

Please tell us a little about how you use gas.

FAQs

Cylinder size questions.

Quick answers about choosing a cylinder.

Match the gas to your equipment first, then choose a size based on how much you use and how easily you can move and store it. Use the worked example on this page or ask us for advice.

Yes, larger installations often use two cylinders with an automatic changeover valve, so gas switches to the full cylinder when one empties. The installation should be set up by a Gas Safe registered engineer.

A forklift truck (FLT) cylinder is designed to be mounted on an LPG-powered forklift and supply gas in that position. Standard cylinders must not be used on forklifts.

The simplest way is to keep a full spare connected via a changeover valve, or check the weight. Planning deliveries around your typical use avoids surprises.

Use our quick quote form or call us on 01759 371 305, Monday to Friday 7am to 4pm. Tell us your site postcode, what you use gas for and roughly how much, and we’ll do the rest.