LP Gas Cylinder Sizes Guide: 9kg, 19kg & 48kg Explained
Published 22 April 2025
Not sure which LP gas cylinder size is right for your home or business? We break down the 9kg, 19kg and 48kg options so you can choose confidently.
Overview of LP Gas Cylinder Sizes in South Africa
South African retailers and gas suppliers stock three standard LP gas cylinder sizes: 9kg, 19kg, and 48kg. Each size serves a different purpose, and choosing the right one depends on your consumption rate, appliance types, and available storage space. Alectra Gas supplies all three sizes and delivers them directly to Pretoria addresses.
9kg LP Gas Cylinder
Price at Alectra Gas: R295
The 9kg cylinder is the most popular size for residential use in South Africa. It is compact, easy to move, and suits a wide range of applications:
How long does a 9kg cylinder last? For a family of four cooking two to three meals daily, expect around two to four weeks. A gas heater running four hours a day will consume a 9kg cylinder in approximately five to seven days.
Storage: The 9kg cylinder is light enough to handle without assistance, making it ideal for flats and smaller homes without dedicated gas storage areas.
19kg LP Gas Cylinder
Price at Alectra Gas: R620
The 19kg cylinder is the sweet spot for most South African households that use gas for multiple appliances. It offers significantly more gas than the 9kg while remaining manageable for most adults to move with assistance.
Best for:
How long does a 19kg cylinder last? In a household cooking three meals daily and running a gas geyser, you can expect a 19kg cylinder to last two to four weeks. Cost-per-kilogram is better than the 9kg option, making the 19kg more economical for regular users.
48kg LP Gas Cylinder
Price at Alectra Gas: R1,550
The 48kg cylinder is a commercial-grade option suited to high-consumption environments. It is significantly heavier and bulkier than the smaller sizes and is typically installed in a fixed outdoor gas cage or manifold system.
Best for:
How long does a 48kg cylinder last? A busy restaurant may consume a 48kg cylinder within one to two weeks. A large home with a gas stove, geyser, and pool heater might get six to eight weeks from a single cylinder.
Installation note: 48kg cylinders must be installed by a certified gas technician and stored in a properly ventilated outdoor cage in accordance with SANS 10087 regulations.
Which Cylinder Size Is Right for You?
Use this quick guide:
Frequently Asked Questions
Can I use a 48kg cylinder for domestic cooking?
Yes, as long as it is installed correctly outdoors with the proper regulator and hose rated for the flow rate required. Many large homes use 48kg cylinders for economy and convenience.
Is a 19kg cylinder more cost-effective than a 9kg cylinder?
Generally yes. The price per kilogram decreases as cylinder size increases. If your consumption justifies it, upgrading from a 9kg to a 19kg cylinder will save money over time.
Do I need a special regulator for each cylinder size?
The regulator required depends on the appliance and gas flow rate, not just the cylinder size. Most household appliances use a standard low-pressure regulator. Commercial applications may need a high-pressure or adjustable regulator. Consult a gas technician if you are unsure.
How heavy is a full 48kg LP gas cylinder?
A full 48kg cylinder weighs approximately 48kg of gas plus the tare weight of the cylinder (typically 24–28kg), bringing the total to around 72–76kg. These cylinders are never hand-carried; they are rolled or moved with a trolley.