How Much Gas Is in a 19kg Bottle? Duration, Cost & Uses Explained
Published 13 May 2025
A 19kg gas bottle is the most popular household size in South Africa. Here is exactly what you get, how long it lasts, and whether it is right for your home.
What Is in a 19kg Gas Bottle?
A 19kg gas bottle contains exactly 19 kilograms of liquefied petroleum gas — propane, butane, or a blend of both, depending on the supplier. It is the most widely used cylinder size in South African homes because it balances capacity with manageability.
The tare weight (empty cylinder weight) for a standard 19kg cylinder is typically 14–16 kg. A full 19kg cylinder therefore weighs approximately 33–35 kg in total. While manageable by one fit adult, most people prefer to handle these cylinders with assistance or use a trolley.
How Long Does a 19kg Gas Bottle Last?
The answer depends on your appliances and usage patterns:
Cooking only (family of four, two to three meals daily): 4–8 weeks. Gas stoves are efficient, and a 19kg bottle goes a long way for cooking alone.
Cooking and gas geyser (family of four): 2–4 weeks. Adding a gas water heater significantly increases consumption.
Cooking, geyser, and one gas heater (four hours/day in winter): 1–2 weeks. Heavy combined use reduces cylinder life considerably.
Small restaurant or guest house kitchen: 3–7 days, depending on how busy the kitchen is.
For most South African households using gas primarily for cooking, the 19kg bottle is the ideal size — long enough between refills to be convenient, while remaining affordable.
How Much Does a 19kg Gas Bottle Cost?
At Alectra Gas, a 19kg cylinder exchange costs R620, delivered to your Pretoria address for a flat R50 fee. Order a 19kg cylinder online here. That works out to approximately R32.63 per kilogram, which is slightly better value per kilogram than the 9kg option and far more economical per kilogram than most alternatives.
If you currently use a 9kg cylinder and are finding that you refill frequently, switching to a 19kg cylinder is likely to save you money. Two 9kg exchanges at R295 each equals R590, which is slightly less than a single 19kg exchange at R620 — but the 19kg gives you 19 kg compared to 18 kg for two 9kg cylinders, plus only one delivery needed.
Who Should Use a 19kg Bottle?
The 19kg bottle is ideal for:
If your gas demand exceeds one 19kg cylinder every two weeks, it may be worth considering the 48kg cylinder for better value and fewer deliveries.
Frequently Asked Questions
How heavy is a full 19kg gas bottle?
A full 19kg gas bottle weighs approximately 33–35 kg in total, combining the 19 kg of gas with the cylinder tare weight of 14–16 kg.
Can one person carry a 19kg gas bottle?
It is possible but not recommended. A 19kg bottle weighs 33–35 kg when full. Use a trolley or ask for assistance to avoid back injury. Alectra Gas drivers will position the cylinder for you at delivery.
How long does a 19kg bottle last for cooking only?
For a family of four cooking two to three meals per day, a 19kg bottle typically lasts 4–8 weeks. Single-person households may get two to three months from a 19kg bottle used only for cooking.
Is the 19kg bottle safe to store indoors?
No. LP gas cylinders of any size must be stored outdoors in a ventilated area, not inside the home. See our guide on safe LP gas storage for full SANS 10087 compliance requirements.