What size gas geyser do I need?

The size of your geyser is determined by the outlets (or combined outlets) water flow rate.

What is water flow rate? This is how much water per minute will be release by either your tap, mixer or shower-head? You can calculate this by doing the bucket test.

Once you have determined each outlet’s water demand, you can combine the demands and work out exactly what your total usage would be. If you slow down your flow rate (smaller shower head) you can reduce your flow rate demand.

Single use application

(outlets can not run simultaneously)
  • 5L
  • 6L
Basin or Camping shower
Basin or Camping shower
  • 8L
Small Shower head
Small  Shower head
  • 10L
Medium Shower head
Medium Shower head
  • 12L
Large Shower head
Large Shower head
  • 16L
Bath
Bath
Diaphram activated

Diaphram activated

Low pressure

Low pressure

In very cold areas its important to choose a larger flow rate than your exact demand because the cold pipes will cool down the water and you will experience heat loss.

Multiple use application

(can run multiple outlets simultaneously)
  • 12L
Shower & Basin
Shower & Basin
  • 16L
2 Showers & Basin
2 Showers & Basin
  • 16L
Basin &Bath
Basin &Bath
  • 20L
Shower,Basin & Bath
Shower,Basin & Bath
Constant Temperature

Constant Temperature

Room Sealled Fan Forced

Room Sealled Fan Forced

You need a minimum of 16L to run a fairly HOT bath.