---
title: What size TESY cylinder do I need?
description: Tesy Cylinder Size
---
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# What size TESY cylinder do I need?
## Helping you size your TESY cylinder
When choosing the size of TESY cylinder you require, a good approach is to base this on the water volume required.
Some examples of appliances and their water consumption are;
- Average Shower - Approximately 50-60L of mixed hot and cold water
- Average Bath - Approximately 80L of water
- Average sink or Hand Basin - Approximately 3-9L of water
**EXAMPLE SCENARIO:** If you were looking to choose a cylinder for a bathroom which contains a shower and a sink, the combined average water consumption based on the above figures would be around 53-69L of water. Therefore a good size for this situation may be an 80L cylinder.
**FREQUENCY OF USE:** Another factor to consider is how frequently the appliances will be used as each cylinder has a stated warmup time . Using the same example above, if the shower was to be used twice in the morning one after another then you may wish to choose a slightly bigger size such as a 120L cylinder to avoid any heat up times between showers.
**IMPORTANT NOTES:**
- Always check the dimensions of the cylinder are suitable for where you intend to install the unit e.g.
- The cylinders are unvented and therefore are required by law to be installed by a G3 qualified plumber
I hope this helps!
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