Several factors cause the element of an instant shower to blow.
These include:
1. ‘Air lock’ – Mostly after the shower/ element is newly installed or after the main tank empties completely and then refills.
- After first-time installation of an instant shower/ element, it’s COMPULSORY to run the water first before turning on the power switch. Thereafter, you can start with either as long as you’re sure there has been no water outage.
- If your building experiences water outages or you suspect air may be trapped in the plumbing system, it’s recommended to always run the water first before switching on the power.
2. Temperature adjustment when the shower is running and the power switch is on.
- If you need to adjust the water temperature, first turn off the water.
- Also avoid frequent temperature adjustments.
3. Setting the temperature to very hot puts more strain on the heating element.
- It also consumes more power, hence high power bills.
- Consider setting a low or medium water temperature.
4. Clogged shower pores.
- Blockage of the shower pores causes a reduction in water flow which leads to over-heating. This eventually causes the element to blow.
- Ensure you clean your shower head if you notice some pores are clogged.
5. Very hard/ salty water.
- This takes some time depending on how hard/ salty the water is.
- The best instant showers for very hard/ salty water use a more durable COIL rather than a regular spring-type heating element. These tend to be a bit pricey but they most durable solution for very hard/ salty water.
6. Using the faucet/ tap below the shower valve while the shower is running.
- This may introduce air into the piping system, potentially causing the element to burn.
- Avoid using the tap when the instant shower is on.
In the unfortunate event that your instant shower’s element blows, you can buy a replacement element rather than discarding the whole shower head.

