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Hot Water Cylinders

Hot Water Cylinders

Is your electrical hot water system up to scratch?

Traditional hot water cylinders are one of the biggest users of electricity in your home.
Set incorrectly, the thermostat can risk burns from hot taps, waste a lot of energy, lead to continuous noisy boiling, or leave you in the cold more than you’d like.

If your cylinder is noisy or the water is cold or too hot, it often means the thermostat is faulty or needs to be adjusted.

It should not be more than 55° Celsius at the tap so it is low enough not to burn, and it must be 60° Celsius at the cylinder to prevent the growth of Legionella bacteria. Don’t have the thermostat on your hot water system higher than necessary – an extra 10° Celsius could cost you $20 to $30 a year in wasted electricity.

Key Electrical can replace and adjust thermostats and elements to ensure you a safe, reliable supply of hot water.
If there’s no water at all it’s probably a plumber’s job – and we can recommend a good plumber to help.
We can also offer advice on other types of water heating for renovations or new builds, including “instant” systems and cylinders with boost elements for quick recovery.

Call Key Electrical on 04 499 0033 for any hot water problems where the temperature is not right – We can service the entire Wellington region and we’ll get you out of both hot and cold water!


Your comment will be published within 24 hours.


  • Mr WordPress
    June 18, 2010, 8:51 pm REPLY

    Hi, this is a comment.
    To delete a comment, just log in and view the post's comments. There you will have the option to edit or delete them.

  • Leaking pressure relief valves
    July 31, 2018, 7:33 pm REPLY

    Cool post, i;m having some issues with my cylinder so i’ll be giving you guys a call. Think it’s a bit out of my depth fixing it myself.

  • Hot water cylinder repairs Napier
    October 30, 2020, 9:10 pm REPLY

    I am so glad that I found your blog and I absolutely love your information about the hot water and the tips you have shared are awesome. I liked and it is wonderful to know about so many things that are useful for all of us! Thanks a lot for this amazing blog!! This resource https://mepplumbing.co.nz/ i came across recently and is nice too as this particular site

  • Gas fitter service
    June 15, 2021, 7:48 pm REPLY

    Do not hesitate to contact your nearest plumber to do inspection. Reminders from us here @northshoregasfitters!

  • Sohel'Rana
    November 21, 2023, 5:24 pm REPLY

    I appreciate your clear explanations and the emphasis on safety throughout the process.
    It’s evident that you care about your readers’ well-being and want us to tackle these issues safely and effectively.
    Your blog has become my go-to resource for appliance-related issues,
    and I’ll be sure to share it with friends and family who might face similar problems with their appliances.
    Keep up the fantastic work!


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