Hot water heater tempering valve repair and replacement

hot water heater tempering valve repair replacement

What does a hot water heater tempering valve do?

The tempering valve (sometimes referred to as the temperature valve) on a hot water system mixes hot water with cold water to ensure a safe and consistent water temperature that is suitable for household use.  It helps prevent hot water scalding by regulating the water temperature.

Without the tempering valve (temperature valve), the hot water produced by a water heater can be too high for showering, bathing or washing hands. To cool down the water temperature, the tempering valve mixes cold water with the hot water to achieve a safe and comfortable temperature for safe household use.

A sensor in the tempering valve monitors the water temperature and a mixing valve then adjusts the ratio of hot and cold water to achieve the desired temperature.

The tempering valve is usually installed near the hot water heater or the plumbing between the water heater and the fixtures.

Along with preventing scalding, the tempering valve actually helps reduce energy consumption by allowing the hot water system to be set at a higher temperature whilst helping to extend the life of plumbing fixtures and reduce build up of sediment because it reduces the temperature differential between hot and cold water.

Hot water heater tempering valve repair and replacement service

To ensure your hot water system is operating safely and correctly, we recommend regular service every 5 years. If you supply our friendly hot water service technicians with the make and model of your water heater, we will be able to determine whether a service call is required.

Book a hot water heater service

To organise a service for your hot water system, contact our friendly team. We offer fast service to all Sydney suburbs. Once onsite, we can check your unitrol valve and other important parts are functioning as they should.  Our trucks carry thousands of replacement parts and can fix problems on the spot.


Have you been told by a plumber or hot water company that your hot water system can’t be repaired and needs to be replaced – at a considerable cost? If so, contact the hot water specialists here at Cheapa Hot Water for advice. Over the years we have saved countless customers thousands of dollars by undertaking cost-effective repairs to faulty hot water heaters when they had been told they couldn’t be fixed.  Don’t believe us? We can put you in touch with these customers for verification.  A phone call to Cheapa Hot Water may save you thousands! Call 0410 693 532 to speak to a hot water specialist now.

Further reading

cheapa hot water sydney

Cheapa Hot Water Sydney

Hot water is our business – it’s not a sideline. Each year we repair and install hundreds of hot water systems in homes and businesses across Sydney.

  • We offer free delivery of your new hot water system and complimentary disposal and recycling of your old water heater.
  • As one of Sydney’s largest hot water system suppliers, our enormous buying powers and ability to buy direct from the manufacturer means we can pass attractive savings on to our customers.
  • Our fully qualified, licensed hot water heater installers have over 25+ years of experience each. We are fully insured and pride ourselves on our old-fashioned customer service.
  • We are accredited service agents for all the hot water heater brands including RheemDux, Rinnai, Aquamax, Bosch, ConergyHockingApricusVulcanEdwards SolarSolahart, Everhot and more.
  • We are qualified to undertake all the plumbing and electrical work required to install a new hot water system. There is no need to waste time and money employing multiple trades.
  • We have all the equipment needed to install your hot water system today. We don’t have to hire or wait for other trades to arrive with the required equipment.

Save time and money by employing a local hot water expert

Did you know that often the repair and installation of a hot water system requires the expertise and qualifications of both a licensed plumber and a licensed electrician?

We are qualified to undertake any plumbing and electrical work required to ensure your hot water heater is repaired quickly and within budget. Plumbers who do not specialise in the installation of hot water heaters may need to outsource the electrical work required to another tradesperson, thereby holding up your hot water system repair or installation, adding extra expense due to additional call-out fees charged by employing two tradespeople.

Your hot water heater is an expensive appliance. Don’t risk voiding your warranty.

Additionally, most manufacturers won’t cover the terms of your hot water system warranty if it isn’t installed by a licensed hot water technician or a qualified plumber. Hot water tanks are an expensive appliance so why would you risk voiding your warranty by installing it yourself or employing the services of someone who isn’t licensed?

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