Electric Hot Water Unit Replaced in South Yarra
Completed Job Summary
An electric hot water system replacement was completed at a residential property in South Yarra following reports of inconsistent hot water performance and delayed warm-up. The existing unit was replaced with a Stiebel Eltron 3PH 27kW instant electric hot water unit, followed by testing and commissioning.
25 May 2026
Taylor
Senior Plumber
81697
This job record is derived from first-party technician notes and the Simpro job management.
Customer report
The customer reported that the hot water system was performing inconsistently. Some days the system provided hot water normally, while on other days it took a long time to warm up. The issue had been present for several months and had become progressively worse. A service appointment was arranged to assess the hot water system and complete the required replacement works.
Diagnosis & Technical Assessment
The service was undertaken in response to ongoing reports of inconsistent hot water performance and delayed warm-up. The existing electric hot water system was assessed as part of the replacement process, with the agreed scope involving the removal of the existing unit and the installation of a new Stiebel Eltron instant electric hot water system.
The replacement works included isolating both the water and electrical supplies before disconnecting the existing pipework and associated system connections. The existing unit was removed to allow installation of the replacement system.
A Stiebel Eltron 3PH 27kW instant electric hot water unit was installed, together with associated pipework modifications required for the new installation. The quoted scope also included installing a tempering valve, where applicable to the system configuration.
Following installation, the system underwent testing and commissioning procedures. The technician recorded the completed works as a clean swap-over, with completion records confirming final checking and site clean-up following the installation process.
All work was completed in accordance with the Victorian Building Authority (VBA) regulatory framework.
Solutions delivered
The completed solution involved replacing the existing electric hot water system with a Stiebel Eltron 3PH 27kW instant electric hot water unit. The replacement scope was selected and documented within the approved quotation and invoice for the property.
To complete the installation, the water and electrical supplies were isolated before the removal of the existing system and associated pipework connections. New connections were installed as required to accommodate the replacement unit. Provision was also included for installing a tempering valve, where applicable, in the final configuration.
Following installation, testing, and commissioning, the new system was placed into operation. The technician recorded the replacement as a clean swap-over, with completion records confirming that all works were checked and the work area was cleaned before the job was completed.
Tools, Parts & Systems Used
- Stiebel Eltron 3PH 27kW Instant Electric Hot Water Unit
- Electric hot water system
- Tempering valve
Outcome & Results
The electric hot water system replacement was completed at the South Yarra property using a Stiebel Eltron 3PH 27kW instant electric hot water unit. Installation works included isolating services, replacing the existing system, connecting new pipework, and commissioning activities.
Completion records confirmed testing, final checking of the installation, and site clean-up following the replacement works.
All work was carried out in accordance with relevant Australian Standards and safety requirements.
Repair vs Replacement
Electric hot water systems may be repaired or replaced depending on system condition, performance history, and the scope of work selected for the property. When replacement is chosen, the installation typically includes isolating services, removing the existing unit, installing the replacement system, and commissioning before the system is returned to service.
For this South Yarra project, the approved scope included replacing the existing electric hot water unit with a Stiebel Eltron 3PH 27kW instant electric hot water system. The completed works included installation, testing, and commissioning of the replacement unit.