Water Heater Singapore
Reason for the Callout
The existing Rheem 85VP6S storage water heater was visibly leaking from the tank body, prompting the homeowner to seek a compliant replacement solution.
Landed
Rheem 85VP6S Replacement with PUB Submission at Lorong Paya Lebar
A homeowner at Lorong Paya Lebar reported a leaking Rheem 85VP6S water heater. Inspection confirmed internal corrosion and missing PUB-mandated safety features. We replaced it with a new Rheem 85VP6S, fully compliant with SS636 and documented through a PUB Submission under a PUB Licensed Plumber’s supervision.
Before: Rheem 85VP6S
After: Rheem 85VP6S
Date Of Replacement: 21 Mar 2025
Project Location: Lorong Paya Lebar
Before Replacement:
The old water heater showed signs of severe internal rust, and the hot water output was discoloured. There was no double check valve, drain pipe, or earth bonding, posing a hygiene and electrical hazard.
After Replacement:
We replaced the faulty heater with a new Ariston AN2 15 RS unit. New safety fittings were installed to ensure clean water delivery and safe electrical performance.
Inspection Findings 
- Visible tank body leakage due to internal corrosion
- No anti-vacuum valve installed
- Missing double-check valve at cold inlet (non-compliant with SS636)
- Corroded fittings and rust around pipe joints
- No previous PUB Submission or documentation on record
Components Replaced for PUB Submission Compliance:
- Rheem 85VP6S electric storage heater
- Anti-vacuum valve – Prevents tank collapse by allowing air in during pressure drops; required for PUB compliance.
- Double Check Valve – Prevents backflow contamination
- Drain Pipe – Safely channels overflow water
- 2.5mm² Cable – Provides essential electrical bonding and supplies a new power supply cable for the heater.
- Earth Bonding – Ensures electrical safety
- Gate Valve – Allows shut-off for maintenance
Replacement work scope:
- Isolated power and water supply
- Dismantled and disposed of leaking Rheem 85VP6S
- Cleared corroded pipework and fittings
- Installed new Rheem 85VP6S
- Fitted anti-vacuum valve per the manufacturer’s specification
- Drain Pipe: Ensures safe discharge from PRV
- 2.5mm Cable & Earth Bonding: Protects users from electric shock risks
- Installed PUB-compliant double-check valve
- Replaced pipes with stainless steel (within 1m)
- Verified bonding continuity
- Leak and pressure testing conducted
- Final inspection completed
- Submitted all documentation and photo records as part of the PUB Submission
Our PUB Licensed Plumber has endorsed that the work is done in accordance with the conditions stated below:
- All water service installations must be in accordance with the Public Utilities (Water Supply) Regulations, Singapore Standards 636 for Water Services, and all other relevant statutory requirements.
- The proposed works shall not adversely affect the existing water supply reticulation system.
- The proposed water storage heater is installed in accordance with the specifications and requirements of the manufacturer.
- The installation of double-check valves is safe and effective in preventing backflow and the back-siphonage of water from the storage water heater through the heater inlet pipe, and will be safe for use.
Conclusion:
This project highlights the importance of a PUB Submission, even for same-model replacements. The original installation lacked key safety features. Our team carried out the replacement in full compliance with SS636, under the supervision of a PUB Licensed Plumber. All works were recorded through a PUB Submission to ensure safety, traceability, and regulatory compliance.