28 Jun 2025

The Mayfair

Water Heater Rusty Replacement: Ariston PRO R 50H to PRO RS J 50 at The Mayfair on 23 Jun 2025

A homeowner at The Mayfair condo contacted Homeone after spotting signs of leakage from their ceiling. Upon inspection, we confirmed a classic case of “Water Heater Rusty.” The Ariston PRO R 50H storage heater had reached the end of its operational lifespan, with rust streaks visible on the tank base and joints.

Corrosion had also begun affecting the copper pipework, especially at the stop valve, which showed signs of wear and active leakage. The power supply cable was found to be a non-compliant 1.5mm² wire, and it lacked proper insulation markings, posing serious electrical hazards. The heater’s 50L size and installation above a false ceiling required a careful and safe dismantling process.

Project location
The Mayfair
Property type
Condominium

Before

Replacement of a Ariston PRO R 50H water heater to resolve heater problems end of service life.

After

The Ariston PRO RS J 50 has been newly installed to the existing water heater system, with all connecting pipework made of stainless steel. The installation includes a new stop valve, double check valve, drain pipe, electric bonding, and 2.5mm² wire, and a submission has been filed to PUB to ensure safety and compliance with PUB regulations. Additionally, Homeone offers a 1-year warranty on this installation, complementing the manufacturer's warranty, ensuring peace of mind and reliable service.

Table of Contents

Water Heater Rusty Replacement: Ariston PRO R 50H to PRO RS J 50 at The Mayfair

Old Water Heater:

Ariston PRO R 50H

Old Water Heater:

Ariston PRO RS J 50

Site Findings

Severe water heater rusty condition on the tank base and fittings
Corroded stop valve and water leaks from joints
Non-compliant 1.5mm² electrical supply cable with no printed specs
Heater near end-of-life and installed above a false ceiling

Proposed Solution for Water Heater Rusty

To resolve the water heater rusty condition and meet all safety standards, Homeone replaced the old Ariston PRO R 50H with a modern, corrosion-resistant Ariston PRO RS J 50. Due to the size (50L) and elevated location, the job was carried out by two experienced technicians under the supervision of a PUB-licensed plumber.

Scope of Work Included:

Safe dismantling of an old rusty heater
New Ariston PRO RS J 50 securely installed
Replacement of all corroded pipe fittings with stainless steel pipes
Installation of a new PUB-approved stop valve and double-check valve
Properly routed drainpipe to the nearest trap
Upgraded electrical supply to 2.5mm² cable, complying with EMA guidelines
Applied electrical bonding to meet CP5:1998 Clause 413-02

All works were submitted to PUB to ensure compliance with local regulations.

Work Scope for Water Heater Rusty Replacement

Removal & Site Prep

Shut off the water and power supply
Safely removed the corroded Ariston PRO R 50H unit
Disconnected non-compliant fittings

Installation of Ariston PRO RS J 50

Mounted the new Ariston PRO RS J 50 securely
Installed stainless steel inlet/outlet pipework
Fitted double check valve, drainpipe, and stop valve
Applied protective electrical bonding
Recommissioned the system and tested for leaks and safety

Testing & Commissioning

Leak testing and pressure validation
Bonding continuity check
Verified safe operation of temperature relief valve and new drainage line

Documentation

Submit the required documents to PUB by a PUB-licensed plumber

Conclusion

This water heater rusty case at The Mayfair was resolved professionally with a full safety upgrade. The failing 50L Ariston unit was replaced with a new Ariston PRO RS J 50, complete with bonded electrical connections, backflow protection, and compliant pipework.

At Homeone, we handle high-capacity ceiling heater replacements with the care and expertise required, always in accordance with PUB and EMA regulations, giving homeowners long-term peace of mind and reliable hot water.

Project Location: The Mayfair

The Mayfair