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A homeowner at 334A Yishun Street 31 HDB contacted Homeone for a Ferroli Water Heater Replacement after concerns about the safety and reliability of their existing unit, the Ferroli Cubo 15-OS. Although the heater was still functional, it had been installed many years ago and was showing signs of ageing. More importantly, the old installation did not comply with PUB regulations—lacking a drainpipe, using an undersized 1.5mm² electrical cable, and having no electrical bonding at all. These are critical safety elements required under Singapore’s CP5 and SS636 standards. We advised the owner to proceed with a full Ferroli Water Heater Replacement to ensure proper safety, performance, and long-term peace of mind. We supplied and installed an Ariston AN2 15 RS, a compact and efficient 15L model suitable for HDBs. The new heater installation was fully upgraded with compliant fittings, wiring, and bonding, and all works were completed under the supervision of a PUB-licensed plumber, with PUB submission completed upon handover.
Old Water Heater:
Ferroli Cubo 15-OS
Old Water Heater:
Ariston AN2 15 RS
During the initial inspection of the existing Ferroli water heater, our technician found several serious non-compliances:
No drainpipe connected to the pressure relief valve — risk of uncontrolled discharge
Undersized 1.5mm² cable, not compliant for heater load — risk of overheating
No electrical bonding, increasing risk of electrocution
Pipes and fittings were showing signs of wear and minor corrosion
Heater was nearing the end of its lifespan, although not yet leaking
These findings clearly indicated that a Ferroli Water Heater Replacement was necessary to avoid safety hazards and ensure compliance with Singapore’s plumbing and electrical regulations.
Homeone recommended replacing the ageing Ferroli water heater with the Ariston AN2 15 RS, a trusted model known for its space-saving design and improved safety features. This Ferroli Water Heater Replacement addressed all non-compliance issues and was carried out with the following upgrades:
Installation of a stainless steel drainpipe from the pressure relief valve to the nearest floor trap
Replacement of the existing 1.5mm² cable with a compliant 2.5mm² heat-rated cable
Application of electrical bonding between heater chassis and water piping (in line with CP5:1998 Clause 413-02)
Fitting of new stainless steel pipework (within 1 metre) and corrosion-resistant valves
Work completed under the supervision of a PUB Licensed Plumber
PUB submission completed after successful installation and testing
This solution ensured that the Ferroli Water Heater Replacement was safe, compliant, and built to last.
Dismantling
Isolated electrical and water supply
Safely removed the Ferroli Cubo 15-OS unit
Cleared all outdated pipe fittings
Installation
Mounted the new water heater securely
Connected stainless steel inlet/outlet pipes within 1 m, approved check valve and stop cock
Installed drainpipe, 2.5mm² cable, and earth bonding
Verified correct valve operation and secure sealing
Testing and Commissioning
Leak and pressure tests completed
Verified water temperature control and heater integrity
Final safety check and clearance
Documentation
Submitted installation details and photos to PUB for compliance
Work was completed under the supervision of our PUB Licensed Plumber
This Ferroli Water Heater Replacement at 334A Yishun Street 31 HDB demonstrates the importance of correcting outdated and non-compliant water heater installations. The old Ferroli Cubo 15-OS unit lacked essential safety features such as a drainpipe, proper wiring, and bonding. By replacing it with an Ariston AN2 15 RS, and upgrading all fittings and cables, the system is now safe, efficient, and fully compliant with PUB and EMA regulations.
Homeone ensures that every Ferroli Water Heater Replacement is carried out with precision, regulatory oversight, and long-term homeowner safety in mind. Whether for safety upgrades or failed units, our team delivers fully compliant solutions for all HDBs across Singapore.
Project Location: 334A Yishun Street 31 HDB
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