17 Mar 2025

6 Tips for HDB HIP Storage Water Heater Safety & Regulations

6 Tips for HDB HIP Storage Water Heater Safety & Regulations

Introduction: Understanding the HDB HIP

The Home Improvement Programme (HIP) is a government initiative aimed at upgrading ageing HDB flats (typically 30+ years old). It addresses common maintenance issues such as leaks, structural repairs, and utility upgrades. While HIP enhances living conditions, homeowners must be aware of its scope and limitations, especially concerning regulated works like plumbing, electrical systems, and water heater installations.

1. HIP vs. New Builds: Key Differences in Oversight

Unlike new construction projects, HIP does not involve:

  • Architects: No redesign of layouts or structural changes, and no Resident Engineer for structural and compliance checks.
  • M&E (Mechanical & Electrical) Engineers: No comprehensive oversight by Electrical Resident Technical Officers (RTOs) or Mechanical RTOs.

Instead, HDB-appointed consultants oversee basic repairs, while contractors handle specific tasks. This cost-effective approach, however, can leave gaps in technical oversight, increasing potential risks for homeowners.

2. Limitations of HIP Contractors

In new builds, specialised contractors, such as NSC-certified Plumbing and Sanitary contractors, ensure compliance with safety codes. However, in HIP:

  • Plumbing and Sanitary Works: Often assigned to general builders who may not hold dedicated plumbing licences.
  • Electrical Works: Managed by general electrical contractors rather than full M&E engineering teams.

This increases risks if contractors lack expertise in regulated installations, such as electric storage water heaters.

3. Risks of Unlicensed Contractors in HIP

A. Builders Without Plumbing Licences

  • Leaks & Water Damage: Without Mechanical RTO supervision, water pressure after pump or pipe replacements may exceed 35m head (50 psi). Some cases have reported pressure above 120 psi, whereas most appliances are rated for a maximum of 116 psi (8 bar) or below.
  • Non-Compliance with PUB Standards: Unlicensed plumbing work may violate Singapore’s Water Services Regulations, leading to potential fines and unsafe conditions.

B. Electrical Contractors Working Beyond Their Scope

  • Water Contamination & Safety Hazards: An electrician installing a water heater without plumbing expertise may fail to comply with key safety requirements, such as:
    • Installing a double check valve to prevent backflow contamination.
    • Providing a drain pipe leading to the floor trap to prevent pressure relief valve (PRV) water from dripping onto users.
    • Preventing critical errors like plugging the PRV discharge, which can lead to dangerous pressure build-up and potential explosion.

4. Is Your Water Heater Installation Covered Under HIP?

A. Electric Storage Heaters

  • Not Automatically Included: HIP typically covers repairs, not new installations. Unless explicitly stated in your contract, assume that water heater installation is excluded.
  • Licensing Requirements: Only PUB-licensed plumbers and EMA-licensed electricians should install storage heaters to ensure compliance with safety regulations.

B. Electrical Contractors Working Beyond Their Scope

  • HIP contractors may not perform detailed inspections of existing wiring, let alone new installations. Do not assume compliance unless verified through official documentation.

    A past fatal electrocution case during a shower—just one week after an HIP upgrade—was attributed to improper heater circuit connections, highlighting the importance of rigorous checks.

5. How Homeowners Can Prevent Accidents

Essential Safety Measures:

Request Written Confirmation

  • Ask HDB/Town Council in writing: “Are electrical and water heater installations under this HIP compliant with PUB and EMA regulations?”

Escalate Concerns If Unsure

  • If HDB’s response is unclear, escalate the issue by contacting PUB (plumbing regulations) or EMA (electrical regulations) directly.
  • If concerns remain unresolved, consider raising the issue with your Member of Parliament (MP).

What to Avoid:

Reject “Under-the-Table” Offers

  • If contractors propose off-the-books installations (e.g., “Pay me separately”), refuse.
  • Unlicensed work voids warranties and poses serious safety risks.

Never Assume Compliance

  • Do not rely on verbal assurances. Demand proof of contractor licences and certifications.

6. Additional Safety Tips for Homeowners

  • Check contractor records by reviewing past complaints or public feedback.
  • Request a final inspection before approving completion. This should include a formal certificate listing the licensed plumber and licensed electrical worker (LEW) responsible for the installation.
  • Keep all communication in writing to ensure accountability and documentation in case of disputes.
  • Consult official guidelines from HDB, PUB, and EMA before proceeding with major installations. 

Conclusion: Stay Vigilant, Stay Safe

The HIP is a valuable opportunity to enhance your home, but its limited scope requires homeowners to ask questions and verify compliance. When dealing with water heaters and electrical systems:

Insist on licensed professionals.

Document all communications with HDB, PUB, and EMA.

Report unauthorised works immediately to prevent future hazards.

By taking these precautions, homeowners—especially elderly HDB residents—can ensure that their HIP experience enhances safety rather than introducing unnecessary risks.

For Further Guidance:

Consult HDB’s HIP handbook or visit the PUB and EMA websites for the latest compliance regulations.

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