25 Mar 2024

Macro MA-20ODP Gas Heater Replaced With Rinnai REU-2024W-RS Gas Heater at Kovan Regency on 16 Mar 2024

  • Project location

    Kovan Regency

  • Property type


Macro MA-20ODP


Replaced Macro MA-20ODP Gas Heater at end of service life.


Replaced Rinnai REU-2024W-RS and corroded sections of cold water copper piping with new piping. Utilised single-use fittings during the replacement to ensure optimal joint integrity. Reconnecting old fittings again risks erosion, particularly in high-speed water systems, and raises the chance of corrosion in water and gas piping. This increases the risk of water or gas leaks. Replaced the faulty cold water sensor as part of overall maintenance to ensure optimal functionality.

The final result

Macro MA-20ODP Gas Heater Replacement

Old gas heater:

Macro MA-20ODP Gas Heater

The Macro MA-20ODP gas heater is a product manufactured by Macro.
Founded in 1988, Macro is now the biggest manufacturer of gas appliances in China and Southeast Asia.
The Macro MA-20ODP gas heater is a portable heater designed to provide warmth using propane gas.

Here’s some information regarding its type, efficiency, and safety:

1. Type: This is an outdoor gas water heater, equipped with a weatherproof body suitable for outdoor installation, such as on the exterior wall or AC ledge of a building.

2. Installation: Proper installation is crucial for safety and optimal performance.
Gas heaters need professional installation for proper venting, gas line connections, and compliance with safety standards.

3. Safety: Ensure gas heater safety to prevent accidents like fires, gas leaks, or carbon monoxide poisoning.
Following manufacturer instructions and ensuring proper ventilation are essential for safe operation.


New gas heater:

New gas heater:

Rinnai REU-2024W-RS

The Rinnai REU-2024W-RS is a gas water heater manufactured by Rinnai, a well-known brand in the heating and water heating industry.
Founded in 1920, Rinnai & Co. first manufactured and sold pressurized oil stoves.
By the late 1920s, it was a reliable maker of gas tabletop stoves, ovens, heaters, and hot-water units.
Here’s some information about its type, efficiency, and safety features:
1. Type: The Rinnai REU-2024W-RS is a tankless water heater, also known as an on-demand water heater.
Tankless water heaters heat water on demand, saving energy and ensuring a constant supply of hot water.

2. Efficiency: Tankless water heaters are generally known for their high efficiency compared to traditional tank water heaters.
The efficiency of the Rinnai REU-2024W-RS can vary depending on factors such as the fuel source (natural gas or propane) and the specific model.

3. Safety Features: Rinnai water heaters typically come equipped with various safety features to ensure safe operation.
Gas heaters should always be used with caution to prevent the risk of fire, carbon monoxide poisoning, or other hazards.
Following manufacturer instructions and ensuring proper ventilation are essential for safe operation.

Licensed Gas Heater Replacement
(Macro Gas Heater Replacement)

Gas & Plumbing Work

1. New Gas Heater Supply and Installation.
2. Gas Valve & Stop Valve Replacement
3. Pipe Works Partial Redo to comply with PUB
4. PUB Regulated Fittings Supply
5. New Control Panel Replacement


Electrical Work

6. Electric wire connects to isolator
7. Protective equipotential bonding


Gas Supply Compliance

8. Testing and commissioning.
9. Issuance of test certificate by Licensed Gas Service Worker in accordance with Gas Supply Regulation.
This is required by law for your safety.
After Sales Service

10. Homeone Engineering Warranty for 1 Year
11. Tank Covered by Manufacturer Warranty for 1 Years

Gas Heater Installation

  1. Gas Heater Supply
  2. Gas Heater Installation Workmanship
  3. Pipe and Fittings Comply with PUB Regulation
  4. Clean up before leaving
  5. Gas Testing Certificate
  6. One Year Homeone Engineering Warranty

Gas Heater not Working

If your gas heater is not working, there could be a number of possible causes.
One common issue is a lack of gas flow.
This can occur if the gas valve is turned off or if there is a problem with the gas supply.
A faulty thermocouple or ignition system may hinder the heater’s proper ignition.
Check gas supply and line for issues if your heater malfunctions.
Consider seeking professional help if basic checks fail to resolve the issue.
Regular maintenance and cleaning can help prevent gas heater issues and ensure safe, efficient operation.


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