Horizontal Electric Water Heater

The reliable choice.

Great for apartments. Provides exceptionally high durability and low downtime.

Blue Diamond Glass™ Technology

The patented Blue Diamond™ Glass formula which makes AOS tanks so lasting is known to only 7 people in the world.

Leading American Technology

A. O. Smith has been refining water heating technology for the last 140 years. Every A. O. Smith heater is equipped with cutting edge, patented technology. Other heaters may look like A. O. Smith heaters but they do not work the same way.

Built to Last

A. O. Smith’s patented Blue Diamond formula makes its water heater tanks the toughest and most durable tanks in the market.

The longest lasting heater in the world was made by A. O. Smith.

No OEM Factories

Other manufacturers use OEM factories so they can give you cheaper products, but every A. O. Smith water heater and its components are manufactured in-house.

3 Year Full Warranty

Other heaters only provide full warranties for one year. All A. O. Smith products are fully guaranteed for 3 years – parts and labor, making us the longest water heater warranty provider in Singapore.


  • Blue Diamond™ tank
  • Blue Diamond™ element
  • Ultra thick insulation

Blue Diamond Glass™ Technology

A. O. Smith water heaters are more durable than others. They easily last over 10 years. Their patented Blue Diamond glass lining significantly reduces corrosion and scaling.

▸ Glass Lining vs. Stainless Steel

Blue Diamond Glass™ Elements

Best scale resistance.
Highest heating efficiency.

▸ How do scales reduce efficiency?

We do not compromise on insulation.

Well insulated water heater tanks are very important because they lower energy costs.

▸ What insulation does AOS use?

Model Diameter (mm) Length (mm)
ELJH-30 Ø360 605
ELJH-40 Ø360 710
ELJH-50 Ø360 830
ELJH-80 Ø463 860
ELJH-100 Ø463 1025
Product Specifications
ELJH-30 ELJH-40 ELJH-50 ELJH-80 ELJH-100
Rated volume (L) 30 40 50 80 100
Power (kW) 2.0 2.0 2.0 2.0 2.0
Voltage/frequency (V/Hz) 230~/50 230~/50 230~/50 230/50 230/50
Temperature range (°C) 35 – 75 ± 5 35 – 75 ± 5 35 – 75 ± 5 35 – 75 ± 5 35 – 75 ± 5
Rated water pressure (MPa) 0.8 0.8 0.8 80 80
Inlet/outlet connection (inches) ½ ½ ½ ½ ½
Waterproof grade IPX1 IPX1 IPX1 IPX1 IPX1
Net weight (kg) 17 19 21 31 35