Premium Australian Made Stainless Steel Hot Water Tanks
Earthworker Energy Manufacturing Cooperative premium Australian-made hot water storage tanks use corrosion-resistant marine grade stainless steel for a long life, and come with a full 15 year warranty.
Ours are the only tanks available that use our distinctive patented recycled polymer casing, which acts as a 2nd layer of insulation – providing outstanding thermal performance, and making them famously sleek, rust-free, easy to transport and extra durable.
Choosing an Earthworker Energy hot water tank supports new energy manufacturing jobs in the Latrobe Valley.

Product Features
- Marine-grade stainless steel cylinder
- Long-lasting
- Low-maintenance (no need for anode)
- 15 year full warranty*
- Unique recycled polymer outer case
- Provides 2nd layer of insulation for extra heat-retention & efficiency
- Reduces plastic waste
- Durable, rust-free
- Range of models & applications – Electric, heat pump, hydronic, and gas or electric-boosted solar designs available
- ‘Solar Ready‘ – perfect for emergency hot water replacements and/or use with solar hot water systems
- ValveCosy PTR Insulator included to reduce heat-loss
- Range of sizes: 160L, 250L, 315L, 420L
- Available in Grey (100% recycled case) or Merino colour (15% recycled)
- Cases with recycled content contain natural variation in colour/gradient
- Internal heat exchange coils can be fitted for use with wet-back and water-jacket wood stove systems
Earthworker Energy Manufacturing Cooperative hot water tanks are available direct, or as part of a range of solar and heat pump hot water systems from Reclaim Energy, NeoPower, SolarArk and others.
*Warranty details here.

Sleek, Durable, Reliable
Tank Volume | External Diameter | Height |
160L | 620mm | 1140mm |
250L | 620mm | 1620mm |
315L | 620mm | 1990mm |
420L | 700mm | 1880mm |
All Ports are 20mm (3/4″ BSP)