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Hotflo 400L Electric Hot Water Storage

Hotflo 400L Electric Hot Water Storage

A mighty performing hot water tank

Rinnai - 10 year warranty on CylindersThe largest capacity in our range, our Hotflo 400L Electric Hot Water Storage System offers the highest capacity in our range, providing a reliable and abundant hot water supply for even the biggest Australian families. Backed by a 10-year warranty on cylinders, it’s designed to deliver lasting performance and peace of mind.

Engineered for efficiency and safety, the tank features thermostatic temperature control with an automatic safety shut-off. Its premium enamel lining combined with enhanced sacrificial anode protection ensures extended durability and a long service life.

With single or twin element configurations, standard sizing for emergency changeovers, and suitability for both internal and external installations, upgrading or installing a new Rinnai Electric Hot Water Tank is simple, fast, and cost-effective.

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Ideal for larger families (8+ people)

Flexible installation options

Single and Twin Element configurations available

Lead free

10 year cylinder warranty

Superior technology

  • Vitreous Enamel* lined steel tank for added durability
  • Inbuilt anode** protection extends the life of the tank
  • Dual handed, allows increased flexibility during installation
  • Pressure temperature relief valve included
  • Suitable for internal and external use
  • Thermostatically controlled with safety temperature shut off for added peace of mind
  • Single and Twin Element configurations available

Rinnai quality

  • 10 year cylinder warranty

*Vitreous enamel is a glass-like coating fused to metal at high temperatures. This process creates a durable, glossy, and corrosion-resistant surface. It's known for its hardness, resistance to scratches and stains, and ability to withstand high heat.
**An anode is a metal rod inside the hot water tank that helps prevent rust. It slowly corrodes over time so the tank stays protected and lasts longer.

FAQs

  • What size electric hot water storage unit do I need? >
  • What’s the difference between a single element and twin element? >
  • Which is more cost-efficient: a single element or a twin element hot water storage system? >
  • How long does it take to reheat my water with an electric hot water storage tank? >

The product information on this website (comprising product brochures, warranty information, installation manuals, diagrams, specifications and representations) relates to current products. This information may be different for superseded products. For superseded products please contact Rinnai to confirm product information.

Rinnai – HotFlo 400L Electric Hot Water Storage Unit Values
Ideal for: Peak period Warm climate No. of people 8 – 9
Cool 8+
Ideal for: Off peak period Warm climate
Cool 6+
Height Overall mm 1840
Outlet 1587
Inlet 237
Electrical Connection Lower 163
Upper N/A
Tank Diameter 675
Weight Empty kg 96
Electrical Supply Hz AC 240V 50
Heating Elements Available kW 3.6 / 4.8
Valve Relief Setting kPa 1000
Expansion Control Setting 850
With Expansion Control 680
Without Expansion Control 800
Water Connections mm RP 3/4 20
Ingress Protection Rating (AS1939) IPX4
Rated Capacity L 420
- Consumer Consumer
  • Hotflo Electric Hot Water Storage Brochure
  • Hotflo Electric Hot Water Storage Operation and Installation Manual
  • Hotflo Electric Hot Water Storage Warranty Booklet
+ Trade Trade
+ Guides/Manuals
  • Hotflo Electric Hot Water Storage Specification Guide
+ Photos Photos

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