Rheem Hot Water — A Trusted Australian Name for Over 80 Years

Rheem has been manufacturing hot water systems in Australia since 1939, making it one of the most established and trusted names in the Australian hot water market. Known for reliable construction, broad capacity range, and strong warranty coverage, Rheem electric storage and instant boiling systems are a common specification across residential, commercial, and institutional installations nationwide.

At PlumbingSales.com.au, we stock 40 Rheem hot water products across three product families — electric storage (standard enamel tank), Rheem Stellar (stainless steel tank), and Rheem Lazer (instant boiling water units). Browse the full range and order online 24/7.

Our Rheem Hot Water Range

Rheem Electric Storage — Standard Enamel Tank

Rheem's core electric storage range covers capacities from 25 litres to 400 litres, with element options of 3.6kW and 4.8kW, and a choice of single or twin element configurations for larger tanks. Single element models heat the full tank from the bottom; twin element models add a top element that heats the upper portion of the tank independently — useful for maintaining a supply of hot water when demand is high or after heavy use.

Available in direct wired and plug-in configurations at the smaller end of the range (25L and 50L), these units suit a wide range of residential and commercial applications from compact apartments and offices through to large commercial facilities requiring 400-litre capacity.

Key capacity options in the standard range:

• 25L (direct wired 3.6kW and plug-in 2.4kW; dual-handed plug-in also available)
• 50L (direct wired 3.6kW and plug-in 2.4kW)
• 80L, 125L, 160L (3.6kW single element)
• 250L (3.6kW and 4.8kW single; 3.6kW and 4.8kW twin)
• 315L (3.6kW and 4.8kW single; 3.6kW and 4.8kW twin)
• 400L (4.8kW single; 3.6kW and 4.8kW twin)

All units feature a steel cylinder with durable enamel coating and a sacrificial anode for corrosion protection. Warranty: 7-year cylinder warranty on the 25L and 50L units; longer warranties apply to larger models — refer to individual product pages for details.

Rheem Stellar — Stainless Steel Tank

The Rheem Stellar range upgrades the tank material to stainless steel, providing superior corrosion resistance and extended service life compared to enamel-lined tanks — particularly beneficial in areas with aggressive water quality. Stellar models are available in capacities from 80L to 315L with 3.6kW and 4.8kW element options and single or twin element configurations.

Key capacity options in the Stellar range:

• 80L, 125L, 160L (3.6kW single element)
• 250L (3.6kW and 4.8kW single; 3.6kW twin)
• 315L (3.6kW and 4.8kW single; 3.6kW twin)

The Stellar range is suited to applications requiring long-term durability, premium tank longevity, or installations in water quality conditions where stainless steel provides a meaningful service life advantage over enamel.

Rheem Lazer — Instant Boiling Water Units

The Rheem Lazer range provides instant boiling water for commercial, office, and institutional applications — eliminating the need for kettles and delivering continuously available boiling water from a single under-bench or wall-mounted unit.

The Lazer range is available in three series:

Lazer Eco — Entry-level instant boiling for small to medium office and commercial use:

• 3L (70303W), 5L (70305W), 7.5L (70307W)

Lazer Office — Office-focused instant boiling unit:

• 3L (70103W)

Lazer Commercial — High-capacity commercial instant boiling for cafeterias, commercial kitchens, and high-demand institutional applications. Available in two finish/configuration variants (W and S series):

• 7.5L, 10L, 15L, 25L, 40L (W series)
• 7.5L, 15L, 25L, 40L (S series)

All Lazer units have free shipping to most areas Australia-wide.

Key Features & Benefits

• Broad capacity range — 25L to 400L in the electric storage range, covering single-person apartments through to large commercial and institutional installations
• Element and configuration flexibility — 3.6kW and 4.8kW element options; single element for standard heating, twin element for boosted recovery and high-demand scenarios
• Stainless steel option — The Rheem Stellar range offers a stainless steel tank for premium longevity and superior corrosion resistance over standard enamel-lined units
• Instant boiling capability — The Lazer range provides commercially rated instant boiling water for office, cafeteria, and institutional applications
• Australian-made heritage — Rheem has manufactured hot water systems in Australia since 1939, with strong local service and warranty support networks
• Strong warranty coverage — Rheem electric storage units carry cylinder warranties of 7 years and above depending on model; refer to individual product pages for warranty details
• Plug-in and direct wired options — Smaller units (25L and 50L) available in both plug-in and direct-wired configurations to suit existing electrical arrangements

Choosing the Right Rheem Hot Water System

Electric storage sizing. The right tank capacity depends on household or facility size and daily hot water demand. As a general guide:

• 1–2 people / small office: 25L–80L
• 3–4 people: 125L–160L
• 5+ people / larger households: 250L+
• Commercial / institutional: 315L–400L

For commercial and large residential applications, your licensed plumber can calculate the correct capacity based on peak demand, recovery rate, and usage patterns.

Single vs twin element. Single element units are the standard choice for most residential installations and recover the full tank volume from a single bottom element. Twin element units add a top element that independently heats the upper portion of the tank — better suited to high-demand households or commercial applications where rapid partial recovery between periods of heavy use is important.

Enamel tank vs Stellar stainless. The standard enamel-lined tank with sacrificial anode is reliable and cost-effective for most Australian water quality conditions. The Rheem Stellar stainless steel range is worth specifying in areas with aggressive or corrosive water, or where a longer tank service life is the priority regardless of water quality.

Instant boiling vs storage. For applications requiring boiling water on demand — commercial kitchens, office tearoom facilities, cafeterias, or staff amenity areas — the Rheem Lazer instant boiling range is the appropriate specification rather than a standard electric storage unit. Lazer units deliver continuously available boiling water without the need to wait for a tank to heat.

Installation requirements. All Rheem electric storage hot water systems must be installed by a licensed plumber and licensed electrician in accordance with AS/NZS 3500 and applicable state regulations. Your installer will confirm the correct unit for your site's electrical supply, space constraints, and plumbing configuration. For warranty and service support, contact the Rheem customer service centre on 1300 556 036.

Frequently Asked Questions

What sizes of Rheem electric storage hot water systems do you stock?

We stock Rheem electric storage hot water systems from 25 litres to 400 litres, covering the full residential and commercial capacity range. The standard enamel tank range runs from 25L to 400L; the Rheem Stellar stainless steel range covers 80L to 315L.

What's the difference between single element and twin element hot water systems?

Single element units heat the full tank from a bottom element, providing a consistent supply of hot water as the tank reheats. Twin element units add a top element that heats the upper portion of the tank independently — providing faster recovery of a usable quantity of hot water after heavy use, making them suited to high-demand households and commercial applications.

What is the Rheem Stellar range?

The Rheem Stellar is Rheem's premium electric storage range featuring a stainless steel tank instead of the standard enamel-lined steel cylinder. Stainless steel offers superior corrosion resistance and longer tank service life, particularly in areas with aggressive water quality or where maximum long-term durability is the priority.

What are Rheem Lazer instant boiling units used for?

Rheem Lazer units provide instant boiling water on demand for commercial, office, and institutional applications — replacing kettles and delivering continuously available boiling water for tearoom facilities, cafeterias, commercial kitchens, and staff amenity areas. Available in capacities from 3L to 40L across Eco, Office, and Commercial series.

Do I need a plumber to install a Rheem hot water system?

Yes. All hot water storage systems must be installed by a licensed plumber and licensed electrician in accordance with AS/NZS 3500 and applicable state regulations. Attempting to install a hot water system without the correct licences is illegal and will void the manufacturer's warranty. Contact a licensed plumber for installation and sizing advice.

What warranty do Rheem hot water systems carry?

Rheem electric storage systems carry cylinder warranties of 7 years and above depending on the model. Labour and parts warranty periods also vary by model and installation type. Refer to individual product pages for full warranty details, or contact the Rheem customer service centre on 1300 556 036.

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Shop Rheem Hot Water Systems at PlumbingSales.com.au

PlumbingSales.com.au stocks 40 Rheem hot water products across electric storage, Stellar stainless, and Lazer instant boiling ranges — available to order online 24/7. With over 60 years of industry experience and a 4.9-star rating from more than 7,200 verified customer reviews, we're a trusted supplier for licensed plumbers, builders, and facility managers across Australia.

Competitive pricing on the full Rheem range. Free shipping on Rheem Lazer instant boiling units to most areas Australia-wide.

Need help selecting the right Rheem system for your application? Call our team on 1800 341 972 or email [email protected]. For warranty and service support, contact Rheem directly on 1300 556 036.