Designed and manufactured to meet New Zealand's energy performance standards, Rheem mains pressure electric water heaters (hot water cylinders) are top performers under a wide range of water pressures and conditiions. Models are rated at a maximum of 1000 and 1400 KPA water pressures respectivly (depending on the model). They not only operate on mains pressure but are also suitable for unequal or equal low pressure uses. The electric storage water heater (hot water cylinder) can deliver more than 40 litres of hot water a minute, enough to meet the needs of most households. Due to their insulation qualities, the optimum water temperature is maintained longer, saving energy and ultimately saving on your water heating account.

Rheem Optima is a mains pressure electric storage water heater ( hot water cylinder ) offering a solution to indoor and outdoor installation. With models for all households, the Rheem Optima is designed for long life and attracts a 10 year warranty on the Optima cylinder. With capacities from 180 to 400 litres, the Optima features the benefit of a user adjustable thermostat to control water temperatures. The 300 and 400 litre models are fitted with twin elements, supplying your home with hot water boosting 24 hours a day. As a Rheem Optima is a mains pressure water heater ( hot water cylinder ), it can deliver over 40 litres of hot water a minute.

The Rheem Heat Pump represents the latest generation in electric water heaters (hot water cylinders). With its large 310 litre storage capacity and increased recovery rate, it utilises advanced single-pass top-down heating technology. This revolutionary concept delivers hot water to the top of the tank, heating the tank from the 'top-down' and providing usable hot water faster. Its fast recovery rate minimises Heat Pump operation, extending product life. The Rheem Heat Pump is now packaged as two separate components. These are connected during installation to form a conventional cylindrical shape, on a single footprint. This change makes for simpler handling, delivery and installation. Best of all, installation can be completed by your local plumber. The economical Rheem Heat Pump uses solar energy from the sun as its primary fuel source. The solar energy gained from the sun means your Rheem Heat Pump uses approx. 1/3 the amount of energy of a conventional electric water heater (hot water cylinder). This means you can save up to 2/3's on your hot water energy consumption equating to a reduction of 2/3's in your water heating account.

Rheem low pressure water heaters (hot water cylinders) are pre-wired to meet New Zealand standards and building code requirements. With all popular-sized models, Rheem offers three inlets from which to choose from - bottom, left hand or right hand sides. Simply connect existing or new plumbing to the appropriate inlet. Plugs to seal off the unused inlets are supplied with the water heater (hot water cylinder). These water heaters are typically rated for a maximum of 76KPA water pressure. Some "Heavy head" (120KPA) models are also available.