Rinnai Stainless Steel Mains Pressure Indoor Hot Water Cylinder 300L Standard MRT

Description

Rinnai Stainless Steel Mains Pressure Indoor Hot Water Cylinder 300L Standard MRT

The Rinnai Stainless Steel Mains Pressure Indoor Cylinders are the premium electric hot water storage solution for New Zealand homes. Constructed from high-grade duplex stainless steel, these cylinders offer exceptional value, low maintenance requirements, and a 10-year warranty — making them the smart long-term investment for residential hot water.

Lightweight stainless steel construction makes transport and installation easier, while the absence of a sacrificial anode reduces ongoing maintenance. Solar and heat pump-ready variants with auto-reset thermostats are also available.

Key Features

Premium Duplex Stainless Steel Construction

The inner cylinder is manufactured from high-grade duplex stainless steel for outstanding longevity and corrosion resistance, with a galvanised steel outer casing.

No Sacrificial Anode Required

Unlike enamel cylinders, stainless steel models require no sacrificial anode — reducing ongoing maintenance requirements and long-term ownership costs.

Solar and Heat Pump Ready

Auto-reset thermostat (ART) variants are available, making these cylinders compatible with open loop solar systems and hot water heat pumps without requiring a cylinder replacement.

10-Year Warranty

Backed by Rinnai’s industry-leading 10-year cylinder warranty.

NZ MEPS Compliant

All models meet the New Zealand Minimum Energy Performance Standard. No cylinder wrap is required.

Indoor installation only. Not suitable for bore or tank water. Not suitable as a pool or spa heater. Maximum working pressure 850kPa.