• Bosch OptiFlow Professional External 12L Natural Gas Hot Water System 7736502491

    Bosch LPG External Hydro Power Continuous Flow 7716483601 hero image
    Bosch LPG External Hydro Power Continuous Flow 7716483601
    4.8 from 5 reviews
    • Overview
    • Specifications & manuals
    • Legendary service
    • Delivery, services & returns
    • Questions & answers

    Overview

    A hot water system is one of the most hardworking appliances in the home. That’s why you want an appliance you can rely on for your hot water supply. Bosch painstakingly engineer their hot water systems to improve performance and efficiency. This means you can wake up with an invigorating shower, or relax at night with a warm bath thanks to the Bosch OptiFlow Professional External hot water system.

    This model has a hot water flow rate of 12 litres per minute, making it ideally suited for one-person households in a studio or apartment. The water temperature on this system is adjustable, if you require hotter water for your laundry or kitchen. This appliance is powered by natural gas and features Bosch’s combustion management technology, resulting in an ultra-efficient and dependable hot water system.
    Suitable for single-person households.

    With 45-litres of hot water storage capacity, this system is ideally suited for households for single-person households.

    High temperature system

    This hot water system can be adjusted to temperatures higher than 50°C, if your laundry or kitchen requires hotter temperatures. If you need a higher temperature, the installation of tempering valves for bathrooms is required to prevent accidental scalding.

    Efficient engineering with natural gas

    This exceptionally efficient hot water system heats water with natural gas, and is designed to ensure low running costs and low emissions of greenhouse gases. A design that is kinder to your budget and the planet.

    Continuous flow system

    The continuous flow system is an efficient way to provide hot water for your home as it only heats up water when you need it. This means no large storage tanks so it saves you space as well.

    Specifications & manuals

    key Specifications
    Brand
    Bosch
    Finish Colour
    Grey
    Height (mm)
    570 mm
    Width (mm)
    300 mm
    Depth (mm)
    170 mm
    Model Number
    7736502491
    Fuel Type
    Natural Gas
    Tank Capacity
    12 L
    Weight (kg)
    10 kg
    Notes
    Waterproof powerpoint required
    warranty
    Manufacturer Warranty
    3 Years
    Warranty Note
    3 Years on all parts and labour'; 10 Years for the heat exchanger. Domestic use only
    Use
    Not intended or designed for commercial use.
    energy Efficiency
    Energy Star Rating
    6
    other Features
    Features
    ● Suitable for households with 1 bathroom
    ● 55, 60, 70°C setting options
    ● Compact and lightweight
    ● Frost protected
    ● Solar compatible water heater
    ● Electronically controlled modulation
    ● Up to 4 optional controllers, 1 x main Controller & up to 3 extra Bathroom controllers - see Accessories

    ● Set at 55°C, your plumber can configure for 60 or 70°C with a tempering valve
    ● If you require hotter than 50°C, an optional extra tempering valve is required for any water going to a bathroom or en suite
    This is an extra charge provided by your plumber
    electrical Connection
    Type of connection
    10A plug & lead
    country of Origin
    Origin
    China

    Recycling Partnership Program

    Bosch and Appliances Online – Proud Partners in Recycling!
    Bosch is a proud supporter of Appliances Online’s Packaging Recycling Program. Working together, we stop around 85% of packaging waste including cardboard, soft plastics and expanded polystyrene from polluting our environment or ending up in landfill. 

    Legendary service

    The Appliances Online Net Promoter Score (NPS) is based on feedback from 89,897 people, collected between August 2024 to August 2025. Learn more about the Net Promoter Score (NPS).
    Bravo Appliances Online BRAVO!!!
    Paul , Lane Cove
    There is a company out there today offering such great service
    Kerrie,
    Delivered the next day
    Judy, Fountaindale, NSW

    Delivery, services & returns

    Appliances Online is all about legendary service. We offer free next business day delivery, free connection, free removal and free recycling, and we even offer Saturday delivery and, in some locations, a Premium Delivery option that allows you to choose your own 2-hour delivery window.

    Questions & answers

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