Bosch 4000S External Continuous Flow Hot Water Heater

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About Bosch 4000S External

The Bosch 4000S External hot water system delivers 12 litres of water per minute with a temperature rise of 25°C, making it ideal for a 1 bathroom home. Available in both natural gas or LPG the Bosch 4000S External is highly energy efficient boasting a 6 star energy rating.

Bosch hot water system

For an ideal replacement, or change-over, from the Bosch Pilot or HydroPower hot water systems there is the Bosch 4000S External continuous flow hot water heater.

Bosch 4000S External Hot Water Unit

Bosch 4000S External

Bosch 4000S External Temperature Controllers

Bosch 4000S External Temperature Controllers

The continuous flow technology is electronically controlled and the compact design allows for an appeasing look.

A convenient safety feature that is available, as an optional extra, with the Bosch 4000S External continuous flow hot water heater is the temperature remote controller.

This handy feature allows you to pre-set your desired water temperatures for different wet areas within your home. This is convenience at its best as you will no longer need to constantly fiddle with your hot and cold taps to find your required water temperature – all you need to do is turn on your hot tap and once your pre-set temperature has been reached that is where it will stay.

With the use of mixer taps becoming increasingly popular the temperature remote controller also provides you with greater peace of mind.

Mixer taps can be an attractive fixture for toddlers, who can usually easily flick the tap on themselves. If your single mixer tap was left in the hot position when this happens hot water scalding is highly possible.

Pre-setting your hot water temperature to not allow it to reach these boiling temperatures greatly reduces the risks of hot water scalding, not only to the young, but also to the mobility impaired who cannot move out of hot waters harm in a fast fashion.

No Interest Ever!* Payment Plan Options Available

No Interest Ever!* payment plan options available on hot water heater replacements to help ease any financial stress this burden may cause. If your bosch hot water heater is leaking, or you have no hot water, we can often have a plumber to you within the hour*.

Is the Bosch 4000S External hot water heater right for my property?

If your home, or unit, does not have the required space for an internally installed hot water heater then you will need to look at an external system. A hot water heater is a major appliance purchase for your property and one that needs to be made correctly.

Choosing the wrong hot water heater for your property can cost you valuable dollars going forwards due to the hot water heater having to constantly work in overdrive to meet up with your hot water heating requirements. Or, more than likely, you will be having more cold showers than you bargained for!

If you would like to know if the Bosch 4000S External gas continuous flow hot water heater would be the best option for your home then call a local hot water plumber from Jim’s Plumbing.

We have a team of plumbers located across all metropolitan areas of Adelaide, Melbourne, Perth, Sydney, Brisbane and Canberra ready and able to assist with all of your hot water heating needs.

We will happily come to your property to go through all options with you to advise on the ideal hot water heater for your home, or commercial property, and provide you with a no obligation quote for the supply and installation.

Bosch 4000S External repairs

Should you currently have a Bosch 4000S External hot water heater that requires a repair or service then call your local Jim’s plumber.

No matter if you’re in Adelaide, Sydney, Brisbane, Melbourne, Canberra or Perth we have a plumber on-call 24 hours a day, 7 days a week, including all public holidays.

In a hot water emergency we can be knocking on your door within an hour* of your call.

Below are the Bosch 4000S External specifications to assist in your decision if this unit may be suitable for your property;

Bosch 4000S External
Part No. Natural Gas7736502491 (55°C)Mj/hour90
Part No. LPG7736502492 (55°C)Energy Efficiency6 Star Rating
Part No. Limited Natural Gas7736502493 (50°C)Height 568mm
Part No. Limited LPG7736502494 (50°C)Width300mm
Installation TypeExternal OnlyDepth170mm
Ignition TypeElectronic IgnitionWeight10kg (dry)
Water Flow Rate12 L/min at a 25°C riseFuel TypeNatural Gas or LPG
Suitable for1 bathroomWarranty:
Minimum water inlet pressure100 (kPa)Parts & Labour3 Yrs.
Constant water pressure required for maximum flow100 (kPa)Heat Exchanger10 Yrs. (part only)
Maximum water inlet pressure1000 (kPa) 

Choosing the Correct Hot Water System

Choosing the correct hot water system can be difficult, as there are so many options to choose from; Click on the links to find out more about these systems.




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Please be advised that we may have additional Bosch Hot Water System models available.

Simply book a plumber online now, or phone 1300 133 509 to book now.

*NO INTEREST EVER!* PAYMENT PLAN, “Fees, terms and conditions apply”.

No Interest Ever!* Payment Plan offered through Certegy Ezi-Pay Express. No Interest Ever on your hot water heater replacement or new supply and installation, gas service, water service or drain replacement. Conditions apply.

Information on this page is subject to change. Commercial hot water systems also available on enquiry.

*Conditions apply.