How long does a gas hot water system last?

Most gas hot water systems last between 8 and 12 years depending on the brand, usage, and maintenance. Regular servicing can extend the lifespan. If your unit is over 10 years old and showing signs of trouble, it may be more cost-effective to replace it.

What size hot water system do I need?

The right size depends on your household size and water usage. A 1-2 person household typically needs a smaller continuous flow or 135L storage unit. Families of 4 or more usually need a larger storage system or higher flow-rate continuous flow unit. We can assess your needs on site.

Can you install any brand of hot water system?

Yes. We install and repair all major brands including Rinnai, Rheem, Bosch, Dux, and Thermann. We can supply units at trade pricing or install a system you have already purchased.

How long does installation take?

A straightforward like-for-like replacement typically takes 2 to 4 hours. If we need to change the location or upgrade gas lines, it may take longer. We will give you a clear timeframe when we quote.

Gas Hot Water Systems Installation & Repair

Suburban Gas and Plumbing supply and install or just install hot water services, cookers and heaters.

Whether your hot water system has stopped working or you are planning an upgrade, Suburban Gas and Plumbing can help. We supply, install, and repair gas hot water systems across Melbourne, covering all major brands including Rinnai, Rheem, Bosch, and Thermann.

We offer both continuous flow (instantaneous) and storage tank systems. If you are unsure which is right for your household, we will assess your needs and recommend the most efficient option. We source units at trade pricing, which means competitive rates whether we supply the system or install one you have already purchased.

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Free quotes for hot water system installation and repair.

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How it works

Step01

Tell us the issue

Call or enquire online. Describe the fault or the type of system you need.
Step02

We inspect & quote

We assess your current setup, recommend the best option, and provide a clear quote.
Step03

Install or repair

Our licensed gasfitter completes the installation or repair to Australian standards.
Step04

Test & commission

We test the system, check for gas tightness, and make sure hot water is running properly.

Licensed & insured

7 days, 8am – 8pm

Melbourne-wide service

Upfront pricing

Frequently asked questions

Most gas hot water systems last between 8 and 12 years depending on the brand, usage, and maintenance. Regular servicing can extend the lifespan. If your unit is over 10 years old and showing signs of trouble, it may be more cost-effective to replace it.
The right size depends on your household size and water usage. A 1-2 person household typically needs a smaller continuous flow or 135L storage unit. Families of 4 or more usually need a larger storage system or higher flow-rate continuous flow unit. We can assess your needs on site.
Yes. We install and repair all major brands including Rinnai, Rheem, Bosch, Dux, and Thermann. We can supply units at trade pricing or install a system you have already purchased.
A straightforward like-for-like replacement typically takes 2 to 4 hours. If we need to change the location or upgrade gas lines, it may take longer. We will give you a clear timeframe when we quote.