Hot Water System Sizes - The Right Size For Your Household
Running out of hot water every evening, or paying to heat a tank bigger than you need? Here is how size works, and our licensed plumbers supply and install the system that suits your home at a price agreed before any work starts.
- $0 call-out fee*No charge just to come and look
- Fixed Price QuotesUpfront pricing before work starts
- Aussie owned & operatedFamily-owned in Sydney since 2010
- Lifetime guaranteeIf our work fails, we fix it
Licensed & insured · Lic #306457C
Get a Free Hot Water System Quote
60 seconds · no obligation
The Hot Water System Sizes We Install
Find the size that matches your household, and you get a fixed price before any work starts.
135 To 170 Litre Gas
Gas storage heats back up quickly, so a smaller tank can suit a couple or a small family.
250 Litre Electric
A common size for a household of three or four on an electric tank.
315 Litre Electric
Suits a bigger family, or a household with two bathrooms in use at once.
400 Litre Electric
For large households on off-peak power, where the tank has to last all day.
Continuous Flow, No Tank
Sized by litres per minute instead of tank size, so it does not run out.
Heat Pump Systems
A tank heated by an outdoor unit, sized much like an electric tank.
Outdoor Gas Storage
Freestanding gas tanks for homes with a gas supply and room outside.
The Price Is Set Before We Start
Choosing a new hot water system is a big purchase. These three promises are how we keep it clear.
Fixed Price Quotes
Once we know your household and where the system goes, you get one price for the new system fitted and tested. It does not change on the day.
No Call-Out Fee*
Getting a plumber out to look at your current system and measure up costs you nothing during business hours. Nothing is charged until you have said yes to the price.
Pay Later At 0%
The right size system should not wait for payday. Spread the fixed price over a 0% interest payment plan and stop running out of hot water.
How Bad Is It?
Three situations that bring people to this page, and what to do about each.
No Hot Water Today
Running Out Every Evening
Old System, Planning A Change
How We Choose The Right Size
Getting hot water system sizes right starts with your household, not the biggest tank on the shelf.
Licensed plumbersLook At What You Have
We read the data plate on your current system for its size, type and age, and ask how many people use hot water and when. That shows whether the old size was ever right.
Upfront pricingCheck What Fits
We check the space, the power or gas supply, and whether a gas unit needs a flue or an outdoor spot. Then you get the options that will actually fit your home.
Fixed price firstSupply And Install
You choose the system, we supply it at a fixed price, fit it with the pipework it needs and test it before we leave. Nothing happens without your go-ahead.
Recent Hot Water System Jobs Across Sydney
Suburbs where we have sized, replaced or worked on hot water systems recently.
Video Testimonials
Hot Water System Sizes FAQs
Answer:
It mostly comes down to how many people shower and how close together. As a rough guide, one to two people suit a smaller tank, three to four people a mid-size tank, and five or more a large tank or a continuous flow unit. We confirm it against your actual household before quoting.
Answer:
On an electric tank, a family of four is often around 250 to 315 litres, depending on whether you are on off-peak power. Gas storage heats back up faster, so a smaller gas tank can do the same job. Two bathrooms in use at once pushes the size up.
Answer:
Small electric units around 50 litres can suit a single person in a unit, a granny flat or a single kitchen or laundry. They run out quickly with back-to-back showers, so they are rarely the right choice for a family home.
Answer:
A gas burner reheats the water much faster than an electric element, especially an off-peak electric tank that only heats overnight. That means a gas tank can be smaller and still keep up.
Answer:
By how many litres of hot water per minute it can deliver, not by tank size. The number on the front of the unit, such as 26, is that flow rate. Homes with more than one shower running at the same time need a higher flow rate.
Answer:
A larger tank keeps more water hot, so it loses more heat standing idle. Buying a tank far bigger than you need wastes energy, which is why sizing to the household matters.
Answer:
It depends on the size, the type and what your home needs to fit it, such as a new flue or gas line. You get one fixed price for the system supplied and installed before any work starts, and there is nothing to pay for us to come and look during business hours.
Get The Size Right The First Time
Tell us how many people live in the home and a licensed plumber will call you straight back with options and a fixed price.
- Same-Day Service Sydney-Wide
- Upfront Fixed Pricing
- Lifetime Workmanship Guarantee
- 0% Interest Payment Plans
- Licensed & Insured (#306457C)
*Terms and conditions apply.
Get a Free Hot Water System Quote
60 seconds · no obligation
Upfront fixed pricing quoted before any work starts. Terms and conditions apply.
