170L Gas Storage Hot Water Systems from $1,489
170L Gas Storage Hot Water Systems
Explore 170L gas storage hot water systems for moderate-to-higher household demand. Compare burner recovery, Natural Gas or LPG configuration, dimensions, gas input and replacement suitability before choosing a 170-litre gas storage water heater.
What Is a 170L Gas Storage Hot Water System?
A 170L gas storage hot water system is a tank-style gas water heater with a nominal storage capacity of around 170 litres. It keeps heated water ready for use and reheats the tank with a gas burner as hot water is drawn off.
This larger gas-storage capacity is commonly considered where a 135L system does not provide enough reserve, or where the household regularly has several showers or other significant hot-water draws within a short period.
Is a 170L Gas Storage Hot Water System Big Enough?
Moderate-to-Higher Demand
170L provides additional stored reserve for households with more substantial daily hot-water use.
Back-to-Back Showers
The larger tank gives more buffer when several people use hot water close together.
Baths & Larger Draws
More storage can help when baths or higher-flow fixtures consume a large amount of hot water at once.
Like-for-Like Replacement
If an existing 170L unit has met household demand, another similar-capacity gas storage system can be a straightforward replacement path.
170L Tank Size vs Burner Recovery
A 170L gas storage system combines a larger stored reserve with burner recovery. The tank litres determine how much hot water is available immediately, while the burner determines how quickly the system replenishes that reserve after use.
For households with concentrated morning or evening demand, recovery can be just as important as the extra storage capacity.
The larger stored reserve can make a meaningful difference during back-to-back use, but the final result still depends on burner recovery and actual household demand.
Should I Choose a 135L or 170L Gas Storage System?
Choose 135L where hot-water demand is lower to moderate and compact size is important. Choose 170L where the household needs more stored reserve before relying on burner recovery.
The larger 170L tank can provide more breathing room for back-to-back showers, baths and heavier evening use, while 135L can be more practical where space is restricted.
Are 170L Gas Storage Systems Available in Natural Gas and LPG?
Availability depends on the product range. Gas storage systems can be offered in Natural Gas or LPG configurations, and the selected system must match the property’s actual fuel supply.
Do not assume Natural Gas and LPG versions are interchangeable simply because they have the same tank capacity or external appearance.
Does a 170L Gas Storage System Need a Larger Gas Line?
Possibly. Gas pipe sizing depends on the appliance burner input, pipe length, regulator or meter capacity and other gas appliances on the property.
If the new 170L system has a different burner input from the existing unit, the gas supply should be checked rather than assuming a like-for-like tank capacity means a like-for-like gas load.
Does Star Rating Matter on a 170L Gas Storage System?
Yes. The gas star rating helps compare efficiency between suitable gas storage models. A higher rating can indicate better use of gas under the applicable rating method.
Efficiency should be compared after confirming that the storage capacity, burner recovery, fuel type and installation arrangement are all suitable.
Does a 170L Gas Storage System Need a Flue?
Gas storage systems need to safely manage combustion products, but the exact arrangement depends on the appliance design and whether it is intended for indoor or outdoor installation.
When replacing an existing 170L tank, compare the new model’s location, clearance and flue requirements rather than assuming all systems use the same arrangement.
Are All 170L Gas Storage Systems the Same Size?
No. Similar-capacity tanks can differ in height, diameter or width, base footprint, gas connection, hot and cold water positions and required clearances.
Measure the installation area and access path before ordering, particularly where the tank sits beside walls, fences or other equipment.
What to Compare Between 170L Gas Storage Systems
| Feature | Why it matters | What to check |
|---|---|---|
| Tank capacity | Determines stored hot-water reserve. | Whether 170L suits actual household demand. |
| Recovery rate | Determines how quickly hot water is restored after use. | Compare manufacturer recovery information and burner input. |
| Fuel type | Natural Gas and LPG configurations are different. | Match the appliance to the property’s actual gas supply. |
| Gas efficiency | Affects gas use for otherwise suitable models. | Compare star rating on like-for-like systems. |
| Dimensions | 170L systems can vary physically. | Height, diameter/width, base footprint, access and clearances. |
| Connections & flue | Affects replacement complexity. | Gas, hot/cold water, relief valve and combustion arrangement. |
Do I Need New Valves with a Replacement 170L Gas Tank?
The replacement system needs valvework and pressure control suited to the exact cylinder and installation. Existing valves should not automatically be assumed suitable just because the old tank has the same nominal capacity.
Compare the new product’s pressure requirements and relief-valve specification as part of the replacement assessment.
Replacing an Existing 170L Gas Storage Hot Water System
Before ordering, photograph the old data plate and record the brand, model, tank capacity, Natural Gas or LPG configuration, burner input, dimensions, pressure information, gas connection, hot and cold water positions and flue or outdoor arrangement.
Also consider whether the existing 170L system actually met demand. If it regularly ran out, investigate recovery and household use before automatically assuming another 170L tank will solve the problem.
Can a 170L Gas Storage System Be Too Large?
Yes. If household hot-water use is modest and a smaller gas storage tank already meets demand comfortably, the extra 170L reserve may provide little practical benefit while using more installation space.
Choose the larger tank where the additional stored reserve solves a real demand issue rather than simply because it fits.
170L Gas Storage Hot Water Questions
Common questions specifically about 170-litre gas storage capacity, burner recovery, Natural Gas and LPG, 135L vs 170L sizing and replacement fit.