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Gas Hot Water System Installation Cost

Gas Hot Water System Installation Cost & Replacement Prices

Gas hot water systems also come in both tankless and storage options and are a popular choice where natural gas is available on the property. Tankless systems range in price from around $750-$1995, while storage tanks vary from about $850-$1800 depending on the size, design and model.

Supply and install prices are for same size installs / replacements. An additional $185 charge applies where a tempering valve is required.

* Free removal of old tank is included.

Gas Hot Water Systems (Tanks)

Big Savings with some of our low Gas Hot Water System Prices for Supply and Install

System Type Average Minimum Price Average Maximum Price
Gas Storage Tanks $1075* $2335*

Gas Hot Water System Installation Cost & Replacement Prices

135L Tank Price
5 Star 160L Prices
170L Tank Price
Indoor Tank Prices
5 Star 130L Prices
Tankless Prices
Outdoor Gas 135L

PRICE RANGE $1,195 – $1,995
Brand (Model) Accurate Price H (mm) W (mm) D (mm) Cylinder Leaking Labour on Cylinder Parts & Labour
Rheem 135 Ltr (347135) PH: 1300 465 463 1558 422 502 10 # 1 # 1 #
Vulcan 135 Ltr (648135) PH: 1300 465 463 1558 422 502 7 # 1 # 1 #
Thermann 135L (135THMB4N) PH: 1300 465 463 1600 422 502 7 # 1 # 1 #

*Click here or call 1300 465 463 for more detail
#Conditions apply. Domestic installs only.

Outdoor Gas 170L

PRICE RANGE $1,395 – $2,195
Brand (Model) Accurate Price H (mm) W (mm) D (mm) Cylinder Leaking Labour on Cylinder Parts & Labour
Rheem 170 Ltr (347170) PH: 1300 465 463 1858 422 502 10 # 1 # 1 #
Vulcan 170 Ltr (648170) PH: 1300 465 463 1858 422 502 7 # 1 # 1 #
Thermann 170L (170THMB4N) PH: 1300 465 463 1900 422 502 7 # 1 # 1 #

*Click here or call 1300 465 463 for more detail
#Conditions apply. Domestic installs only.

Outdoor Gas 330L

PRICE RANGE $1,495 – $2,295
Brand (Model) Accurate Price H (mm) W (mm) D (mm) Cylinder Leaking Labour on Cylinder Parts & Labour
Rheem Stellar 130 Ltr (Stellar 850330) PH: 1300 465 463 1600 485 558 10 # 3 # 1 #

*Click here or call 1300 465 463 for more detail
#Conditions apply. Domestic installs only.

Outdoor Gas 360L

PRICE RANGE $1,595 – $2,395
Brand (Model) Avg Min Price H (mm) W (mm) D (mm) Cylinder Leaking Labour on Cylinder Parts & Labour
Rheem Stellar 160 Ltr (Stellar 850360) PH: 1300 465 463 1900 485 558 10 # 3 # 1 #

*Click here or call 1300 465 463 for more detail
#Conditions apply. Domestic installs only.

Indoor Gas 135 & 170 Litre

PRICE RANGE $1,595 – $2,395
Brand (Model) Accurate Price H (mm) W (mm) D (mm) Cylinder Leaking Labour on Cylinder Parts & Labour
Rheem 135 Ltr (800135) PH: 1300 465 463 1615 425 500 10 # 1 # 1 #
Rheem 170 Ltr (800170) PH: 1300 465 463 1915 425 500 10 # 1 # 1 #

*Click here or call 1300 465 463 for more detail
#Conditions apply. Domestic installs only.

* FREE REMOVAL of old tank. Supply & Install prices are for replacements in same position with easy, level access & for same size / type of tanks located on the ground. Free parking available on site or just outside building. Otherwise additional charges may apply. Extra charges include : $185 for a Tempering Valve installed (per Government regulations) and 1% for Visa/Mastercard.

Continuous Flow Hot Water System Installation & Replacement Price

Gas Tankless

PRICE RANGE $1,195 – $1,995
Brand (Model) Accurate Price H (mm) W (mm) D (mm) Cylinder Leaking Labour on Cylinder Parts & Labour
Rheem Metro 26 Ltr (876T26) PH: 1300 465 463 520 355 187 10 # 3 # 3 #
Rinnai Builders 26L (B26) PH: 1300 465 463 571 350 194 12 # 3 # 3 #
Rinnai Infinity 26L (REU-VRM2626WG) PH: 1300 465 463 571 350 194 10 # 3 # 3 #

*Click here or call 1300 465 463 for more detail
#Conditions apply. Domestic installs only.

Frequently Asked Questions

Gas systems typically range from $1,000 to $2,500, with installation adding $500–$1,000 depending on complexity.

While initial costs may be higher, gas systems often have lower running costs, making them more economical over time.

Running costs depend on gas rates and usage but are generally lower than electric systems of similar capacity.

^ FREE REMOVAL of old system. Supply & Install prices are for replacements in same position with easy, level access & for same size / type of system located at a reachable height when standing at ground level & not in a recess box. Free parking available on site or just outside building. Otherwise additional charges may apply. Extra charges include : $285 for a High Performance Tempering Valve installed (per Government regulations) and 1% for Visa/Mastercard.

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