Hot water cylinder replacement cost in Hobart
Replacing a hot water cylinder in Hobart runs $720 to $2,250 for a like-for-like electric storage swap, with most jobs landing around $1,350 installed. A failed tank is the most common hot water emergency in Tasmania - here is what drives the price and how to keep it at the low end.
Quick answer - cylinder replacement cost in Hobart
| Job | Typical Hobart range (2026) |
|---|---|
| Electric storage cylinder - like-for-like swap | $720 – $2,250 (typ $1,350) |
| Gas storage cylinder replacement | $1,075 – $3,150 |
| Old system removal & disposal | $90 – $315 |
| Anode replacement (extends tank life) | $180 – $450 |
| Emergency / same-day replacement | $1,350 – $4,050 |
Signs your cylinder needs replacing
A storage cylinder rarely dies without warning. The usual tells are rusty or discoloured hot water, water pooling around the base of the tank, a steady drop in how long the hot water lasts, banging or rumbling as sediment cooks on the element, and simply age - most electric and gas storage tanks last 8 to 12 years in Hobart's soft Hydro-fed water. Once a tank is leaking from the cylinder itself (not a fitting), it is replacement time; tanks cannot be patched.
What affects the cost
Tank size and fuel type
A 125L tank for a couple sits at the bottom of the range; a 250L or 315L family tank costs more to supply and to lift into place. Electric storage is the cheapest to buy and install; gas storage costs more and needs a gasfitter.
Location, access and compliance
An easy laundry or external-wall swap is quick. A tank in a roof space, under the house, or up a flight of stairs adds labour. Tasmanian installs must include an AS-compliant tempering valve ($135 – $360) if one is not already fitted, and old tanks need licensed removal and disposal.
Itemised example - Glenorchy, 250L electric like-for-like
| Line item | Cost |
|---|---|
| 250L electric storage cylinder - supply | $620 |
| Plumbing labour (disconnect, install, reconnect) | $370 |
| Old tank removal & disposal | $130 |
| Tempering valve (AS 3498 compliance) | $135 |
| Flexi connectors, isolation valve & fittings | $95 |
| Total | $1,350 |
Switching fuel or stepping up to a heat pump changes the maths - see our Hobart heat pump hot water and gas vs electric running cost guides.
Frequently asked questions
How much does it cost to replace a hot water cylinder in Hobart?
A like-for-like electric storage swap runs $720 to $2,250, with most jobs around $1,350 installed. A gas storage cylinder is $1,075 to $3,150. Upgrading to a heat pump costs more upfront but qualifies for rebates.
How long does a hot water tank last?
Most electric and gas storage cylinders last 8 to 12 years in Hobart. Replacing the sacrificial anode at around the five-year mark can add several years before the tank itself corrodes through.
What are the signs my cylinder is failing?
Rusty or discoloured hot water, water pooling at the base, hot water running out faster than it used to, banging or rumbling noises, and age beyond 10 years. A leak from the tank body itself means replacement - cylinders cannot be repaired.
Can I replace a hot water cylinder myself?
No. In Tasmania the work must be done by a licensed plumber, and an electric tank also needs a licensed electrician for the hard-wiring. A compliant tempering valve is required, so DIY is neither legal nor insurable.
Is a same-size replacement cheaper than upgrading?
Yes. A like-for-like swap reuses the existing wiring or gas line and the same footprint, so it is the cheapest option. Upsizing, switching fuel, or moving the tank adds labour and sometimes new wiring or pipework.
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