The Off-Grid Wood Fired Hot Tub

Around 3–4 hours from cold to bathing temp (roughly 38–40°C), with the cover on, in mild Australian conditions.

Pre-warm with a slightly bigger starter fire, keep the cover fully on, and circulate the water with the included paddle every 30 minutes during heat-up.

Once you're at temperature, a smaller ongoing fire will hold heat comfortably for the duration of your soak.

Most orders ship within 15 business days of payment confirmation, backed by our On-Time Dispatch Guarantee — if we miss it, we credit you $50 per business day late, capped at $500.

Free delivery to Perth and Sydney metro. Flat-rate shipping to the rest of Australia. NT and remote postcodes quoted on request.

The Off-Grid Wood Fired Hot Tub comfortably fits 2 adults. The interior is 1.8m long × 0.61m wide × 0.61m deep — oval (stadium shape) — and holds around 550L when filled to a comfortable bathing depth.

It's designed for couples, solo soaks, or a parent with a child. If you want something a small group can sit in together, look at the round pool tanks (Family Plunge fits 5 adults, Urban Plunge fits 3) — though those run on a pump and filter, not a wood fire, and serve a different use case.

On a non-combustible base, at safe distance from anything flammable.

Safe surfaces: compacted cracker dust, gravel, concrete, stone pavers, natural earth, slate. Most customers use compacted cracker dust or pavers — both are cheap, drain well, and look intentional.

Surfaces it cannot go on: timber decks, decking composite, artificial turf, or any combustible surface. The wood fire coil kit produces an open fire while it's running — it's the same fire-safety logic as a backyard fire pit or pizza oven.

Clearance: at least 3m from main structures (house walls, pergolas, sheds) and at least 3m chimney clearance from eaves, vegetation, or washing lines. Jurisdiction-specific clearance to property lines applies — check with your local council if you're unsure.

No. Unlike our pool tanks, the Off-Grid Wood Fired Hot Tub does not require council approval and does not need to be fenced.

The reasoning: the tub is filled and drained for each use rather than holding water permanently, and it's classified as an outdoor hot tub (in the same category as a wood-fired bathtub) rather than as a pool. The 30cm-water rule under AS 1926.1 applies to pools and spas that hold water permanently — it doesn't apply to a tub that's emptied between sessions.

Some councils may have local wood-smoke or outdoor-fire restrictions. We recommend a quick check with your local council if you live in a smoke-restricted area or close to neighbours, but no formal application is needed.

We offer a 30-Day Money-Back Guarantee.

If you don't love your hot tub, return it within 30 days of delivery — even if you've already used it — for a full refund of the purchase price.

The only condition: you cover the cost of returning the tub to our nearest metro warehouse. Once we receive and inspect it, we issue your refund.

If your order arrives damaged, faulty, or not as described, that's separate — we'll repair, replace, or refund under your Australian Consumer Law rights regardless of timing. Email hello@terratanks.com.au and we'll sort it.

Two options:

1. Siphon it out. Run a standard garden hose from inside the tub to a drainage point lower than the tub (a garden bed, gutter, or grate). Start the siphon and gravity does the rest. This is what most customers do.

2. Use the drain plug. The tub has a drain plug at the back. If you site the tub on a base with built-in drainage (a slight slope to a drainage pit, or a paver setup with a gap underneath), you can pull the plug and let it empty.

Refill is straightforward — a standard garden hose to a comfortable bathing depth (~550L for 2 adults) takes 60–90 minutes.

Select the “Custom Colour” add-on option before checkout.

We coat the exterior using Raptor coating, the same ultra-durable finish used on off-road vehicles, so it’s built to handle harsh outdoor conditions without chipping or fading like standard paint.

After placing your order, send your colour code (e.g. Dulux or Colorbond) to hello@terratanks.com.au or we’ll reach out to you right away to confirm the details.

If you’d prefer to chat it through, you can also call us on +61 424 661 542.

Australia-wide, freezing is rarely an issue.

For most of the country (Perth, Sydney, Brisbane, most of VIC and SA): water sits well above freezing year-round and a tub used at least once a week effectively never freezes. With the cover on, water typically loses 15–18°C per day — so even an unused tub stays well above freezing.

For alpine or sub-zero areas, you have three options:
- Drain fully between soaks (the simplest answer).
- Leave only ~125mm (5 inches) of water in the bottom — a small ice volume can't damage the tub.
- Float a partially inflated inner tube or a couple of sealed empty plastic bottles on the surface — they absorb the expansion if the surface ice forms.

If you're in an alpine zone and bathing weekly, draining is still the cleanest approach. If you're using it less often, the reduced-water + flotation method works.

Treat the tub the same way you'd treat a backyard fire pit or pizza oven:

- At least 3m clear from main structures — house walls, pergolas, sheds.
- At least 7.5m from property lines (this varies by jurisdiction — check with your local council if you're close to a boundary).
- Chimney top at least 3m from flammable materials — eaves, vegetation, hanging branches, washing lines.
- Always burn dry, seasoned hardwood — green or wet wood produces excess smoke and tar build-up.
- Some councils restrict outdoor wood smoke. Check local restrictions before lighting if you're in a built-up area.

The cover stays off while the fire is running. Replace it during breaks or when the fire is fully out.

For ease, use a ash pan. Empty the ash pan after each session for frequent use, or weekly for occasional use.

Cooled ash is safe to compost or scatter as garden fertiliser — it's high in potassium and good for most non-acid-loving plants.

Periodically check the coil and chimney for tar or soot build-up. Both are signs of damp wood or unsuitable fuel — switch to dry, seasoned hardwood and the build-up disappears.

Roughly $0 in ongoing power (it doesn't use any) plus a few dollars per soak in firewood.

A typical session uses about a small armful of dry hardwood — under $10 from a hardware store, free if you have a wood pile. Compared to a powered spa (which can run $150–$300/month just to keep hot), the running cost difference is dramatic.

There's no chemical cost either — because the tub is drained and refilled each use, you're not maintaining sanitiser levels.

We offer a 30-Day Money-Back Guarantee.

If you don't love your hot tub, return it within 30 days of delivery — even if you've already used it — for a full refund of the purchase price. The only condition: you cover the cost of returning the tub to our nearest metro warehouse.

A note on the coil: the wood fire coil kit is sourced from a separate supplier (the tub itself is supplied by Tarter USA). The 30-day guarantee covers the full product including the coil. Beyond that 30-day window, we don't offer an extended warranty on the coil — that's an honest limit of working with two suppliers across two countries.

If your order arrives damaged, faulty, or not as described, that's separate — we'll repair, replace, or refund under your Australian Consumer Law rights regardless of timing. Email hello@terratanks.com.au and we'll sort it.

The exterior of the tub stays comfortable to touch during normal use. The water sits at bathing temperature (around 38–40°C), so the tub walls stay close to that — warm but not painful.

The fire box on the coil kit, by contrast, gets very hot — same as any fire pit or wood-burning appliance. Don't touch the coil housing or chimney while the fire is running or for at least 30 minutes after you've put it out. Treat it the way you'd treat any open fire in your backyard.

The hose through which the warm water enters the tank can also be quite hot so please avoid bathing near that area.

The tub edge can warm up if it's been sitting in direct summer sun for hours with the cover off. If that's a concern, throw a shade sail over it or just keep the cover on between soaks.

Yes. Drain it, disconnect the coil kit, and roll the empty tub to its new spot. The coil kit detaches from the tub via two pipe connections — you don't need to dismantle anything else.

Most customers find a permanent spot during their first season and don't move it again, but the tub is genuinely portable if you change your mind, move house, or want to reposition seasonally.

Included with every Off-Grid Wood Fired Hot Tub:
- 1.8m oval galvanised steel tub, pre-drilled for the coil kit
- Wood fire coil kit (the heating system — gravity-fed, no power)
- Wooden paddle (for circulating water during heat-up)
- Custom-fit UV-resistant cover
- Step-by-step setup guide
- Ongoing phone support

Sold separately (only if you need it):
- Custom Colour Coating — $550 (Raptor coating, exterior only)
- Replacement Wood Fire Coil Kit — $950 (only needed if your original coil is damaged)

Not compatible with this product:
- Premium Vinyl Pool Liner — built for round pool tanks only
- Inflatable Hard Shell Cover — sized for the round tanks
- Pump and filter system — not needed (the tub is drained and refilled each use)