Wood Fired Coil Kit
Wood Fired Coil Kit
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Wood Fired Hot Tub Coil Kit
The Coil Kit converts your own tub into a wood fired hot tub. Everything is included for quick and easy DIY installation; all you need is a power drill and the tub.

Powerful Heating Performance
The Coil Kit is powerful and efficient for quick heating times.
Average Heating Time to 40C (104F):
500L Uninsulated tub - 1.5 hours
800L Uninsulated tub - 2 hours
1,000L Insulated tub - 1.5 hours
1,500L Insulated tub - 2.5 hours
2,000L Insulated tub - 3 hours

No Electricity Needed! But How?
Our system runs on a natural flow called thermosyphon — no pump, no wires.
As fire heats the water inside the coil, hot water rises out the top and flows back into the tub.
At the same time, cold water from the bottom of the tub gets pulled into the coil to be heated.
This creates a steady, silent cycle powered only by fire and gravity.

Quick and Easy Installation
Installation takes about 20 minutes. It's a quick and easy DIY project; the only tool needed is a power drill. Just drill two holes, mount the wall ports, and hook up the hoses. Now you're ready to soak.
BBQ Grill Functionality
Place a grill, hot plate, or large wok over the coil to enjoy flame grilled food while the tub heats up.
What's Included

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After many years of procrastination I finally took the plunge and purchased a wood fired bath heater coil system. Purchase and delivery was quick, even with a few questions back and forth.
It arrived in one big box complete with instructions, I found the YouTube version much easier to understand. I had decided to install it on a big fibreglass bath I already had and only needed to purchase a bigger hole than I already had. The fibreglass bath has slanted walls so hole placement was critical as the bottom pipe was angled towards the ground.
Once all fitted up I filled the tub, water from the tank was 8c so took awhile to heat to high 20’s but to mid 40’s was much quicker, so be careful as mine ended up at 48 and I had to cool it down.
Second time using it was much easier as I cut shorter wood for the coil and monitored the temp more closely, not adding any more wood after water reached the mid 20’s.
The result, a beautiful hot bath under the stars, multiple times now.
Bought this for a birthday gift for my wife. She loves it! Easy setup.
We purchased a coil kit for a cast iron outdoor bath. I can’t tell you how pleased we were with the customer service from Mateo in Victoria. He was extremely helpful in answering question re the set up. He made himself available. The coil works perfectly, the bath in our case takes 30-40 minutes to heat up. There is really something special about sitting in a body of water that progressively heats up. It is relaxation another level.
As a U.S. customer, I was surprised to receive email during shipping from UPS charging import and brokerage fees: $79 if paid while in transit, $91 if paid on delivery. I understand this is due to U.S. trade policy but would prefer to have known in advance.
Nonetheless, I look forward to setting up the tub and easing my way past the unwelcome surprise!