Cold Plunge Ozone Generator, No Venturi Needed

Most cold plunge ozone systems rely on a venturi injector, which needs the right plumbing size and enough pump pressure to pull ozone into the water line. If you run 1/2 inch plumbing, or you do not have a venturi at all, that approach does not work well.

The PC-300 solves it differently. A built-in air pump pushes ozone through an included air stone at the bottom of your tub. Ozone sanitizes the water as the bubbles rise, then dissipates at the surface. No venturi, no external air source, and no dependence on your circulation plumbing. It drops into almost any cold plunge, whatever your pump or pipe size.

Corona discharge produces 200 to 300 mg/hr of ozone, enough to keep a 150 to 200 gallon plunge clean while reducing how much chemical sanitizer you need. At 7 watts on a timer, it costs almost nothing to run.

Why it fits your setup:

• Built-in air pump, no venturi or external air source required
• Works with any plumbing, including 1/2 inch lines and low-flow setups
• 200 to 300 mg/hr ozone output via corona discharge
• Complete kit: air hose, one-way check valve, and air stone included
• Sized for cold plunges up to about 200 gallons
• Runs on 110 to 120V at just 7 watts, GFCI outlet and timer recommended

How It Works
The PC-300 uses corona discharge to generate ozone from ambient air. A built-in pump delivers it through a 1 meter hose to an air stone at the bottom of your tub. As the fine bubbles rise, ozone oxidizes contaminants in the water, then dissipates when it reaches the surface. Because the unit is self-contained, it works independently of your circulation pump and plumbing. Ozone leaves no residual in the water, so it reduces your chemical load without replacing filtration and regular water changes.

We strive to process and ship all orders received before 3PM CST the day the order was received. Orders received after 3PM CST will be shipped the next business day. You will receive an email notification with tracking information once your order has been shipped.

Check out our Shipping Policy for additional details.

We stand behind the quality and performance of every Plunge Crafters product. If for any reason you're not completely satisfied within 30 days of delivery, simply contact our support team to return the product in its original condition and packaging. We’ll issue a full refund—no questions asked.

How it works:

• Submit your return request within 30 calendar days of receiving your order.
• Return the unused product in its original packaging.
• Once received and inspected, your refund will be processed within 5–7 business days.