Fengind HCD-55 Spa Ozone Generator 110V Plug — 55 mg/hr Output for Hot Tubs & Swim Spas, Includes Tubing Kit

The Fengind HCD-55 Spa Ozone Generator is a 110V ozonator that delivers up to 55 mg/hour of ozone to help maintain cleaner water in hot tubs and swim spas.

Designed as a straightforward retrofit or OEM-style replacement for many hot tub and swim spa systems, the HCD-55 combines compact construction with a high-zone output. It pairs with a venturi injector or an air pump to disperse ozone into circulating water, helping reduce reliance on traditional chemical sanitizers. The kit ships with the hoses, clamps, check valve, and a power cord with AMP-4 plug so you can install it quickly—just confirm the 110V rating and connector compatibility before purchase.

How does the HCD-55 install in my hot tub or swim spa?

Installation is intended to be user-friendly and mostly plug-and-play for compatible systems. The unit must be used alongside a venturi injector or air pump; it will not visibly produce bubbles by itself. Fit the included tubing and check valve between the ozone generator and your spa’s injection point, then connect the AMP-4 power cord to a matching socket.

• Includes 6-foot tube, check valve, and four hose clamps for secure connections.
• Requires venturi injector or air pump to disperse ozone effectively.
• Confirm your hot tub's AMP-4 connector and 110V rating before ordering.

What performance can I expect from 55 mg/hr ozone output?

The HCD-55 is engineered for mid- to large-size spa zones and cites treatment coverage up to 1,500 gallons. At 55 milligrams per hour it provides continuous ozone generation suitable for regular maintenance cycles, helping to minimize organic load and complement your sanitizer program.

• 55 mg/hour ozone output for consistent supplemental sanitation.
• Suitable for spa zones up to approximately 1,500 gallons when properly installed.
• Low-running cost due to efficient output and durable components.

What comes in the box and what materials are used?

The HCD-55 kit supplies everything needed for basic hookup: tubing, clamps, check valve, AMP-4 power cord and clear instructions. The generator itself uses a mix of plastics, rubber, steel and copper to balance corrosion resistance with longevity in wet environments.

• Packaged with installation instructions and a 6-foot ozone tubing hose.
• Includes a check valve to prevent backflow and four stainless clamps for secure fittings.
• Built with durable materials—plastic housing, rubber seals, metal and copper internals.

How is support handled if there’s a problem?

Fengind backs this model with a one-year service commitment. If you contact support within that period, the team aims to respond promptly and help resolve installation or performance issues.

• 1-year service warranty backed by customer support.
• Fengind promises quick email response to identify fit or connector questions.
• Replacement or troubleshooting guidance available if faults appear during warranty.

Who is this for: The Fengind HCD-55 suits owners of hot tubs and swim spas who need an efficient, mid-output ozone solution compatible with venturi-style injection systems. It’s ideal for installers and DIYers who can verify a 110V AMP-4 connection and want a drop-in ozone generator to reduce chemical demand and help maintain clearer water. If you’re unsure about connector type or system compatibility, contact Fengind support with your hot tub model before buying.