Keeping your pool water clean and clear without heavy chemical use is easier when you have a quality ozone generator on your side.
Popular choices like the DEL Ozone EC-10 Eclipse-10 Pool Ozone Generator and the more powerful DEL Ozone EC-20 Eclipse-20 offer reliable oxygen-based sanitation, while options such as the SP-3G 3 g/hr Ozone Generator deliver strong performance for larger water volumes. Whether you’re maintaining a backyard pool, spa, or hot tub, the right ozone generator helps reduce chlorine demand, improve water clarity, and create a more pleasant swimming environment.
Table of Contents
Review of Best Pool Ozone Generators
1. DEL Ozone EC-10 Eclipse-10 Pool Ozone Generator
- Brand: DEL Ozone
- Manufacturer: Del Ozone
- Dimensions: Height: 14.1 Inches Width: 3.2 Inches Length: 7.8 Inches Weight: 8.4 Pounds `
Features
- Wall Mounted
- CD engineering eliminates need for air dryer
- Airflow management via Mazzei venturi injector
- Operates under vacuum for effectiveness and safety
- Mixing Degas Vessel available
2. Ultra Prue 1106523 UltraPure Spa Ozone Generator with AMP Cord
- Brand: Ultra Prue
- Manufacturer: UltraPure
- Dimensions: Height: 4.0 inches Width: 4.0 inches Length: 10.0 inches
Features
- UltraPure 1106523 EUV3 UV 115V/230V
- Spa Ozone Generator With Amp Cord
- Brand: Ultra Prue
- Item Package Weight: 2.5 Pounds
3. SP-3G, a 3 g/hr Swimming Pool Water Ozone Generator, Ozonizer, …
- Brand: A2Z Ozone
- Manufacturer: A2Z Ozone Inc
- Color: Blue
- Dimensions: Height: 15.0 Inches Width: 12.0 Inches Length: 18.0 Inches Weight: 14.0 Pounds `
Features
- Reduce chemical usage by up to 95%
- 3 G/H Adjustable Ozone Concentration
- Variable Ozone Output (10 – 100%).
- PTFE tube for O3 outlet.
- Air cooled Corona Discharge (low maintenance chlorine alternative)
- Requirements: External Air Pump (or Oxygen Generator) and a venturi injector.
- No more irritated, red eyes. No discoloration or dry brittle hair! No more smell of chlorine on your skin!
4. DEL Ozone EC-20 Eclipse-20 Pool Ozone Generator
- Brand: DEL Ozone
- Manufacturer: Del Ozone
- Dimensions: Height: 14.1 Inches Width: 3.2 Inches Length: 7.8 Inches Weight: 9.0 Pounds `
Features
- Wall Mounted
- CD engineering eliminates need for air dryer
- Airflow management via Mazzei venturi injector
- Operates under vacuum for effectiveness and safety
- Mixing Degas Vessel available
5. Clarathon HCD-55 Spa Ozonator Kit: Hi-Output Ozone Generator for Hot …
- Brand: Clarathon
- Manufacturer: Clarathon
Features
- Premium Ozone Generator for all hot tubs & swim spas up to 1500 gallons
- Latest CD Technology: High ozone output: 55 mg/hour
- Best replacement for all spa ozonator brands & OEM ozone generators
- Universal Voltage: autosensing 120V / 240V
- Kit includes: Ozonator, 6′ tubing, check valve, hose clamps, power cord & AMP-4 plug
6. Aquatic 2 Spa, Hot Tub Ozone Generator 300 mg/h, Spa …
- Brand: A2Z Ozone
- Manufacturer: A2Z Ozone Inc
- Color: Black
- Dimensions: Height: 4.0 Inches Width: 6.0 Inches Length: 11.0 Inches Weight: 1.25 Pounds `
Features
- Universal Plug Type: The Aquatic 2 Spa Ozone Generator can be wired for 110v or 220v. Set up instructions are included in the user manual.
- Venturi Injector: If you do not have the vacuum port in your spa provided by the spa manufacturer, then your Aquatic will need the correct size venturi injector to plumb into your spa.
- Quick Installation: The Aquatic 2 is pre-assembled and ready to install. User manual, check valve, 5 feet of tubing, four hose ties and two screws and plastic anchor for mounting, all included in the package.
- Don’t settle for irritants! Designed to sterilize and purify water and helps with skin irritants, etc. Get back to the fun without all the hassles and pains that come with Hot Tubs/Spas.
7. QiQibaby 300 Mg/h Aquatic 2 Mini Spa Ozone Generator Water …
- Brand: QiQibaby
- Manufacturer: QiQibaby
- Color: Black
Features
- Power Consumption: 6 W, Ozone generators are a common and effective way to oxidize airborne odors and remove contaminants from water. Ozone is 3,000 times more effective than bleach.
- Ozone Output: 300 mg/h, The Aquatic Ozone Generator produces 300 mg/hour of ozone gas. The output is standardized with 1 LPM oxygen flow rate. Because this unit is run by air, the actual ozone concentration is around 0.6 mg/L. Note, the Aquatic does not have an oxygen hookup.
- Power Connection Type: AMP plug, Universal Plug Type: The Aquatic Ozone Generator can be wired for 110v or 220v. Set up instructions are included in the user manual.
- Package Size: 10.2 × 5.1 × 3.7inch / 26 × 13 × 9.5cm, Portable for home pool spa
- Quick Installation: The Aquatic is pre-assembled and ready to install. User manual, check valve, 5 feet of soft black tubing, four hose ties and two screws and plastic anchor for mounting, all included in the package. Please remember to have your certified electrician install the unit.
8. Clarathon Hot Tub Spa Ozonator Check Valve for Ozone Generator
- Brand: Clarathon
- Manufacturer: Clarathon
Features
- One-way ozone gas check valve
- Prevents backflow water damage to ozonator
- Accepts standard 1/4″ tubing
- Use for hot tub, pool, pond applications
- Ozone-Resistant Polymer
9. 9-0770-01 Ozone Tube Assembly with Check Valve Fits for Big …
- Brand: usvehj
- Manufacturer: usvehj
- Dimensions: Height: 0.35 Inches Width: 0.35 Inches Length: 127.95 Inches
Features
- 【Specific Compatibility】9-0770-01 Check Valve and Tubing for the Following Del Ozone Systems: EC-10, EC-20, EC-30. For use with: Ozone 25/50/100.
- 【Strong Function】If you find that the ozone bubbles in the swimming pool have stopped flowing, it may be a problem with the ozone tube. Replacing the ozone tube can allow the ozone bubbles to flow again, thereby ensuring the cleanliness and safety of the swimming pool. This method solves the problem quickly and saves money.
- 【Superior Material】Made of exceptional performance and longer-life plastic & PVC material, with strong durability, corrosion resistance and anti-rust performance. High-quality materials allow it to be used for a long time.
- 【Package Includes】7-1140-07 Check Valve*1, 7-0594 Ozone Tubing*1, Hose Clamp*4.
- 【Satisfaction Guarantee】usvehj is committed to providing excellent products and best service for our customers. If you are not satisfied with the product, you can simply return it. We support a 30-day full refund for return and a 12-month warranty.
10. INTEX 26665EG QZ1100 Krystal Clear Saltwater System with Ozone for …
- Brand: Intex
- Manufacturer: Intex
- Color: white
- Dimensions: Height: 18.0 Inches Width: 18.0 Inches Length: 18.0 Inches Weight: 23.0 Pounds `
Features
- For above ground pools up to 15,000 gallons
- Improved system design
- No chemical smell, faded swimsuits, bed burning eyes, hair discoloration
- Requires filter pump flow rate of 1,600 – 4,000 gph (pump sold separately)
- Control panel with display and easy access buttons
- 110-120V with GFCI
- Also compatible with non-Intex filter pumps
Buying Guide: How to Choose the Best Pool Ozone Generator
1. Ozone Output Capacity
Ozone generators are rated by output in milligrams per hour (mg/h) or grams per hour (g/hr). Higher output suits larger pools or frequent use, while smaller outputs are fine for hot tubs or smaller pools.
2. Pool Size Compatibility
Match the generator’s ozone output with your pool’s size. A 3 g/hr unit like the SP-3G works well in medium-to-large systems, while smaller spa generators are ideal for hot tubs.
3. Durability & Water Resistance
Make sure the unit is designed for wet environments. Marine-grade coatings, sealed electronics, and splash-resistant housings extend life in humid pool areas.
4. Installation Ease
Look for kits with clear instructions and all necessary hardware. Pre-configured spa kits (like the Clarathon HCD-55) often make installation easier.
5. Check Valves & Accessories
Ozone systems often need reliable check valves and tube assemblies to prevent water backflow into the generator. Consider rainforest-rated tube kits and ozone check valves if not already included.
6. Integrated Systems
Some units (e.g., the INTEX Krystal Clear Saltwater System with Ozone) combine ozone generation with saltwater electrification, offering two-in-one sanitation for pool owners.
7. Energy Efficiency & Cost
Ozone systems vary in power draw. Consider energy usage if your pool runs the generator daily. More efficient units save on electricity over time.
8. Compatibility with Existing Systems
If you already have a chlorinator or salt system, pick an ozone generator that integrates cleanly without causing control conflicts.
Comparison Table
| Model | Output / Rating | Type | Best Feature | Best For |
|---|---|---|---|---|
| DEL Ozone EC-10 Eclipse-10 Pool Ozone Generator | — | Standalone Ozone Unit | Trusted brand, reliable performance | Small-medium pools |
| DEL Ozone EC-20 Eclipse-20 Pool Ozone Generator | — | Standalone Ozone Unit | Higher capacity than EC-10 | Larger pools |
| SP-3G 3 g/hr Marine Ozone Generator | 3 g/hr | Ozonizer | High output for size | Larger water systems |
| Ultra Pure 1106523 UltraPure Spa Ozone Generator | — | Spa Ozone | Comes with AMP cord | Hot tubs & spas |
| Clarathon HCD-55 Spa Ozonator Kit | — | Spa Kit | High-output spa sanitization | Hot tubs |
| Aquatic 2 Spa / Hot Tub Ozone Generator (300 mg/h) | 300 mg/h | Spa Ozone | Designed for hot tubs | Small water setups |
| QiQibaby 300 mg/h Mini Spa Ozone Generator | 300 mg/h | Small Ozonizer | Compact & easy install | Small spas |
| Clarathon Hot Tub Spa Ozonator Check Valve | N/A | Accessory | Helps prevent backflow | Spa ozone plumbing |
| 9-0770-01 Ozone Tube Assembly with Check Valve | N/A | Accessory | Ozone tube + check valve | Plumbed ozone systems |
| INTEX 26665EG QZ1100 Krystal Clear Saltwater System with Ozone | Integrated | Saltwater + Ozone | Dual system cleaning | Pools with salt system |
FAQ
What does an ozone generator do for a pool?
A pool ozone generator produces ozone gas that breaks down bacteria, organics, and contaminants in water, reducing reliance on chlorine and improving overall clarity.
How much ozone output do I need?
Smaller hot tubs usually do well with a few hundred mg/h units, while mid-to-large pools benefit from generators around 3 g/hr or more.
Can ozone replace chlorine?
Ozone greatly reduces the need for chlorine but usually works best in combination with small amounts of residual sanitizer to maintain safe water.
Is ozone safe for swimmers?
Yes — properly installed ozone generators treat water inside the filtration system. Ozone gas doesn’t linger in high concentrations in swimming water.
Do ozone systems require special plumbing?
Most systems use a check valve and tubing from the generator to the pool’s plumbing loop. Accessories like ozone tube assemblies and check valves help protect the unit from water backflow.
Final Words
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