14 best hot tub ozone generators

Hot tub ozone generators are devices used to sanitize and clean the water in hot tubs and spas. They are an alternative to traditional chlorine or bromine-based sanitizing methods. Ozone generators work by producing ozone, a powerful oxidizing agent, which effectively kills bacteria, viruses, and other microorganisms in the water. Here are key points about hot tub ozone generators and their related aspects:

How Hot Tub Ozone Generators Work:

  1. Ozone Production: Ozone generators produce ozone (O3) by passing oxygen molecules (O2) through an electrical discharge field or ultraviolet light. Ozone is highly reactive and acts as a potent disinfectant.

  2. Sanitizing Effect: Ozone destroys harmful microorganisms by disrupting their cell walls and oxidizing their cellular components. It also breaks down organic contaminants in the water.

  3. Chlorine Alternatives: Ozone generators provide an alternative to traditional chlorine or bromine sanitizing methods. While some residual sanitizer might still be necessary, the reliance on chemicals is significantly reduced.

Benefits and Considerations:

  1. Reduced Chemical Usage: Ozone generators reduce the need for large amounts of chlorine or bromine, leading to reduced chemical usage. This can result in a gentler and more pleasant bathing experience.

  2. Odor and Irritation Reduction: Ozone helps eliminate the chloramine compounds that cause strong chemical odors and skin/eye irritations in hot tubs. This leads to a more enjoyable and comfortable environment.

  3. Environmental Impact: Ozone breaks down into oxygen, leaving no harmful by-products. This makes it an environmentally friendly sanitizing option.

  4. Regular Maintenance: Ozone generators require regular maintenance to ensure their effectiveness. Ozone systems typically have a lifespan, and the generator cells might need replacement after a certain period.

Installation and Usage:

  1. Professional Installation: Ozone generators are often installed by professionals to ensure they are integrated correctly with the hot tub's filtration system.

  2. Proper Sizing: The size of the ozone generator should be appropriate for the volume of the hot tub to ensure effective sanitization.

  3. Ongoing Monitoring: Even with ozone generators, it's important to regularly monitor the hot tub's water chemistry to ensure proper sanitation and balance.

Hot tub ozone generators offer an effective and efficient way to maintain clean and sanitized water in hot tubs and spas. They provide a viable alternative for individuals looking to minimize their use of traditional sanitizing chemicals. Regular maintenance and appropriate usage are key to ensuring their optimal performance.

Below you can find our editor's choice of the best hot tub ozone generators on the market
  

Hot Spring Watkins Replacement Spas Freshwater III Ozone System Complete, 72602

Hot Spring

Based on 53 reviews Check latest price

Product description

What's included: Newly designed and more compact Freshwater 3 High Output Ozone System w/ Direct Connect Power Cord, Injector, Ozone Resistant Tubing & Check Valve. Description: Newly designed FreshWater III CD Ozonator effortlessly replaces the older FreshWater II High Output ozonator taking up half the space while packing twice the punch. Never had an ozonator you say? This will be the last ozonator you'll ever need. Our Freshwater III CD Ozonator produces ozone differently than the typical ultraviolet style ozonators found today. Our corona discharge method of ozone generation will crank out a higher concentration (PPM) of ozone and that concentration level won't decrease over the years like the ultraviolet style ozonators. Easy to install, the new Freshwater III CD Ozonator's bubbles will give your spa water that "rain fresh" fragrance. Installs in all 1995-forward Hot Spring, Tiger River and Limelight spa models. Installation time is about 45 minutes. Power Consumption: 8 watts, .21AMP. Note: If you have a pre 1997 Hot Spring or Tiger River, the ozonators were most often hard wired into the circulating pumps power cord. Note#2: For just the ozone unit without the injector, tubing and check valve see item# 73831. old ref 35078

  • Item 72602
  • What's included: Newly designed and more compact Freshwater 3 High Output Ozone System w/ Direct Connect Power Cord, Injector, Ozone Resistant Tubing & Check Valve.
  • Installs in all 1995-forward Hot Spring, Tiger River and Limelight spa models
  • Installation time is about 45 minutes. Power Consumption: 8 watts, .21AMP.
  • Our Freshwater III CD Ozonator produces ozone differently than the typical ultraviolet style ozonators found today. Our corona discharge method of ozone generation will crank out a higher concentration (PPM) of ozone and that concentration level won't decrease over the years like the ultraviolet style ozonators. Easy to install, the new Freshwater III CD Ozonator's bubbles will give your spa water that "rain fresh" fragrance.

User questions & answers

Question: Will this work in a hot springs jetsetter
Answer: No. It is meant to be plugged into the hot tub circuit board so it cycles on and off with the pump.
Question: I have a 1993 prodigy will it work
Answer: Not sure what you are after. The ozinator is 110:/220 compatible. Should hook directly to your spa main board.
Question: How long will it last? Are these used to replace adding all chlorine and other chemicals
Answer: Don't know Not over kill
Question: What is the life time expectancy of this unit? (if tub is used almost daily by one person
Answer: Not familiar with your specific spa but this ozonator is 120/220 compatible. It has 3 wires, black (hot), white (neutral), and green (ground). The discharge tubing is adequately long, and it comes with the check valve. Go for it. Mount it high and be sure to loop the tubing. Works Fine as a replacement on my Tiger Rivet Spa.

Clarathon HCD-55 Spa Ozonator Kit: Hi-Output Ozone Generator for Hot Tubs & Swim Spas - Universal: 120V / 240V

Based on 20 reviews Check latest price

Product description

Clarathon HCD-55 High Output Hot Tub Ozonator Kit sets the standard for ozone generators. Latest CD technology for years of trouble-free service life. For spas & swim spas up to 1500 gallons. Universal Voltage: 120V/240V. Includes 6 ft. Tubing, Check Valve, Hose Clamps, power cord with AMP-4 prong connector, and complete installation instructions. 55mg/hr ozone. 100-240VAC autosensing. UL listed. 1yr. factory warranty.

  • 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

User questions & answers

Question: Can this Ozonator be easily plugged into a house type 120vac plug socket? w ground protection
Answer: To my understanding there is nothing that states that. How would it matter if ear buds were energy star certified? They are great earbuds. I really like the marshmallow buds very comfortable.
Question: Can it be wired to a 110v power with a 12v inverter
Answer: No. They are just basic earbuds with no mic, or song selector.
Question: What is the estimated lifespan for this ozonator? Is it overkill for a 350 gallon hot tub
Answer: yes, it comes w three sizes: small medium and large
Question: Can this be used with a intex 28481e simple spa 77in x 26in 4-person outdoor portable inflatable round heated hot tub spa with 100 bubble jets, filter
Answer: No, I've never had a pair of these with a volume slider

Puri Tech Universal Spa and Hot Tub Ozone Generator

Based on 1 reviews Check latest price
  • Spa & hot tub replacement Corona discharge (CD) ozone.
  • Dual voltage can be used as 110V or 230V. Electric: 85-250 vac, 50/60Hz.
  • Amp plug.

Product features

How to tell if it’s time to replace your ozone generator

Figuring out for yourself If your ozonator needs replacement is not as simple as you might expect. Some people will tell you to look for an “on” light or “check for bubbles” &, for sure, these checks may help you determine if the ozonator is on, but it doesn't necessarily tell you if the ozone generator is producing ozone.

A spa ozone generator may keep running long after it expires (stops producing adequate ozone) so you will need to look at other factors besides just power to the ozonator.

Universal Spa/Hot Tub Ozone Generator

Smart Spa Supply

Based on 78 reviews Check latest price

Product description

Spa & hot tub replacement Corona discharge (CD) ozone. Dual voltage can be used as 110V or 230V. Electric: 85-250 vac, 50/60Hz. Amp plug. 6W ozone output. How to tell if it’s time to replace your ozone generator: figuring out for yourself If your ozonator needs replacement is not as simple as you might expect. Some people will tell you to look for an “on” light or “check for bubbles” &, for sure, These checks may help you determine if the ozonator is on, but it doesn't necessarily tell you if the ozone generator is producing ozone. A spa ozone generator may keep running long after it expires (stops producing adequate ozone) so you will need to look at other factors besides just power to the ozonator. Ask yourself: does your water look & feel like new? With a working ozonator & the proper chemical Balance, It should. Do you find yourself continually upping the amount of chemicals you use in an attempt to fix your water quality? This is typical of spas that need an ozone generator replacement. Are you having trouble balancing your water chemistry? Adding chemicals may just add to the problem. Check your ozonator. Have you replaced your spa ozonator in the past 3 years? If not, It’s likely your ozonator is expired. Ozone generators typically last 3 years. Now what? The smart spa CD oozonator is perfect for the do-it-your selfer & Super easy to install.

  • Dual voltage can be used as 110V or 230V.
  • Corona discharge
  • Amp plug.

User questions & answers

Question: Does It work for a Jacuzzi hot tub
Answer: You can get the 30 second ozone test kit from UltraPure, but if the light is not on, it’s probably not working. When my Ozone generators go bad, I find it difficult to maintain clear water.
Question: Hello. What is the ozone concentration in mg/hr
Answer: Hello...great question! Most of the time, you will need to purchase an injector (venturi) separately. They are NOT included because they are rarely purchased for aftermarket ozone installations (ozone usually comes with the tub, and so does the injector). The white Mazzei Injector is the most common, DEL part number 9-0472. They run less than $40. Hope that helps! Good luck with the install. Jen, love your hot tub dot com
Question: Would this ozone generator be effective for an outdoor backyard pond with only plants and no fish
Answer: Hello, the unit is actually 4.9"W x 3.4"H x 2.3"D. That is the smallest unit out there (that I know of). And I haven't had anyone tell me it does not fit...hopefully you have 4.9"W space, not just 4". Jen
Question: How do you get parts for this, mine quit after warenty(2 1/2 years
Answer: Old question, but still applicable, so I will jump in and say the "most current model" you refer to is the older style with a CD Ozone Chip inside, which was replaceable. The NEW NEW style has a "U" in the part number which stands for Universal Voltage and Hertz. You no longer need to know if you have 120V, 240V, 50Hz or 60Hz which is awesome on many levels. The Universal models are called Spa Eclipse NEXT GENERATION and they do not have a replaceable CD Ozone Chip inside. Rather, they have the most modern ozone technology by DEL Ozone called APG Ozone Technology. Unfortunately, in this U model, the APG Ozone Module is NOT REPLACEABLE. Great question. Thank you, Jen.

QCA Spas Del Ozone APG-U-01 Ozonator Hot Tub Ozone Generator, 8 by 8-Inch, Cream

Based on 42 reviews Check latest price

Product description

This Ozonator Ozone Generator works with your filter to help maintain sparkling clean hot tub water. The ozone generator sanitizes the water naturally to reduce the need for chlorine and other chemicals.

  • Sanitizes hot tub water
  • Drastically reduces usage of chlorine and other oxidizers in hot tub water
  • Protects metal equipment from corrosion, extending the life of equipment and saving on costly repairs
  • Easy to install into a hot tub with a dedicated ozone air tube, jet and Balboa control pack (not included)

User questions & answers

Question: What is the warranty? What is the life expectancy? If mounted inside a hot tub, will the humidity diminish its expected life
Answer: It comes with cord a hose and check value uses 110 Or 220
Question: How do i wire this? the new apg-u has 2 wires, white and black. old apg-u had 3 wires , red, blue & green. all plug into a wire little cable harness
Answer: Mine did not come with a plug
Question: is these ventury system
Answer: I just replaced the core of this a week ago. It was functional for about 3 years. The advantage of this unit is the chip that produces ozone can be replaced vs the entire unit, and was very easy. I believe the replacement was around $75 and should go another 3 yrs.
Question: Does this come with anything other than the unit? hosing, valve, etc
Answer: These answers are all wrong. Bubbles tell you nothing about the status of your Ozone generator. There is no pump in these ozone generators. The injector or ozone port in the tub creates a slight vacuum that draws the ozone out of the unit. Even if you disconnect your ozone generator altogether you will still have bubbles...but they will be 100% air bubbles. If the light is on, the only real way to know is to do an ozone test or, simply use your nose. Often you can smell the ozone gas.

DEL Ozone MCD-50U-12 Hot Tub and Spa Ozonator for Water Sanitation

DEL Ozone

Based on 49 reviews Check latest price

Product description

The DEL Ozone MCD-50 Ozonator is a high output system designed to sanitize hot tubs up to 1,000 gallons. A premium ozonator, the MCD-50 uses Corona Discharge ozone for eco-friendly spa sanitization, built to dramatically reduce chemical use. Made with a ceramic exterior for improved corrosion resistance and durability, the MCD-50 mounts to the interior wall of portable spas and hot tubs and includes a handy LED indicator for ozone generator operation. This model is a 115/220V and has a 50 mg per

  • Keeps the water in your spa fresh and clean using the high output sanitizing system
  • Will save you money on chemicals, eliminate odors, and features easy installation
  • Mounts to the interior wall of your spa
  • Comes complete with Ozone generator, Ozone supply tubing, check valve, mounting screws, installation manual, and a water chemistry guide
  • For spas up to 1,000 gallons

User questions & answers

Question: does it come with a cord and an AMP or do I need to use the old cord
Answer: It has a small window on the side of the case where you can see if the uv light is on. Very obvious. Mine works great. Made a huge difference in spa water quality.
Question: Does this come with amp plug bc reviews said it did not
Answer: For most applications this unit would be powered by your spa pack. Therefore, your spa pack would control when the lamp is operating. Some spa packs would run the lamp continuously while others may allow you to run the lamp only when a pump is operating. Refer to the spa pack manual to review your options. Lastly, a word of caution. Spa packs usually operate at 230V or 115V so opening one is very dangerous. If you are not qualified, get an electrician or spa technician to do this for you.
Question: What is the expected life of this unit
Answer: 9" long x 4" tall x 3" wide. This is a small unit suitable for a spa.
Question: how do ypu know it is working
Answer: Not sure where you can find spec but I am happy with my purchase. This is a nice little until. RB

Del Ozone MCD-50U-13 MCD-50 High Output CD Spa Ozone Generator

DEL Ozone

Based on 20 reviews Check latest price

Product description

Swimming pools can be the focal point of some serious fun. We provide a wide selection of pool supplies and spa products means less time and effort maintaining and more time enjoying the good life. Buy our products and let the fun begin. Features-Spa Mini JJ Cord CD High Output Ozonator-Specifications-Voltage: 120-240V-

  • Del Industries Ozonator
  • Dimension: 8.6 Inch Height x 6.1 Inch Width x 2.8 Inch Depth
  • Frequency Rating: 60 Hz
  • Includes: J&J Mini Plug
  • Voltage Rating: 120/240 V

User questions & answers

Question: Does it hotwire or does it have a plug
Answer: I’ve had two go bad apparently by over heating. Now I am trying to extend inlet outside of tub by adding a tube where filter is. The company’s customer service is helpful..
Question: Does this come with tubing and check valve
Answer: Put the Black wire where the brown one is, and the White wire where the Blue one is. The new ozone does not need a ground wire
Question: Does it have a internal air pump
Answer: Yes
Question: Can you provide a picture of the included spa mini jj cord
Answer: Yes. It has everything you need to install it. It took me 5 minutes to take off the side of my hot tub and about 2 minutes to put the new unit in. The existing valve and tubing in mine looked to be in good shape so I didn't bother changing it out. If you do, that looks simple as well.

UltraPure 1106523 EUV3 UV 115V/230V Spa Ozone Generator With AMP Cord

Based on 28 reviews Check latest price

User questions & answers

Question: How do I know if this will work on my spa
Answer: yes it does. I have a Jacuzzi and it hooked up to the injector line just like the old one just make sure it is configured to the same voltage. either 110v or 220v.
Question: Is there a timer available to limit the amount of daily run time, since it will be wired inside the spa, fed by a single GFI plug
Answer: It has a minimum of 300 mg/h of ozone concentration release for high-quality water cleaning using the high powered latest technology in ozone release.
Question: I see the package dimensions, which incidently is pretty much useless information. What are the actual dimensions of the unit? Thanks in advance
Answer: I dought if it will work !! Suggest you get one designed for ponds !!
Question: I do not find data, or any manuf site, only retailers copying same description. Where can I find data and specs to make buy decision
Answer: I'm wondering the same thing! Mine quit in only a few months!

Aquatic 2 Spa Ozone Generator

Based on 86 reviews Check latest price

Product description

The Aquatic 2 Spa Ozone Generator is designed to decrease reliance on harmful chemicals in spas up to 132 gallons or 500 liters. The Aquatic 2 is maintenance free and helps maintain crystal clear water in your hot tub without the need for additional skin irritating chemicals. The unit produces 300 mg/hour of ozone gas that is introduced to the spa water through suction created by the spa injector, creating a vacuum like suction that pulls the ozone out of the unit and into your spa’s water.

  • 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.

User questions & answers

Question: Could I use it for my small above ground pool? Thx
Answer: 1400-1600 gallons
Question: When I first hooked up the unit the red light was on. Now the light is off while the pump is running and the unit does have power. Whats wrong here
Answer: I think it would clog up too fast. The outer layer is very fine.
Question: I have a weslo 410 daybreak. Will I be able to hook up the ozone generator to it
Answer: I believe it would remove Charlene as it seems to be a solids filter. I don’t think it would remove Chlorine from tap water. It appears to be a sediment filter.
Question: Does the unit come with an amp plug attached
Answer: The contents are in a liquid gel like substance. Not Powder.

Product features

A2Z Ozone Aquatic 2 Spa Ozonator

The Aquatic 2 Spa Ozone Generator is designed to decrease reliance on harmful chemicals in spas up to 132 gallons or 500 liters. The Aquatic 2 is maintenance free and helps maintain crystal clear water in your hot tub without the need for additional skin irritating chemicals. The unit produces 300 mg/hour of ozone gas that is introduced to the spa water through suction created by the spa injector, creating a vacuum like suction that pulls the ozone out of the unit and into your spa’s water.

Reduce Reliance on Harmful Chemicals

Ozone is becoming a very popular method of sanitation for many spa and pool owners. The high expense of harsh and heavy chemicals combined with the irritating effects of itchy, red eyes and skin makes ozone a natural solution to the problem of effective pool sanitation. Ozone can reduce your chemical reliance up to 90%.

The main objective is clear- reduce your reliance on chemicals and choose ozone for a pure, rejuvenating swimming experience!

BESTYIBO 110V Ozone Generator Kit Spa Hot Tub Pool Ozone Generator Complete Replacement Kit Amp Connector Check Valve PVC Tube

Based on 1 reviews Check latest price

Product description

Specifications:

Material: Plastic

Color: Black

Voltage: 110v

Power: ≤10 watts

Ozone Cartridge Output: 50-300 mg/hr



Package included:

1 X Ozone Generator

1 X 1m PVC Tube

1 X Check Valve

1 X Amp Connector

 

Note: This product does not have a built-in air pump, you need to equip it with a jet (Venturi tube).

  • Plastic
  • ★Material: Plastic
  • ★Specification: Voltage: 110v, Power: ≤10 watts.
  • ★Ozone Cartridge Output: 50-300 mg/hr
  • ★Note: This product does not have a built-in air pump, you need to equip it with a jet (Venturi tube).
  • ★Package included: 1 X Ozone Generator, 1 X 1m PVC Tube, 1 X Check Valve, 1 X Amp Connector

mansum Ac 220V Hot Tub Spa Ozone Generator Balboa Complete Replacement Kit with Valve and Hose Module - 16A,220V

Product description

Material: Plastic

Color: Black

Voltage: 110v / 220v

Power: =10 watts

Ozone Cartridge Output: 50-300 mg/hr

  • Material: Plastic
  • Color: Black
  • Voltage: 110v / 220v
  • Power: =10 watts
  • Ozone Cartridge Output: 50-300 mg/hr

Clarathon Hot Tub Spa Ozonator Check Valve for Ozone Generator

Based on 1 reviews Check latest price

Product description

Clarathon Ozone Check Valve eliminates ozonator electrical damage by preventing spa water back-flow. Add a Turbo Mixer to water line for optimal dissolving of ozone.Ozone Check Valve eliminates ozonator electrical damage by preventing spa water back-flow. Product notes: Orient flat side for flow direction as illustrated. You can confirm flow direction by blowing into it. If installed backwards, no ozone gas will flow, and water may back into ozone generator.

  • One-way ozone gas check valve
  • Prevents backflow water damage to ozonator
  • Accepts standard 1/4" tubing
  • Use for hot tub, pool, pond applications
  • Chemically-Resistant Polymer

Hot Tub Replacement Ozone Generator 240 Volt Compatible with Most Jacuzzi Spa JAC6473-150/6473-150

Product description

Jacuzzi Spa Replacement Ozone Generator 240 Volt JAC6473-150 / 6473-150 Jacuzzi Spa Replacment Ozone Generator, 240 Volt, 2005 Jacuzzi. Replaces Part Number JAC6473-124A. Also Fits Older Models (2002+) And Requires Adapter: 6000-953, See Related Products Below You Will Receive One Item High Quality that's made to last!!

  • High Quality thats made to last!!

Ozone Generator Ozonator Hot Tub Spa Pool Ozone Generator Spa Ozonator Complete Ozonator Kit + Check Valve 300mg/hr 110V (US Stock)

Based on 1 reviews Check latest price

Product description

Note: This product does not have a built-in air pump, you need to equip it with a jet (Venturi tube).



Specifications:

Material: Plastic

Color: Black

Voltage: 110v

Power: ≤10 watts

Ozone Cartridge Output: 50-300 mg/h



Package included:

1 X Ozone Generator

1 X 1m PVC Tube

1 X Check Valve

1 X Amp Connector

  • ★【STABLE】Stable air output from air pump, high ozone generation efficiency.
  • ★【EFFECTIVE OZONE MACHINE】Ozone Generators for cleaning purpose for Bathtub/Plunge Pool/Shower.
  • ★【OZONE OUTPUT】Outstanding output of Ozone gas.The machinery will do a whole house (good amount of o3 output) if you move it room to room . This Ozone Generator has a 50-300 mg/hr of output
  • ★【EASY TO CARRY】The product is small, easy to carry, easy to operate.
  • ★【NOTICE】This product does not have a built-in air pump, you need to equip it with a jet (Venturi tube).

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