The Best Hot Tub Ozonator


The Best Hot Tub Ozonator

Choosing the perfect ozonator for your hot tub or spa can be quite a daunting task. In today’s market, there’s an overwhelming array of options, each claiming to be the best. To make an informed decision, it’s crucial to arm yourself with accurate and pertinent information concerning aspects such as quality, functionality, design, and cost.

When it comes to enhancing the water quality and safety of your hot tub, an ozonator plays a pivotal role. However, not all ozonators are created equal, and finding the one that perfectly suits your needs requires careful consideration. Let’s dive deeper into what you should be looking for in an ozonator to ensure you make the right choice for your cherished relaxation haven.

10 Best Hot Tub Ozonators

Features, benefits, price, service, warranty and reviews, all have a say when determining the right ozonator for your hot tub.

The detailed reviews of each of the selected best ozonators on this list focus on the potential benefits and drawbacks to help make purchase decisions a breeze.

Clarathong HCD-55 Spa Ozonator Kit


  • Hi-output ozone generator
  • Ideal for swim spas and hot tubs
  • Uses universal power source of 120/240 v
  • Package includes everything you would need to get started


  • Has some problems when it comes to reliability

It is one of the best ozone generators you can find on the market today and is recommended for a 1500 gallons hot tub. You can also use this model for swim spas, making it a versatile product.

One great feature is using the best CD technology that allows the maximum output of 55 mg/hr. You can use the unit as a replacement for hot tub Ozonator bands and even ozone generators.

The universal fitting lets you plug the unit in a 120 or 240 volts power source. The kit includes hose clamps, a power cord, a check valve, 6-foot tubing, and an AMP-4 plug.

UltraPure 1106523 EUV3 UV Spa Ozone Generator 


  • Connects to 115/230 v power source
  • The product lasts for years
  • Has a three-year warranty
  • An efficient product
  • A lightweight product


  • Can be complicated to connect

The product uses up to 60Hz and connects to a 115 or 230 volts power source. That means you get a universal model you can use in most parts of the world.

One great thing is the high level of output that remains constant for a long time. You can bet it outdo other ozone products on the market today.

Another notable thing is the ability to prevent interference from the spa pak. That means you can count on the performance and save energy when using this Ozonator.

You get a three warranty that covers parts, and you can get a replacement within that duration.

Del Ozone MCD-50U-13 MCD-50 Ozone Generator 


  • Comes with every accessory needed to install
  • Offers a reliable output for a long time
  • The model can last for over five years
  • For hot tubs of about 10,000 gallons


  • Slightly heavier than most Ozonator

Del Ozone is a model that uses 120 or 240 volts to operate, and you can connect it to universal power sources. The product comes with all the things you need to install it like a check valve, hose, installation hardware, and more.

Another marvelous thing is the reliability of the unit since it provides effective service for years. You can have the confidence that the Ozonator will remain in good condition for over 5-year.

It was designed to help save energy, and that means you have fewer bills to pay. One more incredible thing is the durability you get as you can have value for money.

The unit is recommended for all spas or hot tub owners and is perfect for a 10,000 gallons unit.

DEL Ozone Hot Tub and Spa Eclipse CD Ozone Generator – ECS-1RPAM2-U


  • Relatively easy to install
  • Equipped with auto voltage sensing
  • Highly effective killing up to 99.9% of microorganisms
  • Detailed and informative guides
  • 1-year warranty


  • Some reliability issues

This Del Ozone is designed to keep the water in your hot tub clean and fresh without the need for any chemicals or extensive maintenance. It is a powerful oxidizing disinfectant that is extremely effective at eliminating microorganisms keeping water hygienic and clear.

Comes with all the necessary mounting hardware with detailed instructions that make it relatively easy to install. The Del Ozone is a well-priced ozonator that is ideal for hot tubs up to 750 gallons.

Universal Spa/Hot Tub Ozone Generator


  • Compact design
  • Easy to install
  • 2-year warranty
  • Increased ozone output
  • Great value for price


  • Only effective for hot tubs up to 500 gallons

The ideal choice for small to medium size hot tubs the Smart Spa is both functional and effective. The compact design allows it to be fitted almost anywhere and the powerful ozone output helps in keeping spa water sparkling clean.

Great value for the price! This ozonator with its 2 year warranty and easy installation definitely deserves to be in the top 10 on this list.

DEL Ozone DEL MCD-50 Spa Ozonator Universal


  • Ideal for large hot tubs up to 1000 gallons
  • Easy replacement of ozonating chip
  • High output corona discharge
  • Comes with all necessary components for easy installation
  • Designed to be mounted on interior wall


  • A tad on the expensive side

The ideal ozonator for a large size hot tub, the DEL MCD-50 is a powerful and functional ozone generator that keeps large volumes of spa water refreshingly clean. The ability to replace ozonating chip is also a highly beneficial feature that adds to the product’s longevity and cost effectiveness.

The DEL MCD-50 also comes with a detailed installation manual along with a water chemistry guide that makes installation and upkeep a breeze.

Prozone Water Products PZ1 110v Ozone System Generator for Spas


  • 2-year warranty
  • Fast shipping
  • Durable extruded aluminium construction
  • Comes with complete installation kit
  • High quality ozonator for portable spas up to 800 gallons
  • Compatible with all major spa brands
  • Patented ozone discharge delivery system


  • The most expensive ozonator on this list
  • Requires venturi system to operate

A highly durable and robust ozonator designed to last and keep spa water sparkling clean. The Prozone PZ1 is made for larger hot tubs and has an effective and efficient water quality management system thanks to patented innovative technology.

Its size and construction are intended for durability and minimal maintenance so that one is able to enjoy more time relaxing and less time worrying about water quality and hygiene.

A2Z Ozone Aquatic 2 Spa Ozone Generator



  • High ozone concentration and discharge
  • Small and compact design
  • Extremely cost-effective
  • Easy installation
  • Universal plug type
  • Comes with complete installation kit


  • Only suitable for hot tubs up to 500 gallons
  • Some issues in terms of reliability

If you need an ozonator that is small, powerful and affordable than the A2Z Ozone Aquatic might very well be the one to consider. This small yet powerful ozonator is great for small to medium size hot tubs and has a powerful ozone generator to keep spa water sanitized.

The A2Z Ozone Aquatic might not be the most durable ozonator available on the market but it more than makes up for this slight quality issue by being considerably cheaper than the rest of the competition.

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


  • Well-reputed manufacturer
  • Easy to install – Simply plug and play
  • Effectively eliminates microorganisms
  • Robust plastic exterior
  • Comes with mounting equipment


  • Doesn’t come with auto voltage sensing

Another excellent alternative for ozone based cleaning the QCA Spas Del Ozone is a sturdy ozonator that eliminates microorganisms naturally eliminating the need for chlorine and other oxidants.

It is extremely easy to install and its corrosion resistant plastic exterior helps protect the metal components inside resulting in long lasting water sanitation. Competitively priced and durable the QCA Spas in a good median of both quality and value.

Prozone Water Products PZ6-C 110v Ozone Generator for Spas & Jetted Tub


  • Excellent customer support and fast shipping
  • 2-year warranty
  • Extremely durable construction
  • Comes with complete installation kit
  • Patented hybrid technology
  • Universal design compatible with all major spa brands


  • Slightly more expensive than competitors

This ozonator is highly recommended for its durability and innovative technology that allows it to not only last longer but also consume less power. This makes it both highly effective and efficient.

When it comes to functionality and practicality the Prozone is no slouch either. It is Compatible with all major spa brands and comes with a 2-year warranty which makes it worth its slightly higher cost.

Ozonator Types

Different ozonator models cater to different customer demands. Here we look at the two types of ozonators and how each one can be suitable for different customer needs.

Corona Discharge (CD) or Ultra Violet (UV)

When it comes to ozonators you can have one that utilizes corona discharge, ultra violet or a combination of both. In recent time CD ozonators have gained a lot more in popularity as they are much more efficient in terms of power utilization while also being fast acting.

Even though UV light is an excellent natural way of keeping spa water clean the CD model has just become that much more cost-effective making it the more popular ozonator type as seen by the list of the best 7 hot tub ozonators.

In certain instances like the Prozone a combination of CD and UV is used to take water clarity and cleanliness levels to new heights. However, this does make such an ozonator quite a bit more expensive than other much cheaper options that still do a more than decent job.

Things to Consider Before Purchase

Choosing the right ozonator for your hot tub or spa is easier said than done. There are many specific details, features and benefits of each ozonator that need to be fully considered before making a purchase decision.

Size of Hot Tub or Spa

The most important thing is knowing the water capacity of your hot tub or spa so that you are able to better decipher what ozonator would work most effectively in that water volume. For example if you have a hot tub with an under 500 gallon capacity than you may not need a very expensive ozonator,

Type of Ozonator Preferred

Even though corona discharge (CD) is the most popular type of ozone generator available some customer prefer the UV based models or a combination of the two for much higher standards of clarity and hygiene.

Material Used

The type of material used on the exterior and interior of an ozonator can greatly impact its durability and reliability. Ideal materials for ozonators are durable high grade plastic or aluminium to protect against corrosion and other contaminants.


It is often a good idea to look up the material used in the products construction to decipher its strength and long-term longevity. The sturdier and tougher the material looks and feels the greater are the chances of it lasting longer.

Safety Functions

Most ozonators operate only during select cycles in order to regulate power and be more effective. Looking for ozonators with safety features to help protect against voltage fluctuations and electrical hazards can be greatly advantageous.


The east of installation is a major factor to consider when deciding what ozonator to purchase. Purchasing an ozonator that is universal and compatible with all major spa brands is one thing but installing it is another challenge altogether.

When purchasing ensure that the product comes with a detailed instruction manual and a water chemistry guide to help assist in both the setup and the ongoing maintenance of the product.

Installing an ozonator should not require professionals as long as one follows the instruction manual. Upon receiving the product it is highly recommended to check immediately if all installation components are their as anything missing would be quite apparent.


What type of warranty is being offered by the manufacturer and on what terms?


Ozonators do not require maintenance as such except perhaps the replacement of the CD chip once its ozonation has deteriorated. Even the best CD chips only last about 2-3 years at best and require replacing in order for the ozone generator to work effectively.

The Best Ozonators for Hot Tubs

A systematic review of the seven best ozonators available in the market leaves no clear winner as each one selected has its own unique benefits and cons. The ideal ozonator for a hot tub depends on customer priorities or limitations in terms of price, durability and functionality.

Every ozonator reviewed on this list has its own pros and cons. Some are more efficient than others while some are much more durable and practical. Selecting the ideal one depends on knowing exactly what you want and then comparing those products that fit those requirements for price and quality.

All the ozonators reviewed in this guide have excellent warranty terms and come from reputable suppliers. They are made from some of the best quality materials and are from highly reputable brands that have been manufacturing for many decades.

Wise Reviewer

Post Comment