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BoiE Ozone Generators, Hydroxyl Generators & Training
  • HYDRA ULTRA with 3 AOP Modes
  • Powerful, Germicidal UV Light
  • Airline Carry-on Luggage Compliant
HYDRA ULTRA Hydroxyl Generator 7-Optic
Dual PCO and AOP Technology with Air Scrubber

$3,995 Buy

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Great for Mold Remediation and Water/Fire Restoration Companies
Hydroxyl Generator with Advanced Oxidation Processes, Treats Up To 6,000 sq ft

BoiE Hydra Hydroxyl GeneratorsThe BoiE HYDRA ULTRA is the ultimate, multipurpose hydroxyl generator for challenging restoration projects including mold and sewage remediation, water and fire damage restoration, and dust and odor control. The BoiE HYDRA ULTRA will break apart odors from fire and smoke, category 2 & 3 water losses, chemical fumes, fuel oil and VOCs.

Designed for restoration service companies, the HYDRA ULTRA's combination of features make it unlike any other hydroxyl generator on the market today. The unit combines the benefits of a portable HEPA air scrubber, a negative air machine and a versatile hydroxyl generator with four modes of operation, making the HYDRA ULTRA a unique solution for indoor air purification or mold remediation projects.

The HYDRA ULTRA can be used in PhotoCatalytic Oxidation (PCO) mode with occupants present, or in Advanced Oxidation Process (AOP) modes with monitoring and appropriate PPE when workers are present.* Both types of operation are safe for plants and sensitive materials.

How It Works:
Hydroxyls are highly-reactive (radical) molecules formed naturally when UV light from the sun splits apart water molecules in the air. The resulting hydroxyl radicals instantly oxidize pollutants nearby. Hydroxyls are nature's primary method of cleaning contaminants from the atmosphere using only sunlight and water vapor. Artificially-generated hydroxyls perform the same cleansing function on indoor air and cause no harm to people, pets, plants or materials.

Odors from flooding, mold spores, cigarette smoke, fire damage, sewage spills, off gassing, body odor and decomposition are all safely broken down by a hydroxyl generator until all that remains is carbon dioxide and water.

Since hydroxyls result from water vapor, any meaningful amount of hydroxyl generation requires significant relative humidity in the air. The HYDRA ULTRA solves the low-humidity problem by generating and transferring water vapor to a direct injection manifold inside the machine that evenly distributes the vapor over the optics to maximize hydroxyl production. The ULTRA includes three different injector sizes to regulate the amount of vapor released.

In addition to safe PCO mode, the HYDRA ULTRA's three AOP modes can double or triple hydroxyl production. These options include low concentration Hydrogen Peroxide Vapor (HPV), low concentration UV Ozone (O3/UV) and a combination process.

In PCO mode (Safe Mode), the HYDRA ULTRA harnesses the power of water, UV light and a catalyst to safely generate hydroxyls that neutralize odors, break down bacterial spores and pathogens, and leave nothing but fresh, clean air. PCO mode can be used with or without the included water vapor injection system, depending on site conditions. The resulting byproducts are harmless carbon dioxide and water.

PCO hydroxyl generation, originally developed by NASA, is ozone-free and safe to use indoors for continuous operation in unventilated spaces for as long as it takes to remove odors and break down contaminants.

Contaminated air is drawn through an odor-neutralizing pre-filter and a HEPA filter to trap most particulates. Next, the unit employs six germicidal (253-nm UVC) optics in a 2-layer crosshatch pattern along with 3 layers of nano-catalyst to produce hydroxyls that break down volatile organic compounds (VOCs) and other contaminants that pass through the unit's air flow. The machine's high static pressure centrifugal fan runs quietly, making it a good choice for occupied areas such as a client's home.

In AOP Mode 1 (PCO / HPV + UV), hydrogen peroxide is used in the ULTRA's ultrasonic direct injection system instead of pure water. The resulting low-concentration hydrogen peroxide vapor (HPV) vapor breaks down into hydroxyls when exposed to the unit's germicidal UV light without requiring the catalyst. To initiate AOP Mode 1, you simply add a commercially-available hydrogen peroxide solution to the unit's direct injection reservoir and run the Advance in PCO mode. PhotoCatalytic reactions on the catalyst will occur simultaneously. No ozone is generated in Safe Mode, however, HPV levels in the air must be monitored if workers are present. This AOP is the simplest method to generate hydroxyls using UV light. Below is a simplified equation for this AOP where two hydroxyl radicals are created from each hydrogen peroxide molecule:

Hydrogen Peroxide / UV Light:
H2O2 + UV —› 2 •OH

In AOP Mode 2 (PCO / O3 + UV), the HYDRA ULTRA activates a seventh optic that generates low concentration ozone. In the presence of water vapor and germicidal UV light, the ozone breaks down into hydrogen peroxide vapor (HPV), then into hydroxyls without requiring the catalyst. PCO mode continues to run simultaneously. The ULTRA's ultrasonic direct injection system can be used to add water vapor if the humidity in the treatment area is too low. Ozone levels in the air must be monitored if workers are present. Below is a simplified equation of this AOP:

UV Light / Ozone:
O3 + H2O + UV —› O2 + H2O2 followed by 2 O3 + H2O2 —› 2 •OH + 3 O2

In AOP Mode 3 (PCO / HPV + O3 + UV), the HYDRA ULTRA combines hydrogen peroxide vapor (refer to AOP Mode 1) and low concentration ozone (refer to AOP Mode 2). PCO mode continues to run simultaneously. As the ozone and HPV form hydroxyls, the UV light exposure causes more direct and indirect oxidation reactions to occur. The result is a greater conversion of intermediate reactants into hydroxyls (•OH), e.g. more cleaning power. HPV and O3 levels in the air must be monitored if workers are present.

In AOP modes the resulting reactions can double the unit's efficacy, increase the overall coverage area or shorten the cleaning time. Since some ozone and/or hydrogen peroxide vapor off-gassing will occur, AOP modes require an unoccupied area or proper worker protection, especially when there is little ventilation. Ozone and hydrogen peroxide off-gas will each break down naturally into oxygen and oxygen/water, respectively, after a few hours.

All advanced oxidation processes used in the BoiE Advance hydroxyl generator are well-studied and have been used for years in advanced water purification systems and medical sterilization equipment.

Bottom Line:
The standard PCO mode is most beneficial when the machine can be run for longer periods of time, with or without occupants or workers present. The advanced oxidation process modes can increase the coverage area and decrease the cleaning time, provided that the job site is either unoccupied or is monitored for worker safety.* Both modes clean the air without causing damage to plants or sensitive materials. The HYDRA ULTRA includes a direct injection version of BoiE's Ultrasonic Hydroxyl Accelerator accessory that turbocharges the airflow with moisture to maximize hydroxyl production in dry conditions.

Like all BoiE products, the HYDRA ULTRA was designed by professionals for professionals to exceed, outlast and outperform the competition!

Hydroxyl Remediator Certification (Limited Time Offer)
Your purchase includes BoiE's exclusive 32-hour, comprehensive Ozone and Hydroxyl Remediator certification course. Learn how to utilize hydroxyl generation and properly apply ozone for odor removal, disinfection and restoration applications. Learn the protocols, how to identify and assess the source of odors, corrective measures and preparing treatment reports. Provides a path for starting a new business or expanding your current services. Course includes a helpful Online DVD with demonstration videos. You can enroll and simply use the course material as a reference if you don't need the certification.


  • Unbreakable, stackable rugged case
  • Padlock holes for added security
  • IPX7/MIL-STD810F and 512.4/IP6X Certifications
  • Wide track wheels and pull handle
  • Airline carry-on luggage compliant size
  • All-aluminum internal support frame for Hydroxyl Reactor
  • Reflective interior surface to increase hydroxyl production
  • HEPA Filter with built-In odor neutralizing particle pre-filter
  • Low-cost, common-sized, generic HEPA filter replacements
  • Air Scrubber / Negative Air functionality with or without optics on
  • Removable flanges to connect to containment area or ducting
  • Long-life 9,000 hour 253-nm UV-C (germicidal) optics with low power consumption
  • Lamps arranged in a 2 layer crosshatch for maximum air contact
  • TiO2 Catalyst Grid surrounding all lamps allows maximum hydroxyl generation and airflow
  • Quiet UL listed centrifugal blower with overload-protection
  • Marine-grade straight blade inlet receptacle fits extension cords
  • GFCI-protected electrical outlet and internal wiring
  • Marine-grade tin-plated copper wiring
  • Waterproof heat shrink electrical crimp connectors
  • Anti-oxidant compound applied to copper wire connections
  • Overload-protected transformers
  • BoiE warranty which exceeds the industry standard


Type of Use:

Air purification treatments including allergens, smoke, mold and VOCs

Case Material:

Rugged polymer with stainless steel hinge pins

Case Type:

Crush-resistant, stackable, lockable, wheels and pull handle

Case Ratings:

IPX7/MIL-STD810F 512.4/IP6X Certifications


1-position, stand upright



Max Coverage:

6,000 sq ft with 10 ft ceilings


HEPA with built-in pre-filter

Air Scrubber:


Negative Air:



365 CFM (max), shaded-pole centrifugal

Electrical Rating:

120V~60Hz 4.3 Amps

Mode 1:

PhotoCatalytic Oxidation (PCO)

Mode 2:

Advanced Oxidation Process (AOP)


253-nm UV-C (germicidal) x6
185-nm UV-C (ozone-producing) x1

PCO Reactor:

BoiE 6-Optic 360-surround Reactor


Permanent nano-anatase TiO2 (replaceable)

Power Connection:

Straight Blade Inlet Receptacle, Marine-grade

Accessory Outlet:

Yes, GFCI-protected

Power Switch:

Switch 1 (Air Scrubber): ON/OFF
Switch 2 (Hydroxyl Generator): PCO / OFF / AOP


24 x 16 x 10 inches


28 lbs


20 ft. grounded power cord
Ultrasonic Direct Injection H2O/HPV Hydroxyl Accelerator with three injector sizes ($299 value)

* The U.S. Occupational Safety and Health Administration (OSHA) Permissible Exposure Limit (PEL), averaged over an eight-hour work shift, for ozone is 0.10 ppm and 1 ppm for HPV. When used in AOP modes in confined spaces, the HYDRA ULTRA may exceed PEL and require appropriate personal protective equipment (PPE). Monitoring is required if workers are present.

BoiE Hydroxyl Generators

Hydra HVAC INDUCT hydroxyl generatorHYDRA INDUCT

Hydra FUSION hydroxyl generatorHYDRA FUSION

Hydra QUAD hydroxyl generatorHYDRA QUAD

Hydra PRO V2 hydroxyl generatorHYDRA PRO V2

Hydra ULTRA hydroxyl generatorHYDRA ULTRA

Ultrasonic Hydroxyl AcceleratorHydroxyl Accelerator

Why Customers Trust BoiE

We have been in business since 1999 and are well-known throughout the indoor air quality (IAQ) industry. We offer environmental training and manufacture the best ozone generators and hydroxyl generators available. We offer a 30-day money-back guarantee, a 1-year unlimited warranty and lifetime customer support. Read our FAQs page for terms, conditions, and lead times.

We take pride in our products and training and are always there to offer help and support. We know how much your business reputation depends on using reliable products with top-notch support if anything goes wrong. We are on the cutting edge of the industry and are always looking for ways to improve our products and offer you more value.

We build the best ozone and hydroxyl generators on the market today. Every unit is assembled in-house and goes through quality control and rigorous testing before we ship. If something goes wrong or wears out, we carry every part and will offer the best solution to get you up and running quickly!


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