Regenerative Catalytic Oxidizers (RCO)

A regenerative catalytic oxidizer (RCO) starts with the proven benefits and similar heat recovery of an RTO and adds a catalyst into the system allowing it to operate at much lower temperature- sometimes achieving 80%-100% fuel savings. 


Regenerative Catalytic Oxidizers
Refurbished RCO

Nearly any RTO in our inventory can be converted to operate as an RCO.

Regenerative Catalytic Oxidizers
Custom RCO

A custom RCO starts with an RTO as its building block, and simply adds a catalyst layer to provide the benefits of an RCO.

We will custom design and build an RCO for your application.

Regenerative Catalytic Oxidizers
Rebuilt RCO

Your existing RTO may be a candidate for conversion to an RCO. Send us your process conditions and we will make a quick assessment of the viability and the benefits of converting to an RCO.

What you need to know about RCO technology

Regenerative Catalytic Oxidizers
Destruction Efficiency of 98-99%

Boosting fuel efficiency over even the highly fuel efficient RTO, while maintaining high VOC destruction efficiency for many industrial applications.

Regenerative Catalytic Oxidizers
Ideal for Consistent, Clean Applications

Applications with little VOC variation and no particulates are ideal for RCOs. Particulates can build up in the catalyst layer. Also, certain chemicals can “mask” or “poison” the catalyst“, reducing performance or requiring costly replacement.

Regenerative Catalytic Oxidizers
RTO to RCO Retrofit

Retrofit of catalyst into an existing RTO is a relatively simple conversion, since the catalyst is placed on top of the ceramic media beds. It can be done as an addition to an RTO with only control logic changes, or it can be accomplished along with a full ceramic media upgrade.

An RCO is the most fuel and electric efficient oxidizer technology for VOC removal.
What are the unique features of a KonoKogs RCO system?

Extensive catalyst application experience allows our engineers to select the right catalyst type, and pair it with an optimized ceramic media mix for long life, and for low fuel and electric use.

What is the role of heat recovery chambers in thermal oxidizers?

An RCO is essentially an RTO with a catalyst layer added. (See What is an RTO?).

How often should RCO catalysts be tested?

Annually (and is usually determined by your operating permit)

What are common applications for RCOs?

Chemical, pharmaceutical, OSB (oriented strand board) press, particle board dryer, MDF (medium density fiberboard) dryer, plywood, paint spray booths; and any application under 2% LFL is a good candidate

What are the operating considerations for catalytic oxidizers?

Particulate free or well filtered airstreams with no catalyst-masking chemicals

How to choose between RCOs and recuperative units?

RCOs offer greatest fuel economy by far, but recuperative units may be best for high VOC concentration airstreams (or an RTO can be considered).

What are the types of catalytic oxidizers?

Regenerative and Recuperative

What is the efficiency of RCOs?

Up to 99% VOC destruction efficiency; and up to 97+% thermal efficiency.

How do thermal and catalytic oxidizers differ?

Catalyst in an RCO allows chemical reactions to occur at lower temperatures (850F) than an RTO’s typical 1600F operating temperature.

Which Industries are most likely to need an RCO?

Chemical, pharmaceutical, and wood products.

Can I convert an existing RTO to an RCO?

Yes. It is normally a simple conversion

Why choose KonoKogs RCOs?


  • RTO/RCO design drawn from 25+ years rebuilding nearly every RTO/RCO system
  • Extensive catalyst application experience from decades of recuperative catalytic application
  • Pre-piped, pre-wired system for easy drop in place installation
  • State-of-the-art controls and user interfaces
  • Prewired and factory assembled
  • Simple, quick Installation
  • Installation nationwide by our experienced crews for superior project control
  • Ductwork/damper design, fabrication & installation available (typ 2nd highest oxidizer project cost item)


  • 95 to 97+% thermal efficiency (TER)
  • Up to 99% destruction efficiency (DRE)
  • Customized ceramic media bed configuration for long-life and low utility cost

RCO Service Options

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