Sy-Klone Cab Air Quality Systems

Minimize DustMaximize Protection

AS/NZS ISO 23875 Compliant and RS20 Compliant


Protect heavy mobile equipment operators and engines in high-debris work environments

What is a Cab Air Quality System?

A complete system is comprised of three main parts:

  • Fresh Air Precleaner/Filter/Pressurizer
  • High-Efficiency Recirculation Filtration
  • Pressure and CO2 Monitor

How Complete Cab Air Quality System Works:

  1. Fresh air and debris are pulled into the powered pre-cleaner/filter/pressurizer (RESPA-CF2).
  2. Debris is separated from the airflow and ejected from via patented technology.
  3. Cleaned and filtered air is delivered to the machine’s HVAC unit without added restriction by the powered RESPA unit. This creates positive pressure, which prevents dust from ingressing into the cab.
  4. Clean, filtered, and conditioned air flows through the cab.
  5. Monitor alerts the operator to the loss of positive pressure in the cab and when to change the RESPA filter.
  6. High-efficiency recirculation filtration (Powered RESPA-CFX and PFX) continuously removes dust from the cab, minimizing settled dust accumulation. Clean, filtered air flows back to the HVAC plenum.

Why use a Sy-Klone RESPA Air Quality System?

  • Exceeds AS/NZS ISO 23875 (Australian & Global Standard for cab air quality) and RS20 (Recognised Standard for cab air quality) engineering control requirements when configured with EPA or HEPA filtration and the RESPA Advisor+ CO2 + Pressure Monitor.
  • Air quality control systems for all operator enclosures, performance requirements, and test methods pave the way to ensuring all mobile machinery operators’ safety. Sy-Klone products improve air quality and reduce occupational exposure to meet cab quality standards.
  • Meets engineering controls criteria specified by OSHA Silica Rules, including precleaning, MERV 16 or better filtration, positive pressurization, and settled dust removal.
  • Protect operator health and life longevity
  • Dramatically extend filter life
  • Increase operator comfort and productivity
  • Decrease operational cost
  • Reduce environmental contamination and deterioration of cab electronics
  • Endorsed by ISEEE as a Best Practice Component

Where can you use the RESPA Air Quality Systems?

  • Mobile Machinery Assets – Operator Cabs
  • Concrete Batch Plants/testing facilities
  • Demolition
  • Anywhere where dust or potential respiratory risks occur

United Safety Capability

  • Our business has the national reach and professional experience to deliver customer needs.
  • We are excited to provide a world-leading class product that fits our existing and new customer needs providing multiple safety solutions for your business including fire protection, seating, and air quality.


Mining and Quarries

Civil & Tunnelling

Waste and Recycling




Technical Electrical Rooms

Battery Storage


Protect Workers’ Air Quality. Reduce Occupational Exposure to Dust and CO2

AS/NZS ISO 23875 is an international standard that creates a consistent approach to designing, testing, operating,and maintaining operator enclosures with respect to air quality.

What is AS/NZS ISO 23875?

Published in February 2021 and updated in 2022, ISO 23875 is a new international standard that unifies the design, testing, operation, and maintenance of air quality control systems for heavy machinery cabs and other operator enclosures, particularly in the mining industry. Adherence to the requirements and testing methods set out in the standard supports the safety of machine users, improves productivity, promotes operator alertness, and enables companies to reach exposure reduction goals.

Benefits of Implementing AS/NZS ISO 23875

• Reduced exposure to respirable particulate
• Reduced exposure to CO2
• Improved operator safety, comfort, and moral–supporting exposure reduction goals, health and safety efforts, and recruitment/retention
• Improved machine uptime and lower operating costs through meeting defined maintenance intervals

AS/NZS ISO 23875 Requirements

  1. Defined CO2 Levels
    First alarm threshold: Ambient CO2 level plus 400 parts per million (PPM).
    Second CO2 alarm threshold: 2,500 PPM.
  2. Defined Fresh & Recirculation System Efficiency
    Maximum respirable particulate matter concentration less than 25 micrograms per cubic meter of air at start and end of decay test (maximum 120-second decay time).
  3. Increased Filter Efficiency Requirements
    Updated in June 2022: Filtration that exceeds 94% efficiency at 0.3 microns is recommended. Filters must pass the required intake air leakage and particle decay tests.
  4. Defined Pressurization Requirements
    Operator enclosures must maintain a minimum pressure of 20 Pa with key on and HVAC blower turned off.
  5. Defined, Real-Time Monitoring Requirements
    Monitor must include an audible alarm for CO2 and pressurization to alert the operator when levels exceed the permissible pressure and CO2 thresholds.