Advanced Protection for Operator Cabins
Protect operators with a dual HEPA filtration system in a pressurised cabin.
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Closed-Circuit Filtration Systems
Dual HEPA-Filtered, Pressurised, Monitored and Controlled
Intelligent Air Filtration Technology
BreatheSafe system intelligently regulates and maintains positive cabin pressure at a preset level, preventing dust ingress.
Closed-Circuit Filtration System
BreatheSafe closed-circuit system ensures every air entry point is HEPA-filtered, eliminating unfiltered airflow and maximizing protection.
Complete System Solutions
Fully integrated air filtration and pressurisation systems, custom-designed to fit a wide range of machines.
Applications
Support a wide range of industries, including Mining, Civil Construction, Tunneling, Landfill, Agriculture, Smelters etc.
Caterpillar Haul Truck 793C
Komatsu Haul Truck 830E
Hitachi Haul Truck EH5000
Liebherr Mining Truck T264
Bell Haul Truck B50E
Terex Rock Truck MT4400
Caterpillar Articulated Truck 745
Hyundai Wheel Loader HL760-9
Caterpillar Dozer D11
Volvo Wheel Loader L180H
Komatsu Dozer D155AXI-8
Kubota Skid Steer Loader SSV75
Caterpillar Dozer D10
Sandvik Loader LH612i
Bobcat Skid Steer S76
Yanmar Loader V4-7
LeTourneau Wheel Loader L1850
Komatsu Excavator PC200LC-8
Caterpillar Excavator 336NG
Kobelco Excavator SK350LC-10
Liebherr Excavator R9150
Sumitomo Excavator SH370LHD-6
Bobcat Excavator E55Z
Case Excavator CX60C
Hitachi Excavator ZX135US-5
Toyota Forklift 4FD100
Hyster Forklift H12XM-6
JCB Rough Terrain Forklift 930-4
Manitou Telescopic Forklift MHT-X 860
Linde Forklift H250
Konecrane Forklift
Toyota Land Cruiser
Toyota Hilux
Kovatera KT200
Isuzu Tow Truck
Hino Truck 500
Epiroc SmartROC Drill Rig T40
New Holland Tractor T5.95
Bomag Compactor BC772RB2
ASC Eureka Sweeper M8
Toro Lawn Mower 31909
Wacker Neuson Dumper DV90
Bergmann Dumper C815
BreatheSafe Components
TL High-Pressure HEPA Pressuriser
Equipped with a HEPA H14 filter, variable speed motor, and fully IP66-rated design, it delivers high-performance cabin pressurisation and reliable protection in harsh environments.
Air Quality Monitor and Controller
Exceeds industry standards such as ISO 23875 and the MSHA Silica Rule through real-time monitoring, precise control, and seamless integration with BreatheSafe’s HEPA filtration systems.
Custom Panel HEPA Recirculation Filter
Designed to integrate with the cabin’s HVAC system, captures 99.95% of particles ≥0.3 microns, providing clean air, extended filter life, and easy installation in a durable, OEM-ready metal housing.
Powered HEPA Recirculation Filter
Equipped with a HEPA H14 filter, variable speed motor, actively filter recirculated air, rapidly reducing particle levels after door openings and ensuring the cleanest air in the operator’s breathing zone.
Custom Install Kit
Designed for flexibility and precision, includes all components needed for seamless OEM integration and durable, efficient installation across a wide range of machine types.
Activated Carbon Filter
Remove harmful gases, vapours, and odours, adsorbing airborne chemicals that standard filters can’t capture. Ideal for environments with diesel exhaust, VOCs, and chemical exposure.
How It Works
Pressurise The Cabin With Clean Air (1st HEPA)
The BreatheSafe system protects operators by pressurising cabins with HEPA-filtered air, preventing hazardous dust, silica, and airborne contaminants from entering.
Our HEPA air filtration system helps you exceed industry standards, such as MSHA, ISO 23875 or RS20. Ensuring a safer work environment in mining, construction, and heavy industries while reducing respiratory risks.
Recirculating and Filtering In-Cabin Air (2nd HEPA)
Even in a sealed cabin, contaminants can be introduced through clothing and equipment. BreatheSafe continuously recirculates in-cabin air, filtering it twice through HEPA-grade filtration to remove fine dust, allergens, and pathogens.
The second stage of filtration maximises efficiency to shorten decay time, rapidly reducing airborne contaminants and restoring clean air within minutes. It means that operators breathe cleaner air faster, minimising exposure to harmful particles while enhancing HVAC efficiency and overall cabin air quality.
Air Quality Controller Monitors The Air
BreatheSafe controllers monitor air quality in real time, eliminating manual inspections and reducing dust exposure. By analysing particulates, pressure, and temperature, they optimise system performance and extend component life.
The OnGuard controller features an automated high-dust and CO₂ flush, purging contaminants when needed. This maintains optimal air quality, prevents CO₂ buildup, and reduces operator fatigue, ensuring a safer, more productive work environment.
Filtering VOCs Using Activated Carbon Add On
Industries such as mining, agriculture, landfills, smelters, and industrial processing expose operators to volatile organic compounds (VOCs), exhaust fumes, and chemical vapours, increasing health risks.
The BreatheSafe activated carbon module effectively absorbs harmful gases, preventing toxic airborne chemicals from accumulating inside the cabin.
Powered Recirculation Filter Add-On (3rd HEPA)
In extreme environments where airborne dust levels remain consistently high, continuous removal of particulates is essential for maintaining safe cabin conditions.
The BreatheSafe Powered Recirculation Filter unit draws in dusty cabin air, filters it through a HEPA H14 filter, and recirculates clean air back.
Reducing cabin decay time and minimising dust loading on the HVAC recirculation filter.
Frequently Asked Questions
What is a cabin pressurisation system, and why is it important?
A cabin pressurisation system supplies filtered air into an enclosed cabin, maintains positive pressure, and includes an in-cabin recirculation filter to create a “closed circuit” pressurisation system. This helps ensure cabin air is continuously filtered before reaching the operator’s breathing zone and the HVAC unit, especially sensitive components such as the condenser coil.
It is essential to have a cabin pressurisation system when operating in environments with respirable dust, silica, asbestos, or other hazardous airborne contaminants. Many Tier 1 and Tier 2 mine sites require enclosed cabins with pressurisation systems to help meet site safety requirements and protect operators. You cannot see it does not mean you are safe. Hazardous dust such as silica and asbestos can be invisible to the eye, but still present a serious health risk.
Why do my HVAC systems fail, and can a cabin pressurisation system help?
Common issues for HVAC units in dusty environments include blocked filters, poor cabin sealing, leaking door seals, contaminated outside air, unstable airflow, and dust build-up inside the HVAC unit.
Photo of a low-grade return air filter causing debris build-up on evaporator coil and leading to HVAC unit failure.
From site experience, one of the most critical concerns is the dust built up, causing blockage of the evaporator coil. When dust and fine particles are allowed to circulate inside the cabin, they can build up on the evaporator coil, reduce cooling efficiency, restrict airflow, and increase stress on the HVAC system.
When fitted with a “closed-circuit” cabin pressurisation system, internal dust is continuously scrubbed by the HEPA recirculation filter, while the HEPA pressuriser helps maintain positive pressure. This reduces the chance of dust reaching the operator’s breathing zone and the HVAC unit. It also helps protect critical HVAC components, such as the evaporator coil and supports more reliable system performance in harsh environments.
Related Topic: What is a “Closed-Circuit Pressurisation System”?
What are the key requirements for a cabin pressurisation system?
A cabin pressurisation system should be designed to deliver both air quality performance and long-term durability in harsh operating environments.
From an air quality perspective, many sites now use global standards such as ISO 23875, along with regional requirements such as the MSHA Silica Rule in North America, to assess operator cabin protection. These standards and site requirements generally focus on key performance areas such as positive cabin pressure, high efficiency filtration, real-time monitoring, reducing decay time and maintaining clean air within the operator enclosure. This means a cabin pressurisation system should not only supply filtered air, but also provide reliable and measurable protection in harsh environments.
From a build quality perspective, the design of the system also matters. Variable speed pressurisers can also offer better control over cabin pressure and airflow than fixed speed units, helping the system respond more effectively to changing operating conditions. Rigid ducting can provide a more stable and durable airflow path than corrugated ducting, especially in harsh mining environments.
A well-designed cabin pressurisation system should not only filter air, but also maintain consistent performance over time in real-world site conditions.
Related Topic: ISO 23875 Cabin Air Quality Standard & MSHA Silica Rule
Does a cabin pressurisation system protect against gases and fumes?
A standard cabin pressurisation system with particulate filtration is designed to protect against dust and airborne particles, including respirable dust and silica. Particulate filters do not remove gases, fumes, or chemical vapours.
If your machines operate in environments with diesel exhaust, VOCs, landfill gases, smelter fumes, or other hazardous gases, an activated carbon filter should be used alongside the cabin pressurisation system to address both particulate and gas phase contaminants.
Related Topic: Working with hazardous gases and vapours
What maintenance spare parts are needed for a cabin pressurisation system?
Common maintenance spare parts include replacement fresh air filters (for pressurisers), panel recirculation filters, activated carbon filters, window and door seals, and gaskets.
Regular replacement of these parts is important to maintain airflow, cabin pressure, and filtration performance. Over time, loaded filters and worn seals can reduce the system’s ability to keep contaminated air out of the cabin and may affect overall system performance. It is also important to follow site maintenance guidelines and recommended service intervals when maintaining your cabin pressurisation system.
Media
BreatheSafe System Explanation
Exceed ISO 23875 with BreatheSafe
The Best Air Filtration System Setup
OnGuard Remote Controller
InPress Controller + CO₂ Sensor
Filter Replacement Guideline
Other Solutions
Electrical Cabinet Pressurisation
Clean Room Pressurisation
Build Your Own