Explosion Proof Air Conditioners & Dehumidifier

Ex-Machinery specializes in converting high-quality HVAC systems into explosion-safe air conditioners designed for operation in hazardous and potentially explosive environments. These systems are certified for use in Zone 2 / Zone 22 areas and are engineered to ensure safety, reliability, and long-term performance in demanding industrial conditions.

Frequently Asked Questions – Explosion-Proof Air Conditioners

What is an explosion-proof air conditioner?

An explosion-proof air conditioner is a specially engineered HVAC system designed for use in hazardous and potentially explosive environments. These units are modified and certified to prevent ignition of flammable gases or dust and are typically compliant with ATEX Zone 2 and Zone 22 requirements.

• Where are explosion-proof air conditioners used?
• Explosion-proof air conditioners are commonly used in:
• Oil & gas facilities
• Chemical and petrochemical plants
• Offshore platforms and marine vessels
• Battery rooms and energy storage areas
• Control rooms and analyzer shelters
• Refineries, fuel storage, and hazardous warehouses

• Which ATEX zones require explosion-proof air conditioning?
• Explosion-proof air conditioners are primarily used in:
• ATEX Zone 2 (Gas) – where explosive gas atmospheres are not expected during normal operation but may occur occasionally
• ATEX Zone 22 (Dust) – where combustible dust may be present occasionally

• What certifications should an explosion-proof air conditioner have?
• A certified explosion-proof air conditioner should comply with:
• ATEX Directive 2014/34/EU
• Relevant EN IEC 60079 standards
• Certification should clearly indicate suitability for the intended gas or dust zone.

• Are explosion-proof air conditioners different from standard industrial air conditioners?
• Yes. Unlike standard industrial air conditioners, explosion-proof air conditioners undergo special modifications, including:
• Spark-free electrical components
• Surface temperature control
• Certified enclosures and protection methods
• These modifications ensure safe operation in hazardous areas.

Can explosion-proof air conditioners provide both cooling and heating?

Yes. Most explosion-proof air conditioners are designed to provide both cooling and heating, allowing stable climate control during extreme daytime heat and cooler night temperatures, especially in desert and offshore environments.

• What types of indoor units are available for explosion-proof air conditioners?
• Explosion-proof air conditioners are available with multiple indoor unit options, including:
• Wall-mounted units
• Ceiling-suspended units
• Cassette units
• Ducted units
• Availability depends on the selected model and application.

Can explosion-proof air conditioners be connected to BMS or DCS systems?

Yes. Many explosion-proof air conditioners can be integrated with Building Management Systems (BMS) or Distributed Control Systems (DCS) for centralized monitoring and control, subject to project requirements.

• Is it possible to install only part of the system in a hazardous area?
• Yes. Explosion-proof air conditioners offer flexible configurations, such as:
• Indoor unit in hazardous area with outdoor unit in safe area
• Indoor unit in safe area with outdoor unit in hazardous area
• Both indoor and outdoor units certified for hazardous areas

• How do I select the right explosion-proof air conditioner for my application?
• Selecting the right explosion-proof air conditioner depends on several factors, including:
• ATEX zone classification
• Ambient temperature conditions
• Cooling and heating load
• Continuous duty requirements
• Installation location and space

A detailed technical evaluation is recommended before final selection.

Learn about our Ex-Machinery hazardous-area HVAC partner, or compare the Ex-M Classic explosion-proof air conditioner.