Specialist Mechanical Engineers


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Climate-Control Rooms, Air-Conditioning Units and Substations

907 Hertzog Street,
South Africa
Fax Number

Specialist Mechanical Engineers (SME) Mining offers custom-made mechanical and air-conditioning solutions to the mining sector.

Air-conditioning for highly ambient mine sites

SME supplies high-ambient cooling, temperature control, HVAC units and solutions; portable and fixed electrical houses, and substations; design and establishment of production lines; as well as continuous plant upgrades.

SME’s integratable air-conditioning units (aircons) are designed to operate in adverse conditions, providing reliable cooling for industrial enclosures with high-temperature environments of up to 65°C. Optional features make the units versatile and the structures are easy-to-maintain, with all spare parts readily available.

Aircon units for mining vehicles and machines

SME offers custom air-conditioning solutions for mining vehicles operating in temperatures up to 55°C. Mine vehicle aircon units are developed to be reliable in high-temperatures and humid, dusty environments, and able to withstand shocks and vibration.

This is a floor-standing, 20kW air-conditioning unit with the electrical compartment door open.
Condenser section are provided for 12kW air-conditioning units.
A close-up of the electrical compartment indicating contactors, electrical filters and PLC controller.
SME provides stackable modular PLC controllers.
Air-conditioning system and ducting are offered for people-carrier mining vehicles.
SME’s rooftop air-conditioning units are used for driver compartments.
Installations provided by SME include electrical houses both with removable roofs on a crawler structure.
Solutions offered include a 100% fresh air rooftop packaged unit with a ventilation system.
A fixed platform of 8m-long x 7m-deep x 11m-high that is used in an assembly line.
Robotic grab arms are used for material stacking in a production line.

All SME temperature control units are performance tested in SME’s climate-control room. The equipment is also vibration and EMC-tested, where necessary, to ensure optimum performance and compliance with the relevant specifications and procedures.

Climate-control rooms and substations for plants

SME offers climate-control rooms with electrical houses (E-houses) or substations, designed to meet clients’ carbon footprints.

The large, movable compartments are custom-built to last for 30 years* in extremely adverse environments and are ideal for housing electrical switchgear panels (*enclosures are manufactured to SS316, SS304 or 3CR12).

SME’s HVAC solutions for plants and buildings are offered as normal packaged and split units, chiller solutions, and thermal ice and hot water storage systems.

The company supplies the latest technologies for plant upgrades, including robotic grabs for material stacking, unmanned shuttle cars for material transfer, trailer solutions for distributing parts in production lines and mobile and fix platforms for production assembly lines.

Robust, high-ambient air-conditioning units

SME’s air-conditioning units are available in 1.5kW to 20kW powers and operate in ambient environments up to 65°C. Units can be equipped with a fresh air supply for operator comfort and well-being.

The aircons remove harmful chemical vapours from the air, such as tear gas, fluorides and sulphides, as well as coarse and fine dust particles and any corrosive agents.

SME air-conditioners are protected against over and under-voltage, phase loss and over-current. They are also fitted with an advanced stackable modular PLC controller, with the following key features:

  • Atmospheric protection against gas
  • IP54 for all interior electronic components
  • Low refrigerant detection, HP / LP protection and anti-ice protection
  • Fan speed control, voltage fault protection to protect against phase loss, phase rotation, voltage drop / dip, voltage spike protection
  • Black-out protection and brown-out protection

The controller enables communication via Bluetooth to smartphones when setting-up and for diagnostic analysis, and is fitted with a CANBUS industrial network interface.

Vehicle-integrated air-conditioners

SME custom-designs in-vehicle air-conditioners to match the vehicle’s purpose, for example, cabin evaporator designs include fitment options for under seats, against side walls, recessed in floor, roof-mounted and integrated in the driver’s console.

Aircon form and fitment are adapted to interface with ducting, diesel burner air heaters and chemical filtration modules. Condensers can be integrated with engine cooling packs or packaged as bolt-on modules. Typical standard capacities are up to 20kW to achieve 22°C cabin temperature in a 55°C ambient environment.

SME uses high-efficiency scroll compressors and effective capacity control, in accordance with the load. Heating can be supplied by evaporator-integrated elements, separate heating or reverse-cycle heat pump design.

Electrical houses, substations and temperature controlled rooms

E-houses provide a reliable, dust-free, IP65 climate-controlled environment for a wide variety of equipment such as variable speed drives (VSD), switchgear and auxiliary power units.

E-houses are designed for very corrosive and highly ambient conditions up to 65°C. Ruggedised air-conditioning units can be designed specifically for operations in coastal and highly corrosive environments.

Low-maintenance, over-pressure modules prevent dust contamination by using a self-cleaning primary cyclone filtration system that removes more than 90% of dust particles. Secondary carbon, media and Hepa filters may be added.

SME ensures its E-houses meet clients’ safety standards with design options such as removable roofs, fire prevention and suppression systems, false flooring for cable routing and doors equipped with panic escape equipment.

HVAC solutions for plants and buildings

SME offers clients a single service to address their HVAC needs, from detailed design and supply to installation. SME offers:

  • Chiller solutions, including piping
  • Thermal ice and hot water storage systems
  • Ducting and fire dampers
  • Building management systems (BMS)
  • Complete scope for electrical works, including electrical distribution boxes and substations

Computer-aided design engineering

SME uses CAD to develop the company’s mechanical, electrical and electronic designs into innovative products.

The company strives to provide cutting-edge solutions to a variety of industries by using the latest CAD modelling, finite element (FEA) and flow analysis (CFD) software packages.

About Specialist Mechanical Engineers

Specialist Mechanical Engineers is an entrepreneurial and innovative company committed to supplying quality solutions on time.

The company has achieved success through the diversification of its services, as well as building strong, talented and hard-working teams comprising of project managers, engineers, technicians and quality control representatives.


Products & services

Specialist Mechanical Engineers (Pty) Ltd
907 Hertzog Street
South Africa

Email address
Richards Bay Branch - HVAC Installations and Services
1 Rhino Park
81 Ceramic Curve
South Africa

Email address
Fax Number
Matola Mozambique Branch - HVAC Installations and Services, and Manufacturing
Estrada Nacional (EN4) No 859

Email address
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