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Mine Air Heaters

Complete mine air heating and ventilation solutions with airflow capacities ranging from 20,000 to 2,500,000 SCFM

The turnkey approach to a Howden ACI (Advanced Combustion Inc.) range of mine heater technology typically consists of the Mine Air Heater, Main Supply and Exhaust Fans, Interconnecting Ductwork, Silencers and Plenums, Complete Fuel Storage and Supply Systems (Propane and Oil), On Site Commissioning and Training. The complexity of the control system varies from simple, local temperature and modulation control to fully automated PLC control with customized HMI screens and remote communications.

Our Mine Air Heaters in the following configurations: Portable, Permanent, Direct Fired, Indirect Fired, Horizontal Discharge, Vertical Discharge, Single Fan and Multi-Fan. ACI heaters are capable of burning everything from Natural Gas and Propane to Waste Oil.

Dependability, reliability, premium efficiency, serviceability, and low emissions are key considerations in the proper design of a mine shaft heating system. Our ACI range combines decades of engineering experience with state-of-the-art combustion and heat transfer technologies to provide optimum heating solutions that are dependable, reliable, efficient, easy to maintain and service and are environmentally friendly. We ensure that every heater is designed to operate safely and effectively in harsh environments, like the Canadian Arctic, that require careful consideration of every detail.

Howden have for many years been the leader in supplying Total Mine Ventilation Solutions and, with the acquisition of Advanced Combustion Inc., is now a leading supplier of Mine Ventilation Heating Systems in both Canada and the United States, with capability to supply solutions worldwide since the acquisition completed.

Systems offered include complete heater houses either 'Penthouse' style or Horizontal dual or single fan models with louvre or birdscreen inlets.

ACI air heaters for mines - setting the standard for heating north of 60°

This product is a part of TMVS – Total Mine Ventilation Solution, the integrated suite of expertise, products and services that provides efficiency and safety across your mine operations


  • Custom Control Systems
  • Valve Train Design
  • Vertical or Horizontal Discharge

Notable installations

  • 800,000 SCFM Direct Fired, Horizontal Discharge Mine Air Heater - Propane
  • 350,000 SCFM In-Direct Fired, Horizontal Discharge Mine Air Heater - Waste Oil
  • 1,000,000 SCFM Direct Fired, Vertical Discharge Mine Air Heater - Natural Gas
  • 350,000 SCFM In-Direct Fired, Horizontal Discharge Mine Air Heater - Artic Diesel

ACI Mine Air Heaters Gallery

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