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Air-to-Air Exchangers

Diagram showing a circular object with force vectors indicating compression on the left side and tension on the right side.

Heat Wheels design units are the most energy efficient and by far the most popular technology used worldwide and by Annexair, too. Capacities vary from 2,000 CFM up to 100,000 CFM.

Diagram of a square-shaped device with four arrows pointing towards and away from its sides labeled IN (left), OUT (right), IN (bottom), and OUT (top).

Fixed Plates design is our 2nd most popular technology. Capacities vary from 2,000 CFM to 80,000 CFM.  

Diagram showing CO2 airflow through two circular filters with labelled arrows indicating 'Dirty Air' entering the first filter, 'Clean Air' exiting the first filter, 'Dirty Air' entering the second filter, and 'Clean Air' exiting the second filter.

Dual Wheels design is our 3rd popular design. Dual Wheel units include an Enthalpy and Sensible wheel combination for dehumidification purposes. Capacities vary from 2000 CFM up to 30,000 CFM.

Diagram showing air flow through a dual exchanger system with labels indicating heat exhaust air, heat extraction air, fresh air, and heat supply air.

Wheel-Plate design is also popular, very similar to the Dual Wheels design. It includes an Enthalpy wheel and a Sensible plate combination for superior efficiency in dehumidification mode. Capacities vary from 2,000 CFM up to 10,000 CFM