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HRU – Heat Recovery System for Commercial Kitchens

Sustainable Clean Air Exhaust and Make-Up Air System with Heat Recovery System for Commercial Kitchen Ventilation.

Halton Provides a Truly Integrated System to Optimize Heat Recovery for any Commercial Kitchen Ventilation Application!

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Heat Recovery in commercial kitchens can be a crucial component of your kitchen ventilation system. It allows your heating and make-up air system to operate more efficiently by capturing a portion of the heated kitchen exhaust air and transferring it to the make-up air supply. It lowers the energy required to meet design supply air temperature, saving money on utility costs.

Halton’s PolluStop (PST) and Make-Up Air systems come complete with heat recovery coils and associated controls to provide an integrated system.

View Halton's PolluStop (PST-A) View Halton's Make-Up Air Units


Heat Recovery Systems are recommended for all food service ventilation systems that require pollution control and make up air. These systems are more prevalent in colder climates.

Features and Benefits

  • Recovers heat of kitchen exhaust air to preheat incoming outside air resulting in a significant saving of heating energy for cold climates.
  • Standard coils are provided in both units
  • The pump for the run-around glycol loop is installed in the makeup air unit.
  • Combined with Halton’s M.A.R.V.E.L. demand control kitchen ventilation system for seamless integration of all components and providing feedback on system operation.

Heat Recovery Pairing Selection Chart

System Pairing


Make-Up Air (MUA)

Maximum airflow, CFM
Supply not to exceed, CFM
3000 CFM 3000 2800 2800
4000 CFM 4000 4600 3600
5000 CFM 5000 4600 4600
6000 CFM 6000 8500 5400
8000 CFM 8000 8500 7200
10000 CFM 10000 8500 8500
10000 CFM 10000 12600 9000
12000 CFM 12000 12600 10800

Note: Make-up air CFM should never exceed 90% of total hood exhaust CFM


  • HRU – Heat Recovery System for Commercial Kitchens



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  • Heat Recovery for Commercial Kitchens


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