Answer :
Final answer:
Air cleaners are often installed ahead of heating or cooling coils and air conditioners in HVAC (Heating, Ventilation, and Air Conditioning) systems.
Explanation:
Air cleaners are installed ahead of heating or cooling coils and air conditioners to remove polluting particles, irritants, and allergens from the air. Large electrostatic precipitators, which are also used industrially, can remove over 99% of the particles from stack gas emissions.
These home precipitators rely on the electrostatic part of the process to charge the particles in the air and attract and collect them on oppositely charged grids.
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