Quick answer
Fresh air ventilation adds a controlled supply of outside air to your home through an energy recovery ventilator (ERV) or a fresh air intake with controls. In Miami, the design must manage humidity, so ventilation is usually paired with proper AC sizing or dehumidification. It lowers CO2, odors and indoor pollutants.
Written by Sylvia Denton, HVAC Guides Editor. Updated 2026-09-22.
Homes built or renovated to modern standards are much tighter than older houses. That saves energy, but without ventilation, CO2, cooking odors and household chemicals build up.
An ERV exchanges stale indoor air with fresh outdoor air and transfers some heat and moisture between the two airstreams, reducing the load on the AC.
In Miami's climate, bringing in outside air without a plan for humidity can make a home damp. We design ventilation together with the AC and dehumidification so it improves comfort rather than hurting it.
