Since air pollution has been an off-and-on problem in the past, fresh air systems are increasingly more common. These units provide filtered outdoor air through the system and expel diluted air, and other contaminants, to the environment, ensuring clean, healthy indoor air quality. But one question that comes up fairly often is this: should a fresh air system be left on 24/7?
Why Continuous Operation Matters
The answer is yes, you want that system running 24/7. This is not only counter to opening windows, which would allow secondhand pollution inside, but can also help ensure a steady supply of clean, oxygenated air 24-hour fresh air cycle to family members, as in a “forest oxygen bar”.
Bad outdoor air can affect indoor air quickly as well. A new air system slowly dilutes indoor pollutants by introducing filtered fresh air and flushing out harmful gases. Your air purifier works similarly; it requires a few hours to do its job and reach maximum air quality, just as dunking a clean cup into a cup of dirty water doesn’t instantaneously clean the dirty water. Frequent interruptions only increase the workload of the system and make it less effective.
Energy Use and Practical Considerations
Modern fresh air systems are designed to use very little energy. Even running 24 hours a day, they are far less energy intensive than central air conditioning. The small added costs of power are usually worth it for healthier indoor air.
During extended time away, users can shut the system down for a while and turn it back on through remote control hours before arriving home. That way fresh, clean air is waiting for you when you arrive, without sucking your home dry.
Learn about efficient fresh air systems here: Eco Pair Plus Single Room Energy Recovery Ventilator
Post time: Aug-20-2025
