Definition
A whole-home air cleaner is filtration or air-cleaning equipment built into a forced-air system so it treats all the air the blower moves. Common types are deep-pleated media cabinets that hold 4- or 5-inch filters and electronic air cleaners. EPA notes in-duct air cleaners only work while the system fan is running.
Also called: Whole-house air purifier, Media air cleaner, Media filter cabinet
Why it matters to you.
For Central Kentucky households dealing with pollen seasons, pets, dust or asthma, a media cabinet lets the system use a higher-MERV filter with more surface area than a 1-inch slot. It only helps if the blower can move enough air through it, so airflow and duct leaks come first.
Practical guidance.
Start with the right filter for your blower, then consider whole-home equipment if allergies, pets or dust still demand it. Homeowners can change media filters on the manufacturer's schedule; sizing, installation and static pressure checks are technician work, and avoid air cleaners that intentionally produce ozone.
About this definition
Written by the Feistritzer Heating & Air Conditioning team — family owned and operated in Danville since 1976, Kentucky HVAC license M02584. Definitions inform; a whole-system diagnosis in your home decides.