Air Quality research
What is CADR
What is CADR explained with source boundaries, specification context, and BenchPicked methodology notes.
Written by BenchPicked Editorial Team · Sources checked May 16, 2026
Decision answer
Bottom line
CADR, or Clean Air Delivery Rate, is a published airflow metric used to compare how quickly room air cleaners move filtered air for dust, smoke, and pollen.
- For
- people choosing a room air cleaner for a defined room and operating routine
- Decision
- use what is cadr to make a product decision without overreading promotional claims
- Context
- matching cleaned-air delivery, noise, filter upkeep and room conditions
Decision matrix
Read each published value in the context of the decision it can actually support.
| Factor | Published information | How to use it |
|---|---|---|
| Overview | CADR, or Clean Air Delivery Rate, is a published airflow metric used to compare how quickly room air cleaners move filtered air for dust, smoke, and pollen. | Apply this step to the exact product, room, device or purchase terms being compared. |
| Review boundary | BenchPicked separates general background information from product performance claims. | Apply this step to the exact product, room, device or purchase terms being compared. |
Claim and evidence record
contextual guidance
CADR, or Clean Air Delivery Rate, is a published airflow metric used to compare how quickly room air cleaners move filtered air for dust, smoke, and pollen.
Apply the cited guidance to the exact product documentation; it is not a product-performance finding.
EPA guide to air cleaners in the homeWhen another option is the better fit
A higher-CADR purifier
Choose this when the room is larger or faster air cleaning matters more than size.
A quieter compact purifier
Choose this when night use and close placement matter more than peak airflow.
Source control or ventilation
Choose this when the pollutant source can be removed instead of filtered.
Decision support
Fit and ownership checks
Fits when
- Readers matching this audience: people choosing a room air cleaner for a defined room and operating routine
- Decisions that require this task: use what is cadr to make a product decision without overreading promotional claims
- Use in this stated context: matching cleaned-air delivery, noise, filter upkeep and room conditions
Complete before comparing total cost
- Current device price, shipping region, and availability
- Required accessories, consumables, or paid services
- Warranty, return window, and seller-specific exclusions
- Any unpublished recurring cost needed for a like-for-like ownership comparison
Sources used for this decision
- EPA guide to air cleaners in the home: Government record used for the published facts on this page.
- AHAM Verifide room air cleaner directory: Industry Standard record used for the published facts on this page.
Evidence boundary: this module compares cited published information. It does not add first-hand measurements or infer results outside the stated source conditions.
Product example
Apply these criteria to Levoit Core 300S: CADR, Room Fit, Noise, and Filter Costs
Use this approved product option as a concrete example while applying the criteria on this page. Confirm its published specifications and current seller terms before ordering.
Read the product researchResearch details
Overview
CADR, or Clean Air Delivery Rate, is a published airflow metric used to compare how quickly room air cleaners move filtered air for dust, smoke, and pollen.
Review boundary
BenchPicked separates general background information from product performance claims.
How to use CADR
Match the pollutant-specific CADR field, room size, and intended fan setting. A single coverage headline cannot replace smoke, dust, and pollen values measured under a named method.
Comparison calculation
Compare products in the same unit and pollutant column. Record missing CADR as unknown rather than estimating it from room coverage or filter type.
Buying decision
Use CADR to narrow the set, then compare noise, replacement-filter availability, power use, and purchase terms for the operating speed you expect to use.
Source notes
- EPA Guide To Air Cleaners In The Home · Government · Checked May 16, 2026
- AHAM Verifide Room Air Cleaner Directory · Industry Standard · Checked May 16, 2026
Questions
What does CADR mean?
CADR means Clean Air Delivery Rate, a room air cleaner metric reported separately for dust, smoke, and pollen.
Why do dust, smoke, and pollen CADR numbers differ?
The numbers can differ because each particle category is measured separately, so a product can perform differently across particle sizes.
Is CADR the same as room coverage?
No. CADR is an airflow performance metric, while room coverage is a manufacturer or standards-based room-size estimate.
Before you buy
Recheck fit and current terms
Compare Levoit Core 300S: CADR, Room Fit, Noise, and Filter Costs with the criteria on this page, then confirm the current seller terms.
How BenchPicked separates published facts, analysis, and evidence limits