1. What Is CADR?

Clean Air Delivery Rate (CADR) measures how effectively an air purifier can remove smoke, dust, and pollen from indoor air. It indicates the volume of clean air an air purifier produces per minute.

2. How Does The Calculator Work?

The calculator uses the CADR formula:

Where:

• \( CADR \) — Clean Air Delivery Rate (cubic feet per minute)
• \( A \) — Room area in square feet
• \( 2 \) — Factor for 2 air changes per hour

Explanation: This formula calculates the minimum CADR needed for effective air purification based on room size, assuming 2 complete air changes per hour.

3. Importance Of CADR Calculation

Details: Proper CADR calculation ensures your air purifier is appropriately sized for your room, providing optimal air cleaning efficiency and energy consumption.

4. Using The Calculator

Tips: Enter room area in square feet. The value must be greater than 0. The calculator will determine the required CADR for effective air purification.

5. Frequently Asked Questions (FAQ)

Q1: What does CADR measure?
A: CADR measures an air purifier's effectiveness at removing smoke, dust, and pollen particles from the air, expressed in cubic feet per minute.

Q2: Why 2 air changes per hour?
A: Two air changes per hour is considered the minimum standard for effective air purification in residential settings.

Q3: How do I measure room area?
A: Multiply room length by width in feet. For irregular rooms, divide into rectangles and sum the areas.

Q4: Should I get a higher CADR than calculated?
A: Yes, choosing an air purifier with slightly higher CADR than calculated provides better performance, especially for allergy sufferers.

Q5: Does room height affect CADR requirements?
A: While this calculator uses area, for rooms with high ceilings (over 8 feet), consider calculating room volume and adjusting accordingly.