1. What is CFM Per Ton?

CFM Per Ton is a measurement used in air conditioning systems that represents the amount of airflow (cubic feet per minute) per ton of cooling capacity. It helps HVAC professionals determine the proper airflow for optimal system performance.

2. How Does the Calculator Work?

The calculator uses the CFM Per Ton formula:

Where:

• \( Total CFM \) — Total cubic feet per minute of airflow
• \( Cooling Capacity \) — Cooling capacity in tons

Explanation: This calculation helps determine the airflow efficiency of an AC system relative to its cooling capacity.

3. Importance of CFM Per Ton Calculation

Details: Proper CFM per ton is crucial for efficient AC operation. Most systems operate best between 350-450 CFM per ton. Too low can cause freezing and poor dehumidification, while too high can reduce efficiency and comfort.

4. Using the Calculator

Tips: Enter total CFM (cubic feet per minute) and cooling capacity in tons. Both values must be positive numbers greater than zero.

5. Frequently Asked Questions (FAQ)

Q1: What is the ideal CFM per ton for AC systems?
A: Most residential AC systems are designed for 400 CFM per ton, but the ideal range is typically 350-450 CFM per ton depending on climate and system design.

Q2: Why is CFM per ton important?
A: It ensures proper airflow for efficient heat transfer, adequate dehumidification, and prevents issues like coil freezing or reduced system lifespan.

Q3: How do I measure total CFM?
A: CFM can be measured using an anemometer or calculated by measuring velocity pressure and duct size, or by professional HVAC testing equipment.

Q4: Can CFM per ton vary by climate?
A: Yes, humid climates may benefit from lower CFM per ton (around 350) for better dehumidification, while dry climates may use higher values.

Q5: What if my calculated CFM per ton is outside the recommended range?
A: Consult an HVAC professional to adjust blower speed, check for duct restrictions, or evaluate if system components are properly matched.