1. What is Energy Efficiency Rating?

Energy Efficiency Rating (EER) is a ratio that measures the cooling capacity of an air conditioning or refrigeration system relative to its power consumption. It's calculated by dividing the cooling capacity (in BTU/h) by the power input (in watts).

2. How Does the Calculator Work?

The calculator uses the EER formula:

Where:

• Cooling Capacity — Measured in British Thermal Units per hour (BTU/h)
• Power Input — Measured in watts (W)

Explanation: The EER represents how many BTUs of cooling you get for each watt of electricity consumed. Higher EER values indicate more efficient systems.

3. Importance of EER Calculation

Details: EER is crucial for evaluating the energy efficiency of cooling systems, helping consumers make informed purchasing decisions and estimate operating costs. Higher EER ratings typically mean lower electricity bills for the same cooling output.

4. Using the Calculator

Tips: Enter the cooling capacity in BTU/h and power input in watts. Both values must be positive numbers. The calculator will compute the EER ratio in BTU/h per watt.

5. Frequently Asked Questions (FAQ)

Q1: What is a good EER rating?
A: Generally, EER ratings above 10 are considered good, with higher numbers indicating better efficiency. Modern high-efficiency units can have EER ratings of 12 or higher.

Q2: How does EER differ from SEER?
A: EER measures efficiency at a specific operating condition (usually 95°F), while SEER (Seasonal Energy Efficiency Ratio) measures efficiency over an entire cooling season with varying temperatures.

Q3: When is EER typically used?
A: EER is commonly used for rating room air conditioners, while SEER is more commonly used for central air conditioning systems.

Q4: Can EER values be compared across different types of cooling systems?
A: Yes, EER provides a standardized way to compare the efficiency of different cooling systems regardless of their type or size.

Q5: How does EER affect operating costs?
A: Systems with higher EER ratings consume less electricity to provide the same cooling output, resulting in lower operating costs over time.