1. What is Energy Efficiency Ratio (EER)?

The Energy Efficiency Ratio (EER) is a measure of how efficiently a cooling system operates. It represents the ratio of cooling capacity (in BTU/h) to power input (in watts). Higher EER values indicate more efficient systems.

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 equation calculates the energy efficiency by dividing the cooling output by the electrical power input.

3. Importance of EER Calculation

Details: EER is crucial for evaluating the energy efficiency of air conditioning and refrigeration systems. It helps consumers compare different systems and make informed purchasing decisions based on energy consumption and operating costs.

4. Using the Calculator

Tips: Enter cooling capacity in BTU/h and power input in watts. Both values must be positive numbers greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a good EER rating?
A: Generally, an EER of 10 or higher is considered good for residential air conditioners. Higher EER values indicate better energy efficiency.

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

Q3: When is EER typically used?
A: EER is commonly used for rating window units, portable ACs, and commercial HVAC systems where operating conditions are more constant.

Q4: Are there limitations to EER?
A: EER provides a snapshot of efficiency at specific conditions and may not reflect seasonal performance variations that SEER accounts for.

Q5: How can I improve my system's EER?
A: Regular maintenance, proper sizing, clean filters, and upgrading to more efficient components can help improve your system's EER.