1. What is Energy Efficiency Ratio?

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), providing an indication of the system's energy efficiency.

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 higher the EER rating, the more energy efficient the cooling system is. A higher EER means the system provides more cooling output per unit of electrical energy consumed.

3. Importance of EER Calculation

Details: EER is crucial for evaluating the energy efficiency of air conditioning systems, heat pumps, and other cooling equipment. It helps consumers compare different models 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 outdoor temperature (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 window units, portable ACs, and commercial cooling systems where operation at peak conditions is more relevant than seasonal performance.

Q4: Are there limitations to EER?
A: EER only measures efficiency at one specific operating condition and doesn't account for seasonal variations in temperature and humidity that affect overall energy consumption.

Q5: How can I improve my system's EER?
A: Regular maintenance, proper sizing, clean filters, and adequate insulation can help maintain or improve your cooling system's energy efficiency ratio.