1. What Is Energy Efficiency Rating?

Energy Efficiency Rating (EER) is a ratio that measures the efficiency of cooling devices such as air conditioners and heat pumps. It represents the amount of cooling output (in BTU/h) per unit of electrical energy input (in watts).

2. How Does the Calculator Work?

The calculator uses the EER equation:

Where:

• Cooling Capacity — The amount of heat the system can remove (BTU/h)
• Power Input — The electrical power consumed by the system (W)

Explanation: A higher EER value indicates a more energy-efficient cooling system, as it produces more cooling per unit of electricity consumed.

3. Importance of EER Calculation

Details: EER is crucial for comparing the energy efficiency of different cooling systems, estimating operating costs, and making informed purchasing decisions for energy-efficient appliances.

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, an EER of 10 or higher is considered good for residential air conditioners, with higher values indicating better efficiency.

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

Q3: When is EER typically used?
A: EER is commonly used for rating window units and smaller cooling systems, while SEER is more commonly used for central air conditioning systems.

Q4: Are there limitations to EER?
A: EER provides a snapshot of efficiency at specific conditions and doesn't account for seasonal variations in temperature and humidity.

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 system's efficiency.