1. What is Energy Efficiency Rating?

Energy Efficiency Rating (EER) measures how efficiently a house uses energy by comparing energy input to energy loss. It provides a percentage rating that indicates the overall energy performance of a building.

2. How Does the Calculator Work?

The calculator uses the EER formula:

Where:

• \( Input \) — Total energy input to the house (kWh)
• \( Loss \) — Energy loss from the house (kWh)

Explanation: The equation calculates the percentage of input energy that is effectively used, with higher percentages indicating better energy efficiency.

3. Importance of EER Calculation

Details: Calculating energy efficiency rating is crucial for assessing building performance, identifying energy waste, planning energy-saving improvements, and reducing utility costs.

4. Using the Calculator

Tips: Enter energy input and energy loss in kWh. Energy loss must be less than or equal to energy input. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What is a good EER rating for a house?
A: Generally, an EER above 80% is considered good, while ratings above 90% indicate excellent energy efficiency.

Q2: How can I improve my home's EER?
A: Improve insulation, upgrade windows, seal air leaks, use energy-efficient appliances, and install smart thermostats.

Q3: How often should EER be calculated?
A: It's recommended to calculate EER annually or after major energy efficiency improvements to track performance.

Q4: Does EER account for renewable energy?
A: Yes, if renewable energy sources are part of your energy input, they should be included in the total input calculation.

Q5: What's the difference between EER and Energy Star rating?
A: EER is a simple percentage calculation, while Energy Star is a certification program with specific standards for different products and buildings.