1. What is SEER2?

SEER2 (Seasonal Energy Efficiency Ratio 2) is the updated standard for measuring air conditioner and heat pump efficiency. It uses new testing conditions with higher external temperature (95°F) and 50% humidity to provide more realistic efficiency ratings in real-world conditions.

2. How Does the Calculator Work?

The calculator uses the SEER2 approximation formula:

Where:

• \( SEER \) — Original SEER rating (BTU/Wh)
• \( SEER2 \) — New SEER2 rating (BTU/Wh)

Explanation: This is an approximation method. For exact SEER2 values, laboratory testing under new conditions (95°F external temperature, 50% humidity) is required.

3. Importance of SEER2 Calculation

Details: SEER2 provides more accurate energy efficiency ratings that reflect real-world performance, helping consumers make better purchasing decisions and understand true operating costs.

4. Using the Calculator

Tips: Enter the original SEER rating in BTU/Wh. The calculator will provide an approximate SEER2 value. Remember this is an estimate - exact values require laboratory testing.

5. Frequently Asked Questions (FAQ)

Q1: Why was SEER2 introduced?
A: SEER2 uses more realistic testing conditions (95°F external temperature, 50% humidity) to better reflect actual performance in warmer climates.

Q2: Is the SEER to SEER2 conversion always accurate?
A: No, the 0.5 reduction is an approximation. Exact conversion varies by equipment model and requires laboratory testing under new conditions.

Q3: When did SEER2 become mandatory?
A: SEER2 standards became effective for new equipment installations starting in 2023 for most regions.

Q4: How do the testing conditions differ?
A: SEER2 testing uses higher external temperature (95°F vs 82°F) and accounts for different static pressure requirements.

Q5: Should I use SEER or SEER2 when buying new equipment?
A: Always refer to SEER2 ratings as they represent the current standard and provide more realistic efficiency expectations.