1. What is SEER?

SEER (Seasonal Energy Efficiency Ratio) is a measure of the cooling efficiency of air conditioners and heat pumps. It represents the ratio of cooling output (in BTU) to energy input (in watt-hours) over a typical cooling season.

2. How Does the Calculator Work?

The calculator uses the SEER formula:

Where:

• Cooling Capacity — Measured in British Thermal Units per hour (BTU/h)
• Power Input — Measured in Watts (W)

Explanation: Higher SEER ratings indicate more efficient systems that provide more cooling output per unit of energy consumed.

3. Importance of SEER Rating

Details: SEER ratings help consumers compare the energy efficiency of different HVAC systems. Higher SEER units typically have lower operating costs and reduced environmental impact, though they may have higher upfront costs.

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 SEER rating, which is expressed in BTU per watt-hour.

5. Frequently Asked Questions (FAQ)

Q1: What is a good SEER rating?
A: Modern HVAC systems typically have SEER ratings between 13 and 25. Higher numbers indicate better efficiency. The minimum SEER rating allowed in the US is 13-14 depending on region.

Q2: How much can I save with a higher SEER unit?
A: Each point increase in SEER rating can reduce cooling costs by approximately 5-7%, though actual savings depend on climate, usage patterns, and electricity rates.

Q3: Is a higher SEER rating always better?
A: While higher SEER units are more efficient, they also cost more. The optimal SEER rating depends on your climate, how often you use your AC, and your budget.

Q4: How is SEER different from EER?
A: SEER measures seasonal efficiency under varying conditions, while EER (Energy Efficiency Ratio) measures efficiency at a specific temperature (95°F outdoors). SEER is generally a better indicator of real-world performance.

Q5: Do all regions require the same minimum SEER?
A: No, minimum SEER requirements vary by region. The US is divided into three regions with different minimum efficiency standards, with hotter southern regions requiring higher minimum SEER ratings.