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SEER Formula:
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SEER (Seasonal Energy Efficiency Ratio) is a measure of air conditioning and heat pump cooling efficiency. It represents the ratio of cooling output (in BTU) divided by energy input (in watt-hours) over a typical cooling season.
The calculator uses the SEER formula:
Where:
Explanation: Higher SEER ratings indicate more efficient systems that provide more cooling per unit of energy consumed.
Details: SEER rating is crucial for evaluating energy efficiency of cooling systems, estimating operating costs, and making informed purchasing decisions. Higher SEER systems typically have lower operating costs but may have higher upfront costs.
Tips: Enter cooling output in BTU and energy consumption in watt-hours. Both values must be positive numbers. The calculator will compute the SEER rating (BTU per watt-hour).
Q1: What is a good SEER rating?
A: Modern systems typically range from 13 to 25 SEER. Higher numbers indicate better efficiency. The minimum standard in the US is 13-14 SEER depending on region.
Q2: How much can I save with a higher SEER rating?
A: Each point increase in SEER rating can reduce cooling costs by about 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 systems are more efficient, they also cost more. The optimal choice depends on your climate, usage patterns, and how long you plan to stay in your home.
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 outdoor temperature (95°F).
Q5: Do all regions require the same minimum SEER?
A: No, minimum SEER requirements vary by region. Northern states typically have lower minimum requirements than southern states with longer cooling seasons.