Definition
SEER rating tells you how much cooling you get per dollar of electricity. Higher numbers mean more efficient—and lower utility bills. A 16+ SEER system is roughly twice as efficient as a 10 SEER system.
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SEER ratings range from 13 (minimum code) to 25+ (premium efficiency). Minimum code requires 13-14 SEER depending on region. 15+ SEER systems provide noticeably better efficiency and lower operating costs. Energy-efficient systems qualify for federal tax credits and rebates. Older AC units may have 8-10 SEER ratings, costing significantly more to operate. Inspectors note SEER ratings when available to help assess efficiency and replacement value.
Pro Tip
When replacing AC, choose 16+ SEER systems for real savings. Federal tax credits often cover the upgrade cost in just a few years.
Example
An older home had a 9-SEER AC unit, consuming excessive electricity for minimal cooling. Upgrading to a 16-SEER unit cost $4,200 but reduced cooling costs by $50/month—recovering the cost in approximately 7 years.