Operating Costs Rise 40 Percent When HVAC Efficiency Drops Below SEER 16 Standards

https://blogfreely.net/lithilszxt/h1-b-why-compressor-costs-spike-beyond-initial-1-500-4-000-price-tags-when

A new HVAC system for a 2000 square foot house in Sacramento ranges from $4,000 to $12,000 installed, but the real financial exposure emerges over time through energy-waste risk