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- 04:19, 30 December 2025 Arthuswtae talk contribs created page HVAC System Lifespan vs. Efficiency: When to Upgrade 65321 (Created page with "<html><p> HVAC decisions are rarely tidy. I have sat at kitchen tables with homeowners staring at a repair estimate that feels too big for a machine that still hums along most days. I have also been on rooftops with facility managers who squeezed one more cooling season from a twenty-year-old unit only to watch utility costs swallow the savings. Balancing the remaining lifespan of your system against the efficiency gains of a replacement is less about a single number and...")
- 04:19, 30 December 2025 User account Arthuswtae talk contribs was created
