Coolant Chemistry Determines Whether Your Unit Survives 15 or 20 Years

https://precisionhvacrepairsacramento-licensed-sac-near-super-mark9096.talesignal.com/posts/charge-levels-within-20-percent-of-manufacturer-specs-protect-hvac-efficiency-during-refrigerant-transitions

The refrigerant your central AC unit uses directly governs its lifespan. Systems charged with R-410A typically last 15–20 years, while those still running on R-22 face EPA phase-out constraints that accelerate replacement urgency