Neglecting the 20 Percent Rule Exposes Your HVAC System to Premature Failure

https://precision-hvac-sacramento-crew-sac-near-sutter-park1477.evergrovio.com/posts/deciding-between-repair-and-replacement-saves-thousands-on-ac-service-costs

The 20 percent rule for HVAC states that if your system costs 20 percent or more of a new unit to repair, you face a premature-failure liability that makes replacement the smarter choice