EPA refrigerant phase-down rules and deadlines for R-410A and the new A2L refrigerants, refrigerant price moves and shortages, new equipment price increases and availability by manufacturer, repair-versus-replace cost benchmarks, contractor certification and A2L handling rules, heat pump and AC rebate and tax credit changes, efficiency standard changes by region, manufacturer recalls and warranty changes, contractor fraud and upsell alerts and emergency repair pricing rules, with the rule, manufacturer or program first and the effect on a typical repair or replacement.