Energy audits conducted across 200 workshops in 2024 show that replacing shaded-pole blowers with single-phase dual-capacitor induction motors cuts kWh by 35 %. The upgrade stems from superior power-factor correction provided by the permanent run capacitor, which offsets reactive power drawn from the grid. High-grade electrical steel M19 reduces core losses to 18 W/kg at 1.5 T, while optimized rotor bar geometry minimizes stray-load losses. Laboratory dynamometer tests reveal 82 % peak efficiency at 3 hp, outperforming standard capacitor-start units by 8 %. Soft-start circuitry gradually engages the start capacitor, slashing inrush current from 45 A to 22 A, thus avoiding nuisance breaker trips. VFD retrofit kits enable variable-speed operation without derating, ideal for HVAC fan-coil units. Annual savings calculations, assuming 2 000 operating hours at €0.12 per kWh, yield €86 per motor, paying back incremental cost in 14 months. The single-phase dual-capacitor induction motor therefore offers a pragmatic path to green-building credits and reduced carbon footprints.