Once the hallmark of high-efficiency ductless equipment, more manufacturers are incorporating inverter-driven compressors into their ducted air-source heat pump (ASHP) offerings. The reasons for this are simple: Inverter technology improves energy efficiency, provides better comfort, and offers quieter operation.
While consumers have responded positively to these newer energy-efficient products, inverter technology is more expensive and, therefore, mainly offered on higher-end heat pumps (and air conditioners). Even though these systems can cost significantly more than non-inverter ASHPs, manufacturers note their higher price tags are more than offset by significantly higher efficiencies.