The energy-efficient Exterios product line from Panasonic rethinks the zone-conditioning aspect of mini-split systems. The ductless air-handler pulls in and conditions fresh air from outside the house, then works with Whisper Green vent fans and minimal ducting in the Total Home Comfort System to pull that conditioned air throughout the home, helping to eliminate hot spots and cold spots. Both models in the Exterios line feature redesigned inverter technology that allows for the change of power supply frequency and constantly adjusts the compressor rotation speed to optimize performance and energy efficiency. Once the set temperature is reached, the inverter continues to operate with minimum power. EcoNavi human-detection technology uses occupancy sensor-style intelligence to monitor and sense when people are in the room and adjust the temperature setting. The Exterios line includes Energy Star-rated 28.5 SEER and 23 SEER systems, and both models can be remotely controlled via wi-fi.