Abstract: An air-to-air heat pump system for a heating, ventilation and air conditioning (HVAC) system for a building includes a thermally insulated cool channel for pumping external air into the building, the cool channel having a volume for mixing external air with exhaust air of the building, a warm channel for pumping internal air, the warm channel including a cellular humidifier that restores humidity to internal air, heat pump coils located in the cool channel and the warm channel, the heat pump coils configured for transferring thermal energy from the cold channel to the warm channel, a first fan located in the cool channel and a second fan located in the warm channel, wherein the first and second fans are configured for moving air within a channel, all of the foregoing provided in a monoblock or Split structure located inside, or partially inside, a thermal circuit of the building.

Abstract: An air-to-air heat pump system for a heating, ventilation and air conditioning (HVAC) system for a building includes a thermally insulated cool channel for pumping external air into the building, the cool channel having a volume for mixing external air with exhaust air of the building, a warm channel for pumping internal air, the warm channel including a cellular humidifier that restores humidity to internal air, heat pump coils located in the cool channel and the warm channel, the heat pump coils configured for transferring thermal energy from the cold channel to the warm channel, a first fan located in the cool channel and a second fan located in the warm channel, wherein the first and second fans are configured for moving air within a channel, all of the foregoing provided in a monoblock or Split structure located inside, or partially inside, a thermal circuit of the building.