What is the approximate temperature of air provided by air-to-air heat pumps without auxiliary heat?

Air-to-air heat pumps are designed to transfer heat from one location to another, typically extracting heat from the outside air and delivering it inside for heating purposes. The performance of these systems is influenced by outdoor temperatures and the efficiency of the heat pump itself.

In moderate climates, when there is no auxiliary heat source, an air-to-air heat pump can typically deliver air at temperatures around 95°F to 100°F. This temperature allows for effective heating in many residential settings without the need for additional heating elements. The specific air temperature provided can vary slightly based on the model and operating conditions of the heat pump, but the range generally stays close to this mark.

Considering that 100°F falls well within the expected output range for standard air-to-air heat pumps operating under typical conditions, it is the most accurate approximation among the choices given. Thus, a heat pump operating efficiently under these conditions aims to provide comfortable heating while maintaining energy efficiency.