Systems and methods for indoor air temperature control for heat pump systems

A heat pump system, comprising:

• an indoor heat exchanger comprising an indoor coil to flow refrigerant therethrough;
• an outdoor heat exchanger comprising an outdoor coil to flow refrigerant therethrough;
• a first sensor configured to detect a value indicative of a temperature of the outdoor coil;
• an indoor fan configured to flow air over the indoor coil;
• a compressor configured to compress the refrigerant that is to be flowed through the indoor coil and the outdoor coil;
• and
• a controller to be coupled to the first sensor, the indoor fan, and the compressor, wherein the controller is configured to:
• determine, during a heating mode, a temperature of the outdoor coil via the first sensor and a speed of the compressor;
• determine, during the heating mode, a target indoor coil temperature based on the temperature of outdoor coil and the speed of the compressor;
• and
• adjust, during the heating mode, a speed of air flowing across the indoor coil based on a difference between the indoor coil temperature and the target indoor coil temperature.

A non-transitory machine-readable medium including instructions that, when executed by a processor, cause the processor to:

• (a) determine, during a heating mode, an outdoor coil temperature of an outdoor heat exchanger and a speed of a compressor of a heat pump system;
• (b) determine, during the heating mode, a target indoor coil temperature of the indoor coil of an indoor heat exchanger of the heat pump system based on the outdoor coil temperature and the speed of the compressor;
• and
• (c) adjust, during the heating mode, a speed of air flowing across the indoor coil based on a difference between a current indoor coil temperature and the target indoor coil temperature.