Systems and methods for dehumidification, air conditioning, and controlled provision of co2

A method to dehumidify, alternately heat or cool a first space, and provide a controlled amount of CO2 to the first space, the method comprising:

• achieving a temperature for the first space;
• achieving a humidity level for the first space without changing the temperature for the first space;
• and
• achieving a CO2 level for the first space without changing the temperature or the humidity level for the first space.

A control module to control functions to dehumidify, alternately heat or cool a first space, and/or provide a controlled amount of CO2 to the first space, the control module comprising:

• a first microprocessor in electronic communication with a thermostat, a humidistat, and/or a CO2 controller;
• low voltage wiring connecting the control module to a first indoor unit and an outdoor unit;
• and
• a second microprocessor in electrical communication with the first indoor unit, the outdoor unit, and/or the first microprocessor,
• the second microprocessor configured to alter an operational mode of the first indoor unit and/or the outdoor unit in response to at least one signal received from the first microprocessor.