Heat pumps can extract heat from air and water and are nearly always used to both heat and cool a building very efficiently and economically.
The volume or flow rate of refrigerant is accurately matched to the required heating or cooling loads thereby saving energy and providing more accurate control.
In short, they are probably the best systems currently available for mid to large applications.
Another common cause is blocked air filters, so check they are clean and are regularly kept clean. It helps to refer to the manufacturers operating instructions as well.
If all else fails and you are still having a problem, contact our service department.
To simply explain, relate this to a car which like air conditioning has many rotating and wearing parts, your warranty will not be honoured if you don’t have regular servicing (maintenance).
Comfort cooling mainly relates to provision of just cooling to improve comfort.
Close control air conditioning is really as the name implies, both temperature, humidity and air cleanliness are closely controlled and often to fine tolerances if necessary.