What are the required filter sizes for Johnson Controls Furnace models TG9S'MP and GG9S'MP?
The recommended filter sizes vary based on the CFM and cabinet size. For example, for a CFM of 800, a cabinet size A requires a 16x25 filter on the side and a 14x25 filter at the bottom.
Can filters be installed inside the furnace cabinet?
No, filters must be installed external to the furnace cabinet. Attempting to install filters inside the furnace is not recommended.
What is the maximum air velocity for throwaway type filters?
The maximum air velocity for throwaway type filters is 300 feet per minute (91.4 m/min). High velocity filters are recommended for velocities exceeding this limit.
