As part of a routine maintenance program, It is the responsibility of a building owner to maintain their HVAC equipment and insure the entire system is doing its job and running efficiently.
An HVAC system that is neglected will be prone to malfunctions, reduced service life, and loss of proper heating and cooling within the building, and higher energy costs.
Things to look for:
Clogged turning vanes.
Damaged or blocked fire dampers.
Clogged heating and cooling coils.
Damaged or worn fan belts.
Clogged Fans and blowers that can cause the system to not efficiently move the proper air through the system.
Clogged Air Filters not allowing the proper air flow through the system.
Dirty Supply Registers or Return Grills.
Clogged Bathroom Exhaust Grills.