Common Issues with Air Handling Units & How to Solve Them
                     Common Issues with Air Handling 
Units & How to Solve Them
HVAC systems depend on Air Handling Units (AHUs) to supply clean, 
conditioned air throughout buildings. To maximize energy efficiency and offer 
a comfortable working and customer environment, organizations should 
maintain optimal AHU performance. Keys to achieve more demanding 
performance levels are heat recovery, humidification and unit control systems 
with advanced logic.
From time to time you will get to see several frequent air handling unit 
problems. It is necessary to understand and address these issues to maintain 
its longevity and efficiency. In this blog you will get all the practical solutions 
of the common issues that keep your unit running smoothly.
1. Inadequate Ventilation
Issue: Common issues you will face with AHUs are blocked ducts, clogged 
filters, and broken fans that can lead to poor airflow. These factors will result 
in inadequate ventilation, higher energy usage, and discomfort among 
building residents.
Solution: Routine maintenance is required to avoid inadequate ventilation. 
Plan a schedule to do routine inspections that will ensure that the fans are 
operating properly, obstructions are cleaned out in the ducts, and check and 
replace the air filters. In the long run, executing a protective maintenance 
plan can help you in saving time and money by identifying and addressing 
possible concerns before they become serious ones.
2. Temperature and Humidity Control Problems
Issue: Inconsistent temperature and humidity levels point outs the issues 
with the dampers, controls, or sensors of the AHU. This can cause discomfort 
to residents and hinder businesses that depend on particular environmental 
circumstances.
Solution: Assess sensors on a regular basis by checking the functionality of 
dampers and control systems. Make sure that humidistats and thermostats 
are installed correctly and operating finely in the designated area. By 
upgrading to modern, smart controls you will access the more accurate 
management of temperature and humidity control. Hence, it enhances the 
overall comfort and system performance.
3. Noise and Vibration
Issue: Excess amount of noise and vibration from AHUs can be troublesome 
during business settings. It can also be a signal of fundamental mechanical 
issues, such as loose parts, worn bearings, or unbalanced fans.
Solution: Do routine checks to replace worn bearings and tighten loose parts. 
Make a fan balance for smooth operation and to reduce vibration. Use 
vibration isolation strategies like installation of rubber mounts to lessen noise 
and enhance the overall workspace comfort.
4. Leaks and Water Damage
Issue: Leakage in the AHU or ductwork can cause water damage, the 
formation of mold, and reduces efficiency. This happens due to failing 
insulation, broken coils, or clogged drain lines.
Solution: Do regular checks and clear drain lines to avoid obstructions. 
Examine coils if they are damaged or need to be replaced or repaired and do 
the same as required. Make sure that all insulation is in place and if any of 
them are worn or damaged then replace it immediately. Execute a moisture 
management plan as it helps to avoid the problems with water and system 
integrity can be preserved.
5. Electrical Issues
Issue: There are several issues that can be caused by AHU malfunction and 
safety risks like faulty wiring, blown fuses, tripped breakers and other 
electrical problems. The reason behind these can be wear and tear, improper 
maintenance or overloading.
Solution: Make sure all the connections are secure and perform routine 
electrical checks. If there is any broken or worn-out wiring and components 
then immediately replace it. For any complicated electrical problems, it is 
recommended to contact a professional electrician as it guarantees safety and 
legal compliance.
Conclusion
In order to provide a cozy and healthy atmosphere, businesses must keep 
their air handling units working at peak efficiency and also keep expenses 
under control. You can resolve the AHU's frequent problems and increase 
system efficiency by planning upgrades, timely repairs, and routine 
maintenance.
Businesses can enhance resident comfort and productivity while also 
attaining considerable cost savings and operational efficiency by proactively 
managing these frequent AHU concerns. Your air handling unit (AHU) will 
continue to be a reliable and efficient part of your HVAC system as long as you 
execute routine air handling unit maintenance and construct smart 
investments in new, energy-saving technology.
                                 Thank You