Common faults and warning signs
- Indoor humidity rises unexpectedly
- Fresh-air volume feels low or unbalanced
- Filters load quickly or coils ice
- Water carryover, drain overflow or fan vibration
All services
Air systems
FAHU (Fresh Air Handling)
Keep conditioned fresh air moving reliably with checks across filtration, cooling, humidity control, fans, dampers and drainage.
The equipment
How the system does its job.
A fresh air handling unit filters and conditions outdoor air before introducing it to occupied spaces or the wider HVAC system. In hot, humid conditions, coil performance, condensate management, filtration and controlled airflow all affect comfort and indoor humidity.
Diagnosis before decisions
Read the warning signs. Test the cause.
What we inspect or repair
- Outdoor-air intake, filters and dampers
- Cooling coil and temperature difference
- Fan, motor, belt and vibration condition
- Drain tray, trap and condensate line
- Humidity sensors, actuators and control sequence
A clear service process
From symptom to stable operation.
Measurements guide the repair scope. After the agreed work, operation is checked again against the original symptom.
- 01
Review
Confirm occupancy schedule, humidity concern and airflow demand.
- 02
Inspect
Trace the outdoor-air path, cooling and condensate removal.
- 03
Correct
Complete approved cleaning, mechanical or control repairs.
- 04
Confirm
Verify airflow, discharge temperature and humidity response.
Where it fits
Built around the real application.
- Hotels and restaurants
- Offices and retail
- Healthcare and education
- Commercial buildings
Preventive maintenance guidance
- Inspect outdoor-air filters more often during dusty conditions.
- Keep coil surfaces, drain trays and traps clean.
- Check damper travel and humidity-sensor readings as part of planned service.
Ready when you are
Tell us what the system is doing.
Share the equipment, symptoms and location. We’ll use that information to help define the next step.
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