CUSTOMER: Full Service Hilton
LOCATION: Las Vegas, NV
AIRREVIVE SERVICE: Fan coil unit refurbishment and re-commissioning
FAN COIL UNITS: Williams ER04WES306D154
Bedroom and Studio Unit Airflow
The graph below is sorted from high to low before EC motor retrofit.
The red line in the graph depicts airflow before the coil rejuvenation and EC motor retrofit. On the left side it begins at 1221 CFM. 66 units were 50% above the manufacturer’s specification on high setting. The red line’s slope down to the right demonstrates that the unit’s CFM before service ranged from 1221 CFM to 295 CFM.
The blue line demonstrates that after service 81% of the unit’s high fan airflow is within 10% of the target airflow of 550 CFM on high setting.
The high velocity of airflow combined with loose parts and components and degrading fiber glass insulation resulted in an average sound level of 58 decibels.
Sound decibels before and after AirRevive service
The graph below is sorted by sound decibels from high to low. The red line from high to low represents sound decibels before service. Decibels were recorded directly in front of the supply vent. 15% of the units recorded 60+ decibels which is above the sound of a typical fan coil unit.
The blue line represents sound decibels after services. The fan coil units’ sound decibels ranged from 58 to 44 decibels, averaging 51 decibels, which is almost silent from the distance of the bed.
Decibels dropped from an average of 13% or 7.2 decibels from 58.2 to 51 decibels.
AirRevive successfully completed the refurbishment by rejuvenating the coils and restoring the cabinet.
Coil temperature dropped allowing the perfect environment for the EC motor retrofit. The coils are working uniformly to achieve maximum efficiency from the EC motor.
The EC motor retrofit enhanced the units’ operation to better than new. The re-commissioned fan coil units:
Guest satisfaction improved by:
The combination of cabinet refurbishment, coil rejuvenation, insulation replacement and the EC motor retrofit resulted in units being brought back to manufacturer’s specification and operating better than new.