Hum noise when fan starts

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- AlorAir® Sentinel HS35
  
  Capacity
  
  70 PPD at Saturation, 35 PPD@AHAM
  
  Size for
  
  1000 sq.ft
  
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  Gravity drainage
  
  Unit Dimensions
  
  15.35 × 11.2 × 11.4 in
- AlorAir® Sentinel HD35P
  
  Capacity
  
  70 PPD at Saturation, 35 PPD@AHAM
  
  Size for
  
  1000 sq.ft
  
  Draining
  
  Pump drainage/Gravity drain
  
  Unit Dimensions
  
  15.35 × 11.2 × 11.4 in
- AlorAir® Sentinel HD55P
  
  Capacity
  
  120 PPD at Saturation, 55 PPD@AHAM
  
  Size for
  
  1500 sq.ft
  
  Draining
  
  Pump drainage/Gravity drain
  
  Unit Dimensions
  
  17.64 x 11.69 x 11.85in
- AlorAir® Sentinel HD55
  
  Capacity
  
  113 PPD at Saturation, 53PPD@AHAM
  
  Size for
  
  1200 sq.ft
  
  Draining
  
  Gravity Drainage
  
  Unit Dimensions
  
  12.2"D x 19.2"W x 13.3"H
- AlorAir® Sentinel HD55S (Gold)
  
  Capacity
  
  120 PPD at Saturation, 55 PPD@AHAM
  
  Size for
  
  1300 sq.ft
  
  Draining
  
  Gravity Drainage
  
  Unit Dimensions
  
  12.2" D X19.2" W X13.3" H
- AlorAir® Sentinel HD55S (White)
  
  Capacity
  
  120 PPD at Saturation, 55 PPD@AHAM
  
  Size for
  
  1300 sq.ft
  
  Draining
  
  Gravity Drainage
  
  Unit Dimensions
  
  12.2"D x 19.2"W x 13.3"H
- AlorAir® Sentinel HDi65S
  
  Capacity
  
  120 PPD at Saturation, 55 PPD@AHAM
  
  Size for
  
  1300 sq.ft
  
  Draining
  
  Pump drainage/Gravity drain
  
  Unit Dimensions
  
  12.2" D X19.2" W X13.3" H
- AlorAir® Sentinel HDi90 (Build in Pump)
  
  Capacity
  
  198 PPD at Saturation, 90 PPD@AHAM
  
  Size for
  
  2600 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  15.2" D x 23.2" W x 17.7" H
- AlorAir® Sentinel HD90
  
  Capacity
  
  198 PPD at Saturation, 90 PPD@AHAM
  
  Size for
  
  2600 sq.ft
  
  Draining
  
  Gravity Drainage
  
  Unit Dimensions
  
  15.2" D x 23.2" W x 17.7" H
- AlorAir® Sentinel HDi90 (Duct-able)
  
  Capacity
  
  198 PPD at Saturation, 90 PPD@AHAM
  
  Size for
  
  2600 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  15.2" D x 23.2" W x 17.7" H
- AlorAir® Sentinel HDi 100
  
  Capacity
  
  220 PPD at Saturation, 100 PPD@AHAM
  
  Size for
  
  2900 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  14.7" D x 23.8" W x 17.9" H
- AlorAir® Sentinel HDi 120
  
  Capacity
  
  235 PPD at Saturation, 120 PPD@AHAM
  
  Size for
  
  3300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  14.7" D x 23.8" W x 17.9" H
- AlorAir® Storm DP Single -Voltage
  
  Capacity
  
  110 PPD at Saturation, 50 PPD@AHAM
  
  Size for
  
  1300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  14" D x 17" W x 23.1" H
- AlorAir® Storm Ultra
  
  Capacity
  
  190 PPD at Saturation, 90 PPD@AHAM
  
  Size for
  
  2600 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  21.2" D×22" W×38" H
- AlorAir® Storm Elite
  
  Capacity
  
  270 PPD at Saturation, 125 PPD@AHAM
  
  Size for
  
  3000 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  22.3" D×23.6" W×39.7" H
- AlorAir® Storm Pro Dehumidifier
  
  Capacity
  
  180 PPD at Saturation, 85 PPD@AHAM
  
  Size for
  
  2300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  21.2" D×22" W×38" H
- AlorAir® Storm LGR 1250
  
  Capacity
  
  264 PPD at Saturation, 125 PPD@AHAM
  
  Size for
  
  3000 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  26.1" D x15.5" W x17.6" H
- AlorAir® Storm LGR 1250X
  
  Capacity
  
  264 PPD at Saturation, 125 PPD@AHAM
  
  Size for
  
  3000 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  26.1" D x15.5" W x17.6" H
- AlorAir® Storm LGR 850X
  
  Capacity
  
  180 PPD at Saturation, 85 PPD@AHAM
  
  Size for
  
  2300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  21" D×11.6" W ×17.3" H
- AlorAir® Storm LGR 850
  
  Capacity
  
  180 PPD at Saturation, 85 PPD@AHAM
  
  Size for
  
  2300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  21" D×11.6" W ×17.3" H
- AlorAir® Storm LGR Extreme Smart App Control
  
  Capacity
  
  180 PPD at Saturation, 85 PPD@AHAM
  
  Size for
  
  2300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  22.8" D ×13.7" W ×17.3" H
- AlorAir® Storm LGR Extreme (Hot Sale)
  
  Capacity
  
  180 PPD at Saturation, 85 PPD@AHAM
  
  Size for
  
  2300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  22.8" D ×13.7" W ×17.3" H
- AlorAir® PureAiro HEPA Max 970
  
  Built-in UV-C light
  
  Yes
  
  Airflow
  
  270-750 CFM
  
  Size for
  
  1100 sq.ft
  
  Filtration system
  
  MERV-10 filter and HEPA/activated carbon filter
- AlorAir® PureAiro HEPA Max 870
  
  Built-in UV-C light
  
  Yes
  
  Airflow
  
  270-550 CFM
  
  Size for
  
  800 sq.ft
  
  Filtration system
  
  MERV-10 -filter and HEPA/activated carbon filter
- AlorAir® PureAiro HEPA Max 770
  
  Built-in UV-C light
  
  No
  
  Airflow
  
  270-550 CFM
  
  Size for
  
  800 sq.ft
  
  Filtration system
  
  MERV-10 filter and HEPA/activated carbon filter
- AlorAir® PureAiro HEPA Pro 970
  
  Built-in UV-C light
  
  Yes
  
  Airflow
  
  270-750 CFM
  
  Size for
  
  1100 sq.ft
  
  Filtration system
  
  MERV-10 filter and HEPA/activated carbon filter
- AlorAir® PureAiro HEPA Pro 870
  
  Built-in UV-C light
  
  Yes
  
  Airflow
  
  270-550 CFM
  
  Size for
  
  800 sq.ft
  
  Filtration system
  
  MERV-10 filter and HEPA/activated carbon filter
- AlorAir® PureAiro HEPA Pro 770
  
  Built-in UV-C light
  
  No
  
  Airflow
  
  270-550 CFM
  
  Size for
  
  800 sq.ft
  
  Filtration system
  
  MERV-10 filter and HEPA/activated carbon filter
- AlorAir® Cleanshield HEPA 550 (Hot Sale)
  
  Built-in UV-C light
  
  No
  
  Airflow
  
  270-550 CFM
  
  Size for
  
  800 sq.ft
  
  Filtration system
  
  MERV-10 filter and HEPA/activated carbon filter
- Purisystems S1 UVIG Air Scrubber
  
  New Tech
  
  Built-in UV-C light and ionizer
  
  Airflow
  
  200-900 CFM
  
  Size for
  
  1100 sq.ft
  
  Filtration system
  
  Pre-filter and HEPA filter
- Purisystems S1 UV Air Scrubber
  
  Built-in UV-C light
  
  Yes
  
  Airflow
  
  200-900 CFM
  
  Size for
  
  1100 sq.ft
  
  Filtration system
  
  Pre-filter and HEPA filter
- Purisystems S1 Air Scrubber
  
  Built-in UV-C light
  
  No
  
  Airflow
  
  200-900 CFM
  
  Size for
  
  1100 sq.ft
  
  Filtration system
  
  Pre-filter and HEPA filter
- Purisystems HEPA 600 UVIG (Medical Grade)
  
  New Tech
  
  Built-in UV-C light and lonizer
  
  Airflow
  
  270-600 CFM
  
  Size for
  
  800 sq.ft
  
  Filtration system
  
  MERV-10 Filter and HEPA/Activated Carbon Filter
- Purisystems HEPA Pro UVIG (Industrial Grade)
  
  New Tech
  
  Built-in UV-C light and ionizer
  
  Airflow
  
  800-2000 CFM
  
  Size for
  
  2500 sq.ft
  
  Filtration system
  
  MERV-8 Filter and H13 Clapboard Filter
- Purisystems S2 Air Scrubber (Industrial Grade)
  
  Built-in UV-C light
  
  No
  
  Airflow
  
  800-2000 CFM
  
  Size for
  
  2500 sq.ft
  
  Filtration system
  
  Pre-filter and HEPA filter
- Purisystems S2 UV Air Scrubber (Industrial Grade)
  
  Built-in UV-C light
  
  Yes
  
  Airflow
  
  800-2000 CFM
  
  Size for
  
  2500 sq.ft
  
  Filtration system
  
  Pre-filter and HEPA filter
- Purisystems S2 UVIG Air Scrubber (Industrial Grade)
  
  New Tech
  
  Built-in UV-C light and ionizer
  
  Airflow
  
  800-2000 CFM
  
  Size for
  
  2500 sq.ft
  
  Filtration system
  
  Pre-filter and HEPA filter
- AlorAir® Purecare 1350
  
  Built-in Ionizer
  
  No
  
  AirFlow
  
  1050-1350 CFM
  
  Sound Pressure Level
  
  69 DBA
  
  Filters
  
  4 X MERV-11
- AlorAir® Purecare 1350IG
  
  Built-in Ionizer
  
  Yes
  
  AirFlow
  
  1050-1350 CFM
  
  Sound Pressure Level
  
  69 DBA
  
  Filters
  
  4 X MERV-11
- Purisystems Puricare 1100
  
  Built-in lonizer
  
  No
  
  AirFlow
  
  1100 CFM
  
  Sound Pressure Level
  
  66 DBA
  
  Filters
  
  5-Micron Filter (Outer), 1-Micron Filter (Inner)
- Purisystems Puricare 1100IG
  
  Built-in lonizer
  
  Yes
  
  AirFlow
  
  1100 CFM
  
  Sound Pressure Level
  
  66 DBA
  
  Filters
  
  5-Micron Filter, 1-Micron Filter
- Purisystems Puricare 500
  
  Built-in lonizer
  
  No
  
  AirFlow
  
  500 CFM
  
  Sound Pressure Level
  
  61 DBA
  
  Filters
  
  5-Micron Filter, 1-Micron Filter
- Purisystems Puricare 500IG
  
  Built-in lonizer
  
  Yes
  
  AirFlow
  
  500 CFM
  
  Sound Pressure Level
  
  61 DBA
  
  Filters
  
  5-Micron Filter (Outer), 1-Micron Filter (Inner)
- AlorAir® Zeus Extreme Axial Air Mover
  
  Air Flow
  
  3000cfm
  
  Power
  
  2.3 Amps
  
  Speed Control
  
  2-Speed Control
  
  Unit Dimensions
  
  20.1" D x 20.1" W x 16.1" H
- AlorAir® Zeus 900 Air Mover
  
  Air Flow
  
  950 CFM
  
  Power
  
  1.8 Amps
  
  Speed Control
  
  8-Speed Control
  
  Unit Dimensions
  
  21.6" D x17.3" W x9.8" H
- AlorAir® Storm SLGR 850X
  
  Capacity
  
  180 PPD at Saturation, 85 PPD@AHAM
  
  Size for
  
  2300 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  21" D×11.6" W×17.3" H
- AlorAir® Storm SLGR 1250X
  
  Capacity
  
  264 PPD at Saturation, 125 PPD@AHAM
  
  Size for
  
  3000 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  26.1" D×15.5" W×17.6" H
- AlorAir® Sentinel SLGR 1400X
  
  Capacity
  
  275 PPD at Saturation, 140 PPD@AHAM
  
  Size for
  
  3800 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  33.9" D×18.1" W×19.3" H
- AlorAir® Storm SLGR 1600X
  
  Capacity
  
  275 PPD at Saturation, 160 PPD@AHAM
  
  Size for
  
  4000 sq.ft
  
  Draining
  
  Pump Drainage
  
  Unit Dimensions
  
  31.9" D ×20" W ×18" H
- AlorAir® Ventirpro 720
  
  Power
  
  115 V 60 Hz; 0.7 A
  
  AirFlow
  
  720 CFM
  
  Material
  
  Galvanized Sheet
  
  Operating Humidity
  
  5 to 80% RH
- AlorAir® Ventirpro 540
  
  Power
  
  115 V 60 Hz; 0.51 A
  
  AirFlow
  
  540 CFM
  
  Material
  
  Galvanized Sheet
  
  Operating Humidity
  
  5 to 80% RH
- AlorAir® Ventirpro 260
  
  Power
  
  115 V 60 Hz; 0.25 A
  
  AirFlow
  
  260 CFM
  
  Material
  
  Galvanized Sheet
  
  Operating Humidity
  
  5 to 80% RH
- AlorAir® VentirMax 780SD
  
  Power
  
  115 V/ 60 Hz, 0.65 A
  
  AirFlow
  
  780 CFM
  
  Operation
  
  Button
  
  Operating Humidity
  
  1 to 99% RH
- AlorAir® VentirMax 570SD
  
  Power
  
  115 V/ 60 Hz, 0.52 A
  
  AirFlow
  
  570 CFM
  
  Operation
  
  Button
  
  Operating Humidity
  
  1 to 99% RH
- AlorAir® VentirMax 300SD
  
  Power
  
  115 V 60 Hz; 0.38 A
  
  Airflow
  
  300 CFM
  
  Operation
  
  Button
  
  Operating Humidity
  
  1 to 99% RH
- AlorAir® VentirPro-S2
  
  Power
  
  100 to 230V AC, 0.8A
  
  Airflow
  
  0-240 CFM (Air-out)
  
  Noise
  
  0-48 dBA
  
  Operating Humidity
  
  20 to 100% RH
- AlorAir® VentirPro 260S
  
  Power
  
  115 V 60 Hz; 0.25 A
  
  AirFlow
  
  260 CFM
  
  Material
  
  Stainless Steel
  
  Operating Humidity
  
  5 to 80% RH
- AlorAir® VentirPro 540S
  
  Power
  
  115 V/ 60 Hz, 0.51 A
  
  Airflow
  
  540 CFM
  
  Material
  
  Stainless Steel
  
  Operating Humidity
  
  5 to 80% RH
- AlorAir® VentirPro 720S
  
  Power
  
  115 V/ 60 Hz, 0.7 A
  
  Airflow
  
  720 CFM
  
  Material
  
  Stainless Steel
  
  Operating Humidity
  
  5 to 80% RH
- AlorAir® VentirMax 300S
  
  Power
  
  115V/60 Hz, 0.38 A
  
  Airflow
  
  300 CFM
  
  Operation
  
  Knob
  
  Operating humidity
  
  10-80%
- AlorAir® VentirMax 570S
  
  Power
  
  115V/60 Hz, 0.52 A
  
  Airflow
  
  570 CFM
  
  Operation
  
  Knob
  
  Operating humidity
  
  10-80%
- AlorAir® VentirMax 780S
  
  Power
  
  115V/60 Hz, 0.65 A
  
  Airflow
  
  780 CFM
  
  Operation
  
  Knob
  
  Operating humidity
  
  10-80%
- AlorAir® MaxFireDry 200
  
  Heat Output
  
  20,000 BTUs
  
  Airflow
  
  250 CFM
  
  Size for
  
  Up to 430 Sq.Ft.
  
  Features
  
  PTC heating wires and Remote Control
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Hum noise when fan starts

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The HD90 is about 8 months old now. it is suspended from basement rafters and leveled. It has started to make a loud 'Hum' noise when the fan starts that can be heard throughout the house. Fortunately, the Hum stops after two seods but i am concerned it may get worse. Waht can be done to stop the noise?

Hum noise

Asked on Aug 23, 2022 - 08:05:09am

Eric

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Answers

Alorair

We apologize for any inconvenience caused to you. Please open the machine shell and check whether the screws of the fan are loose and whether the wind wheel is contacted by foreign objects or wires. If there is no such situation, we think there should be a problem with the motor itself, and you can apply for a new fan.

Eric

Thank you for the very quick response!

To clarify, does 'machine shell' mean the central metal housing and/or the plastic end piece covering the back of the fan?

Alorair

Yes. If you have any questions, please feel free to contact us.

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