Renovation-Headquarters Banner

Noise Control

Indoor Appliances

Furnace, Dishwasher, Washing Machine, Ventilation Fans

Problem: Noisy ventilation equipment.

Cause: Fan equipment

Solutions: Reduce transmission to other rooms.

  • Use a better quality fan. Fans with low sone (noise rating) values are generally quieter.

Additional information on fan noise

Cause: Ducts carry sound


  • Install flexible couplings between the ducts and the ventilation equipment.

Cause: Ventilation equipment connected directly to the building's structure.


  • Avoid connecting the equipment directly to the structure. Mount the equipment, heat recovery ventilator (HRV) or fan on vibration isolation blocks - rubber blocks or springs, as shown in Figures 1 & 2, available from most heating/appliance distributors, as well as online at (click on banner below article).

Floor mount vibration isolator

Figure 1 - Floor mount vibration isolator

Floor mount, spring, vibration isolator

Figure 2 - Floor mount, spring, vibration isolator