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Kitchen or Bath Fans Allow Cold Air Infiltration or Drafts
Acceptable Performance/Condition Kitchen and bath exhaust fans shall be installed with backdraft dampers as per manufacturers specifications. Warranty One-Year Work and Materials Damage resulting from improper maintenance or additions, deletions or alterations made by the homeowner is excluded from the warranty. Action Kitchen and/or bath exhaust fans not meeting the acceptable condition shall be repaired. Remarks Because they are connected to the exterior by a duct, ventilation fans are indirectly open to outside air. Even though these types of fans come equipped with dampers, they are not completely effective at eliminating cold air infiltration. Sometimes they can become obstructed and not close fully. As part of regular home maintenance, vent terminations on exterior walls should be inspected periodically to ensure the openings are not obstructed (e.g. by birds or other animals). |