Air-exchange units in Haines High School’s relocated art room that are loud and interfering with teaching need to be replaced, according to facilities director Carlos Jimenez.

Replacing the equipment may cost as much as $303,000, but Jimenez said this week he’d pursue a short-term fix including replacing motors, belts and “vibration isolators,” a less expensive option that might help reduce noise.

Jimenez recently received a report on the units from Murray and Associates, a Juneau…