The district moved forward with an invitation for bid and received a bid from UNI-Tech for $413,770. According to district records, that bid was higher than anticipated, so the district went to McCarthy Builders for the same scope of work, and the company came back with a price tag of $349,473. Both amounts were supplied to the Arizona School Facilities Board, the entity that will decide which option to select and foot the bill, according to district officials. A cooling tower is used to cool the circulating water in the heating, ventilation and air conditioning system.
The cooling towers are both more than 20 years old, according to the district.