Students in Rancho Cucamonga, too, may also get shivers as the days wind down. Low temperatures in the city usually stand at 13 degrees Celsius in October but dip to 6Â° by December. As student safety is vital to school administrators, it may be prudent for Rancho Cucamonga HVAC experts like those from DayAire to step in with their services. According to Hilsenbeck, the schoolâ¤™s original HVAC system was based around six truck-size blower fans; they were reportedly installed in the 1960s. The machines were, however, expected to last only 25 years. College Director of Communications Maggie Huffman said the blower fansâ¤™ age and deteriorating condition have resulted in hot and cold spots in several sections of the campus.