1 70.4% of school staff have seen bullying. 2  62% witnessed bullying two or more times in the last month and 41% witness bullying once a week or more. 13. 3  When bystanders intervene, bullying stops within 10 seconds 57% of the time. 14. 4  Been Cyberbullied 6% of students in grades 6â12 experienced cyberbullying.
Adding central air conditioning to an existing forced-air heating system in a 2,000-square-foot house averages $3,500-$4,000, and can be done by two technicians in 2-3 days, with little or no change to the existing ducting; if ducts must be added, the work time doubles, as does the cost to $7,000-$8,000 or more, according to ThisOldHouse.com .
Split units do not require duct work, while packaged units do. Adding central air conditioning to a home with an existing forced-air heating system in a 2,000-square-foot house averages $3,000 - $4,000. If ducts need to be added, the cost can double, and a split unit is the way to go. As opposed to window units, a ductless system is quieter, and can also heat your home.