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 .
Specifications. Perhaps the first step to determining the cost of replacing a central air conditioning unit is evaluating the specifications necessary for the size and dimensions of your home. Decide if your current unit adequately cools your entire home or if you require a larger unit.or example, at the time of publication, the Central Air Conditioning Prices website rates a 1.5-ton, 18,000 Btu air conditioning unit and coil at $710, while a 5-ton, 60,000 Btu unit and coil is listed at $1,640, excluding installation.