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 .
The price to install central air conditioner units with heating unit is between $6,500 and $15,000. The HVAC installation costs are for complete heating and cooling system and labor cost.To get little more accurate price in your area, check out the links below.f we paid HVAC contractor $5,700.00 to replace central air conditioner units with furnace I would said that good deal. Central air cost with duct work. To install central air conditioner units with duct work is between $10,000 and $15,000 or more. There are some areas that will charge less.