US Defense Secretary James Mattis is in Kabul, Afghanistan Mattis is visiting Resolute Support HQ and meeting Afghanistan's President (CNN)US Secretary of Defense James Mattis has arrived in Afghanistan, where he is meeting government officials including President Ashraf Ghani. Mattis underscored at a news conference Monday that the purpose of his visit was to help inform his recommendations on America's strategy in Afghanistan moving forward, but he declined to share what those recommendations might be.
Central Air Average Costs. The actual cost of central air installation depends on a number of factors, including the size of the home as well as the unitâs tonnage and SEER rating. 1  In a 2,000 square foot home with existing ductwork, central air conditioning costs $3,000 to $5,000 installed. In a 2,000 square foot home with existing ductwork, central air conditioning costs $3,000 to $5,000 installed. 2  If ductwork is additionally required, costs could reach $6,000 to $10,000 or more.
Typical costs: 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 .