But installing central air is easier and less costly than you might think. When added to an existing forced-air heating system, central air for a 2,000-square-foot home costs $3,500 to $4,000 and can be done by two technicians in two to three days, often with little or no change to the ducting. For a house that needs ducts, the costs and work time double.
Connect to Bluetooth on Kindle Fire HD. You can pair your Kindle Fire HD with wireless devices that use Bluetooth technology, such as speakers or keyboards. Help for Kindle Fire HD 7 (2nd Generation) and Kindle Fire HD 8.9 (2nd Generation). Note: Kindle Fire (2nd Generation) cannot connect to Bluetooth accessories.
Bluetooth 3.0 + HS (High Speed) establishes the connection via Bluetooth but transfers data over Wi-Fi. Version 4 added Bluetooth Low Energy (BLE). Branded as Bluetooth Smart, BLE uses only a quarter of the power at 1 Mbps, and devices can transmit for years on watch batteries (see Bluetooth LE).