A dairy cow emits over twice the amount of methane than a beef cow and is by far the highest contributor of all the animals studied. There are also more dairy cows in the UK than beef cattle (1.81 million compared to 1.66 million). All data found from the UK GHG Inventory report 1990-2012.
Angieâs List members in 2014 reported paying an average cost of $5,230 to install a new central air conditioners, with a general price range of $4,425 to $6,025, not counting discounts many service providers offer to Angieâs List members.
1 Mini-split central air conditioner prices average $1,500 to $3,000 installed.  Note that while a high efficiency unit could cost up to 30 to 40 percent more than one with the minimum 13 SEER rating, the extra costs should be recouped in energy savings over the lifetime of the system.