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.
Generally, the sizes of air conditioners are between 1.5 and 5 tons. You can determine the right air conditioner size for your home by hiring an HVAC contractor to do a load calculation. The following air conditioner prices include AC and coil installation: 1  1.5 tons and 18,000 BTU â $1,475.2  2 tons and 24,000 BTU â $1,990.he higher the rating, the more energy efficient the unit is. Air conditioner prices can vary significantly depending on the efficiency ratings of the units. The prices listed below are for 2.5-ton AC units with coils installed: 1  13 to 14 SEER (standard efficiency) â $2,370. 2  15 to 16 SEER (high efficiency) â $3,140.