Willis Carrier invented the airconditioner in 1902.
Willis H Carrier, After whom the brand "Carrier" sells airconditioners
Yes, all their current airconditioners are energy star certified.
It is unlikley that you couldconfigure many airconditioners to be used as heaters.
JC Whitney and Quadratec both sell kits to add aftermarket airconditioners with factory specs.
Both hardware store can offer a variety of airconditioners. There is a good chance that they would be able to answer you questions on a specific airconditioning method, especially if you speak to an installer.
If you mean BTU as in British Thermal Units cars generally have 3 to 5 ton airconditioners. A 12,000 BTU/hour cooling capacity is equivalent to 1 ton of refrigeration. The BTU equivalent of 1 ton of refrigeration is 288,000 BTU per 24 hours.
jv
invented in 500BC before electricity was invented
The CD was invented in 2001 Thomas clamps invented it.
Gloria Mejia invented it and she invented it in 1998
When and where were snickerdoodles invented Why were snickerdoodles invented
who invented the washboard?