The best air conditioners efficiently and quietly cool your space. These are the best window and portable units for bedrooms, large spaces, and more.

R-1234yf can’t be compressed as much as R-410a, so the tubing and other components of the R-1234yf air conditioner would need to be somewhat larger and more expensive.

You probably would, and this is what ductless mini-split HVAC systems offer, in addition to very effective cooling in the ...

Global air-conditioner use is expanding faster than we are adding new renewables to the grid. The winners of the Global Cooling Prize have a solution: AC with five times lower climate impact.