Unlike other products Consumer Reports tests, we don’t have performance ratings for central air conditioning systems ... But the best option is to have your contractor do a load calculation ...

we measure how long it takes a unit to lower the temperature of a test chamber from 90° F to 85° F. That takes an average of 20 minutes. By comparison, the best window air conditioners can cool ...

Ductless air conditioning systems, or mini splits, can heat and cool your home in a single, easy-to-install, compact system.

Consider giving your HVAC system an upgrade with a smart thermostat ... see our comprehensive thermostat buying guide. See Consumer Reports’ smart thermostat ratings for full results on all ...