From WIRED · Sophie Charara · · 3m
Can radar-equipped AC actually cut your power bill?
New air conditioners with motion sensors and heat pumps promise energy savings, but the real gains may come from unglamorous engineering rather than tracking you to the kitchen.
In brief
New air conditioners with motion sensors and heat pumps promise energy savings, but the real gains may come from unglamorous engineering rather than tracking you to the kitchen. AC makers are launching intelligent units with radar sensors to track occupants and deliver targeted cooling, but experts say sustainable…
Global cooling demand is surging
With rolling heat waves sweeping the globe, twenty twenty-seven is shaping up to be the hottest year on record. Air conditioners and electric fans account for around twenty percent of electricity used in buildings worldwide.
AC emissions and future growth
Air conditioning accounts for three to four percent of total greenhouse gas emissions. The number of AC units in use could reach five point five billion by twenty fifty as demand for cooling grows.
Intelligent AC boom begins
In nineteen ninety-four, Mitsubishi Electric introduced the first motion and occupancy sensors for AC. Fast-forward to twenty twenty-six and AI-powered ACs now track people in the home with millimeter-level precision.
Radar-equipped models launched in twenty twenty-six
AC makers launched intelligent units all year. Samsung introduced its Bespoke AI system in March, Dyson its Find+Follow feature in June, and Chinese companies like Hisense, Dreo, and Midea showed models at IFA in September.
LG and Hisense target cooling zones
LG's DualCool AI AC has a five-meter radar sensor for people detection. Hisense's Companion Living AC uses smart home sensor data to precool target paths based on your routines, cooling the zone before you even…
Energy savings potential unclear
Precisely locating people and delivering cooling directly to them could reduce energy consumption. Björn Palm, senior professor in energy technology at the KTH Royal Institute of Technology in Stockholm, says it has potential but the…
“It definitely has the potential to reduce the total energy use for air-conditioning.”
Samsung claims up to thirty percent savings
Samsung's Bespoke AI WindFree Pro adds a motion radar sensor that recognizes and tracks two occupants.Samsung's residential environment tests claim energy savings of up to thirty percent with its overall AI energy mode switched on.
Midea uses millimeter-wave radar and photos
Midea's VitaBreeze AC, launching in early twenty twenty-seven, combines user photos with millimeter-wave radar sensors to personalize cooling.
Skepticism about real-world performance
Vincent Romanin, founder and CTO of San Francisco-based Gradient, says targeted AC can improve performance if done well. But he has never used a product with an occupancy sensor that he felt worked well.
“I personally have never used a product with an occupancy sensor that I feel like worked well.”
Heat pumps and natural refrigerants matter more
To reach sustainable home cooling by twenty fifty, Björn Palm says we need three major changes: cheaper compact heat pumps for all home sizes, fewer toxic natural refrigerants, and newly designed systems with low charge…
Refrigerant leaks drive emissions
Leaking refrigerants account for an estimated seven hundred twenty million metric tons of carbon dioxide-equivalent emissions every year. Natural refrigerants like propane dramatically curb global warming potential but their flammability demands complex redesigns.
What to remember
AC makers are launching intelligent units with radar sensors to track occupants and deliver targeted cooling, but experts say sustainable cooling by twenty fifty depends more on compact heat pumps and natural refrigerants than on tracking technology.
