A familiar air-conditioner promise is back in the spotlight: ”one night, one kilowatt-hour.” Gree says that line is less a promise than a sales trick, and it points to a bigger problem in the air conditioning business: energy labels that look precise while leaving plenty of room for creative interpretation.
The critique came from Zhu Lei, Gree Electric Appliances’ marketing chief, in an interview with Sina Technology. His bluntest point was simple: if the outdoor temperature is 26 C and the room is also held at 26 C, the compressor barely has any reason to wake up. In that case, the fan does most of the work, and overnight power use can even slip below one kilowatt-hour. That does not make the slogan honest; it makes it conveniently conditional.
Why the one kilowatt-hour claim works so well
The trick is that the claim sounds like a normal household experience, but it only really holds in a near-idle scenario. Buyers hear ”one night” and think of a typical summer evening with cooling demand, not a room that is already sitting at the same temperature as the outdoor air. That gap between perception and test condition is where marketing loves to hide.
Gree also took aim at APF, the Annual Performance Factor used to describe energy efficiency. Zhu described false APF labeling as the most dangerous kind of industry scam, saying companies exploit testing loopholes to inflate the figure. That complaint matters because energy ratings are supposed to help consumers compare products cleanly; if the test can be gamed, the label becomes decoration.
APF numbers are starting to look suspicious
There is another awkward wrinkle: Zhu said the same brand can show a lower APF on its main label than on its sub-brands, and that in the wider market, big mass-market names often trail lesser-known labels on APF. That does not automatically prove fraud, but it does suggest a market where the scoreboard is easier to manipulate than consumers would like. Competitors are obviously not going to line up and admit they are gaming the system, so the burden falls on regulators and buyers to read the fine print.
Gree is not a minor critic yelling from the sidelines. The company, founded in 1991, describes itself as the world’s largest dedicated air-conditioning maker, and official data says one in every three air conditioners in the world comes from its factories. That makes the public swipe at rivals more than industry noise; it’s a shot from one of the biggest players in the category, which is exactly why it will sting.
What buyers should watch on the box
- Check the cooling scenario behind the ”one kilowatt-hour” claim, not just the number itself.
- Look at APF, but treat unusually high figures with caution if the brand provides no clear test context.
- Compare main brands and sub-brands carefully; a prettier label is not the same as better real-world efficiency.
The next fight in air conditioning is likely to be less about who can print the biggest efficiency number and more about who can prove it under conditions people actually live in. If Gree is right, the industry’s favorite slogans are heading for a much rougher summer.