Welcome to the great indoors.

Meet Gradient, the hybrid cooling and heating system that unlocks new dimensions of comfort.

$1,999 $99 deposit
Learn More

Welcome to the great indoors.

Meet Gradient, the hybrid cooling and heating system that unlocks new dimensions of comfort.

$1,999 $99 deposit
Learn More

Do it yourself.

Until now, advanced heat pump technology has required professional installation with hefty price tags. Gradient brings it to you in a beautiful, easy-to-install package.

Get your view back.

Gradient fits snugly below your windowsill instead of smack inside it, so you can keep the view and the natural light.

Get your view back.

Gradient fits snugly below your windowsill instead of smack inside it, so you can keep the view and the natural light.

Stay in your comfort zone.

Enjoy air that’s not too dry, not too sticky and always just right. Now you can stay cool in the summer, warm in the winter and well rested year-round.

Get Early Access

We’ve engineered something —how shall we say it —cooler.

SEE OUR TECH

The reviews are in.

See what people and the press have to say about Gradient.

“Gradient has replaced the conventional home window air conditioner with a space-saving designed solution that keeps homes cool with advanced heat pump technology and a climate-friendly refrigerant.”

Sandra Rossi, Climate Control News

Better climate for you means better climate for all.

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In The News

  • “Gradient designed its device to work like a more expensive heat pump”

  • “A window heat pump project is bringing cutting-edge climate tech to New York public housing”

  • “Electrifying apartment buildings is tough. A new heat pump design could make it easier.”

  • “This little heat pump could be the answer to a lot of prayers.”

  • “Gradient has designed a heat pump that easily slides over a windowsill — it doesn’t block light — and currently uses a refrigerant called R32”

  • “Unlike more traditional heat pumps, these new window units can essentially just sit in your window sill.”

  • “Gradient is betting on heat pumps’ potential to decarbonise domestic cooling with high efficiency but low cost.”