As the planet warms, more people need air conditioners—but traditional ACs use a lot of energy and exacerbate global warming. The Gradient ($1,999, pre-order for 2023 delivery) aims to break this doom ...

(Bloomberg) -- A heat pump that can be installed in minutes is allowing the city of Boston to quickly decarbonize a public housing complex for the elderly and provide air conditioning as climate ...

Easy-to-install window heat pumps from Gradient are beginning to dot the facade of one of Boston’s public housing properties, Hassan Apartments. (Photo courtesy Eversource via Canary Media) This is ...

Faced with the age-old quandary of how to cool residential buildings during the summer without central air HVAC systems, compressors that drain the grid and cause system outages, or toxic refrigerants ...

As the Earth continues to warm, passive designs for natural ventilation and heating are no longer enough in many areas. To escape extreme temperatures in either direction, effective air conditioning ...

Compact heat pumps that slot into windows could be a planet-friendly way to efficiently heat and cool apartment buildings without breaking the bank, experts say. While many single-family residences ...

For 27 years, the heat in Regina Fred’s Queens apartment building came from a noisy steam radiator that she couldn't control and sometimes didn't come on at all, leaving her shivering. Sometimes, the ...