Breethr P1 is a home system that heats, cools, filters, controls humidity, and brings outdoor air into one room only after filtering it. It is aimed at households that want those jobs in a single connected unit instead of separate appliances. Pre-orders are open, with a $99 refundable deposit counted toward a $1,299 price, and US shipments scheduled to begin in March 2027. The hardware is two pieces. A 22-pound indoor unit hangs on a wall rail, horizontally or vertically, and a 110-pound outdoor unit holds the factory-sealed refrigerant system. They connect through a gasketed window insert with two snap-fit pipes, so sliding and sash windows need no permanent changes, which is the setup Breethr says renters can use. An app shows indoor and outdoor air quality, particulates, and CO2, and lets you set temperature, humidity, and fresh air while sensors keep adjusting through the day. Listed coverage is about 250 square feet at a 10-foot ceiling, at a sound level of 50 dBA. Abhinav Gupta is presenting the launch after spending the last decade on indoor air, first measuring it at ActiveBuildings and then building systems that act on those readings. He co-founded Breethr in 2024 with Manav Shetty, and earlier Breethr units went into hospitals, clinics, gyms, and homes in India. P1 is the product built for a household room you can set up yourself and take with you when you move.