How Quilt solved the heat pump’s biggest challenge

Quilt, a smart home startup, has launched a three-zone heat pump system that significantly improves efficiency under challenging conditions that typically hinder traditional heat pumps. This new system features one outdoor unit capable of driving three indoor heads, simplifying large installations, reducing costs, and minimizing the outdoor footprint. Central to Quilt’s innovation is its extensive use of data collected from over a thousand internet-connected units equipped with numerous sensors. By analyzing real-world operational data, Quilt engineers enhanced heat pump capacity by 20% through a software update and developed the three-zone unit that overcomes common multi-zone heat pump challenges, particularly maintaining compressor stability at low speeds. Unlike most systems that sacrifice efficiency and comfort by stopping the compressor at low speeds, Quilt’s data-driven approach and design improvements—including a larger copper coil paired with a smaller compressor—allow the unit to operate efficiently even at very low temperatures (down to -13˚F/-25˚C). This design delivers nearly 90% of its rated capacity without losing low-demand performance