Tongyi Air‑to‑Water Heat Pumps deliver intelligent, sustainable heating and cooling for modern homes and light commercial spaces. Powered by natural refrigerant R290 with an ultra‑low GWP of just 3, our systems achieve industry‑leading efficiency with COP values up to 5.33 and the highest EU A+++ energy rating. The monoblock design simplifies installation with factory‑sealed refrigerant circuits, eliminating the need for F‑Gas certified installers. Native HEMS integration with PV‑responsive logic enables smart energy management, automatically shifting operation to solar peak or off‑peak tariff periods to maximize self‑consumption and reduce electricity bills. Ultra‑quiet operation as low as 46 dB(A) ensures a peaceful indoor environment. With a wide operating range down to -25°C, water outlet temperatures up to 75°C, and cascade capability supporting up to 8 units, Tongyi air‑to‑water heat pumps deliver reliable comfort across all seasons. Whether for residential villas, apartment buildings, or commercial facilities, Tongyi provides future‑ready heating solutions that combine efficiency, intelligence, and environmental responsibility.