Ciarra air-to-water heat pump with R290 refrigerant and DC motor is highly energy efficient, making it an environmentally friendly and cost-effective heating option for homeowners. By converting air into water, the heat pump uses renewable energy sources to deliver heat to your home. The DC motor also makes the heat pump energy efficient, helping homeowners save money on their energy bills. With the Ciarra heat pump, you can heat your home without harming the environment or straining your budget.