In certain embodiments, a system for killing pests in an affected areaincludesa heat exchanger unit and an electric heater. The heat exchanger unit isplaced withinthe affected area and is coupled to a faucet. The heat exchanger unit isconfigured toreceive a flow of water from the faucet and to emit heated air by transferringheatfrom the flow of water to air flowing through the heat exchanger unit. Theelectricheater further heats the air emitted by the heat exchanger unit to a targettemperaturegreater than 120 degrees Fahrenheit.
