• The Air-to-Water Cascade Heat Pump System Easily Retrofits with Existing Infrastructure

    More efficient than traditional boilers, it sources energy from outside air to heat the building, even when it’s cold outside.
    June 18, 2025

    The Air-to-Water Cascade Heat Pump System by Trane is an efficient electric alternative to traditional boilers. It sources energy from the outdoor ambient air, even when it’s cold outside, to provide a stable source of heat; then, the packaged water-to-water heat pump increases the heat temperature up to 165 degrees F., the same operating temperatures as boilers, to heat the building. This enables the system to achieve significantly higher temperatures than air-to-water heat pumps alone and makes it three times more energy-efficient than traditional heating.

    The design allows for easy integration with existing piping and coils, reducing disruption and eliminating the need for costly infrastructure modifications.

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