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Trane Announces First Air-to-Water Heat Pump, Redesigned Precedent Rooftop Units

Ascend (Photo courtesy of Trane)

Trane – by Trane Technologies, a global climate specialist – has released the Ascend Air-to-Water Heat Pump Model ACX, the first air-to-water pump solution in its portfolio that provides both electric heating and cooling, giving building owners an avenue to pursue decarbonization via electrification. Trane also announced it is bringing a new generation of Precedent rooftop units to market, consolidating the legacy Precedent and Voyager 2 offerings. The first models in the redesigned series, the Precedent standard efficiency six- to 25-ton units, are available now.

Trane’s Ascend Air-to-Water Heat Pump Model ACX combines chiller and heat pump technology to both heat and cool a building using electricity. In cooling mode, the model ACX moves heat from inside the building to the outside. In heating mode, a reversing valve changes the flow of energy to bring heat from the outside of the building to the inside. The heat pump moves heat using a compressor, rather than simply generating heat. This technique can make heat pumps up to three times more energy-efficient than other forms of electric heating.

“Over 180 cities, more than 10 counties, and eight states across the U.S. have goals to power their communities with 100% clean, renewable energy. As the grid gets greener, the need for full electric heating and cooling is growing,” said Dave Molin, vice president of Trane Product Management, Equipment, Controls and Digital. “Engineers, contractors, and building owners want to lower fossil fuel consumption and reap the efficiency and sustainability benefits of electrified heating and cooling. By joining Trane’s best-in-class chiller expertise with the Ascend air-to-water heat pump, Trane is making electrified heating and cooling a realistic option for customers.”

As a result of its boiler-free heating, the model ACX achieves high energy efficiency for cooling and heating. The unit’s heating efficiency exceeds ASHRAE standard 90.1-2019: 2.77 COP for heating and a cooling requirement of 9.215 EER.

Trane is releasing a new generation of Precedent rooftop units to meet the next era of energy efficiency requirements. The new Precedent portfolio will include capacities from three to 25 tons, a full range of tonnages and heating types, and improved efficiency levels. The new single-product family of light commercial unitary rooftops will be released in phases now through 2024.

Available immediately, the Precedent standard efficiency six- to 25-ton cooling and gas units feature various improvements and upgrades, including part-load efficiency ratings that comply with new industry efficiency requirements. New Precedent units are enabled by the Symbio 700 controller to easily monitor and control HVAC systems and harness building connectivity for advanced troubleshooting and energy management.