Commercial and vertical stacked water-source heat pumps from Johnson Controls have been certified by the Air-Conditioning, Heating and Refrigeration Institute.

Commercial and vertical stacked water-source heat pumps from Johnson Controls Inc. have been certified by the Air-Conditioning, Heating and Refrigeration Institute, company officials announced.

All certified models can be used in water-loop, ground water, or ground-loop applications, Johnson Controls said.

The full list of certified models is available here . Select “Johnson Controls” from the “Manufacturer” drop-down box.