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Heating and cooling equipment multinational Johnson Controls has developed an air source heat pump prototype that can operate in temperatures below -20F (-29C) as part of the US Department of Energy’s (DOE) Residential Cold Climate Heat Pump Challenge.
DOE launched this challenge because, according to the program’s fact sheet, “additional efforts are needed to address common technical and market barriers to wider adoption by consumers – which include performance at temperatures of 5F and below, installation challenges, and electricity grid impacts during peak demand periods.”
DOE is working with manufacturers to lab test cold climate heat pumps’ performance. Field testing will take place over the next couple years, and DOE is aiming for commercialization in 2024.
Besides Johnson Controls, other manufacturers such as Carrier, Trane, and Bosch are also taking part in the challenge.
Trane successfully completed its lab testing phase required by the heat pump challenge in early November and moved into the field trials phase. Katie Davis, vice president of engineering and technology, Residential HVAC, Trane Technologies, told Contracting Business in December that “there are no products in the market that currently meet the DOE CCHP Challenge performance specifications.” However, Davis said:
There are already units on the market in the United States that work at low temperatures – just not as low as the Johnson Controls or Trane prototypes. Johnson Controls currently has two residential heat pumps on the US market – the York YZV and York HMH7 – that can operate at temperatures as low as 5F (-15C). (Johnson Controls bought York in August 2005.) And Trane’s Platinum XV20i can operate at temperatures as low as 0F.
