This old technology getting some fresh attention is a trend investors may not want to miss: Heat pumps. Heat pumps provide both air conditioning and heat — all in one device. Heat pumps could play a viable role in this regard," Muhedini said in a research note last week. The DOE also runs a Residential Cold Climate Heat Pump Technology Challenge , which is partnered with Trane, Carrier, and Johnson Controls, among other leading heat pump makers. In the chemicals sector, companies that produce more eco-friendly refrigerants for heat pumps could one day reap the benefits of recent legislation in the U.S. that will ban next year the production of heat pumps that use refrigerants with high levels of global warming potential.

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Persons: hasn't, They're, William Thompson, Amantia, Muhedini, Thompson, Johnson, Jefferies, Stephen Volkmann, Trane, Andrew Kaplowitz, Deane Dray, Dray, Lennox, Owens, It's, they've, Nestle Organizations: UBS, McKinsey, Barclays, United Nations, UN, International Energy Agency, Johnson Controls, Carrier, Solutions, Citi, Wednesday, U.S . Department, DOE, Trane, RBC Capital, Johnson, Companies, Rockwell Automation, Honeywell International, Arkema, Unilever Locations: industrials, U.S, Paris, Trane, Monday's, Spain, Switzerland