Trane Technologies and Garrett Motion — a global leader in turbocharging and electrification technologies — announced a strategic collaboration on February 2, 2026 to accelerate next-generation, oil-free centrifugal compressor technology for commercial HVAC applications. The collaboration brings together Trane's commercial HVAC system expertise with Garrett's breakthrough oil-free high-speed centrifugal compressor technology, which has already demonstrated major energy efficiency gains in Trane's testing.
Field testing and production of the jointly developed technology are scheduled to begin in 2026. The target products span Trane's commercial HVAC portfolio: unitary rooftop units, modular chillers, and large capacity chillers for data centres, hospitals, commercial office buildings, and other demanding applications.
What Oil-Free Centrifugal Compressor Technology Is
Conventional HVAC compressors — including the reciprocating, scroll, and screw compressors that dominate residential and commercial HVAC — use oil lubrication to reduce friction between moving parts. The oil system adds complexity, requires maintenance, and introduces the lubricant compatibility challenges discussed in this publication's compressor lubricants article.
Oil-free centrifugal compressors eliminate this oil system by using magnetic bearings or other non-contact bearing technologies that levitate the rotating assembly — removing the metal-to-metal contact that requires lubrication. The result is a compressor with:
• No oil contamination of the refrigerant circuit: Eliminating oil completely removes the heat exchanger fouling, expansion device plugging, and efficiency degradation that oil carryover causes in conventional compressor systems
• Lower maintenance requirements: No oil to change, no oil filter to replace, no oil separator to service — simplifying preventive maintenance programmes for large commercial systems
• Higher efficiency potential: Conventional compressors lose efficiency to oil churning and friction even with proper lubrication. Oil-free centrifugal compressors eliminate these losses, enabling efficiencies that exceed what oil-lubricated compressors can achieve
• Compatibility with ultra-low GWP refrigerants: Many next-generation refrigerants have different chemical interactions with lubricants than current HFCs. Oil-free operation sidesteps these compatibility challenges entirely, accelerating the adoption of ultra-low GWP refrigerants in commercial applications
Trane Technologies and Garrett Motion announced a February 2, 2026 collaboration to develop oil-free high-speed centrifugal compressor technology for commercial HVAC rooftop units, modular chillers, and large chillers — with field testing and production beginning in 2026 and demonstrated major energy efficiency gains in Trane's internal testing of Garrett's breakthrough technology.
Garrett Motion's Background — Not an Obvious HVAC Partner
Garrett Motion is best known as the world's leading turbocharger manufacturer for automotive applications — the company spun out of Honeywell's Transportation Systems division in 2018. Its engineering expertise in high-speed rotating machines, centrifugal compression, and advanced bearing systems is precisely what oil-free HVAC compressor development requires.
Garrett's foray into HVAC compressors is part of a broader electrification and diversification strategy. As automotive turbocharger demand evolves with the shift toward electric vehicles, Garrett has been investing in new applications for its core rotating machine expertise. HVAC represents a massive, technically demanding market where Garrett's compressor technology can create genuine value.
For the HVAC industry, the Garrett-Trane collaboration is a signal that the next generation of commercial compressor technology may come from outside the traditional HVAC supplier ecosystem — automotive engineers applying decade-refined centrifugal compression knowledge to building systems applications.
Frequently Asked Questions
What is the Trane-Garrett Motion compressor collaboration?
Trane Technologies and Garrett Motion announced a February 2, 2026 strategic collaboration to develop oil-free high-speed centrifugal compressor technology for commercial HVAC applications including unitary rooftop units, modular chillers, and large capacity chillers. Field testing and production are scheduled to begin in 2026.
What are the benefits of oil-free centrifugal compressors in HVAC?
Oil-free centrifugal compressors eliminate lubricant carryover into the refrigerant circuit (improving heat exchanger efficiency), reduce maintenance requirements (no oil changes, filters, or separators), enable higher energy efficiency by eliminating friction losses, and simplify compatibility with next-generation ultra-low GWP refrigerants.
