Alongside its highly publicised breakup into three companies, Honeywell made a significant and less-covered acquisition: the $2.16 billion purchase of Sundyne in June 2025 — a manufacturer of high-speed centrifugal pumps, compressors, and heat pumps for industrial process applications. The Sundyne acquisition gives Honeywell's Building Automation and Process Automation segments industrial heat pump manufacturing capability that neither possessed before the deal.
In the context of Honeywell's restructuring into a focused Building Automation and industrial automation company (after the aerospace and advanced materials separations), the Sundyne acquisition makes strategic sense: Honeywell RemainCo will be a building systems and industrial process company, and industrial heat pumps — which decarbonise high-temperature industrial process heat — are the fastest-growing segment of the broader heat pump market.
Who Is Sundyne?
Sundyne is a manufacturer of engineered, high-speed centrifugal pumps, compressors, and heat pumps for critical process applications in the oil and gas, chemical, industrial, and power generation sectors. The company's products are not consumer or residential HVAC — they are highly engineered, precision-manufactured systems for demanding industrial environments where reliability under extreme operating conditions is non-negotiable.
Sundyne's heat pump product line specifically addresses the industrial process heat market — delivering high-temperature process heat for applications including chemical processing, petrochemical refining, and manufacturing processes that require heat at temperatures above what conventional residential or commercial heat pumps can reach. This capability is directly aligned with the industrial decarbonisation thesis: companies with industrial process heat requirements that are currently served by gas or steam boilers are potential markets for heat pumps that can deliver equivalent output temperatures electrically.
Honeywell's $2.16 billion acquisition of Sundyne — a manufacturer of high-speed centrifugal pumps, compressors, and industrial heat pumps — in June 2025 adds industrial process heat pump manufacturing capability to the Building Automation and Process Automation segments that will form the core of Honeywell RemainCo after the Aerospace Technologies separation.
Why Industrial Heat Pumps Are Honeywell's Strategic Bet
The Sundyne acquisition reflects Honeywell's conviction that industrial heat pumps are the next major growth category in building and process systems — following the same logic that drove Samsung's FläktGroup acquisition and Ecolab's CoolIT acquisition: industrial decarbonisation is creating enormous demand for electrified thermal solutions.
For the Honeywell RemainCo — which will be a pure-play Building Automation and industrial automation company — owning Sundyne's industrial heat pump capability creates an integrated offering: building management systems (Honeywell BMS) + HVAC controls (Honeywell thermostats and controllers) + industrial process heat pumps (Sundyne) covering the full thermal energy management spectrum from commercial buildings to industrial facilities.
Frequently Asked Questions
What is Sundyne?
Sundyne is a manufacturer of high-speed centrifugal pumps, compressors, and industrial heat pumps for critical process applications in oil and gas, chemical, industrial, and power generation sectors. Honeywell acquired Sundyne for $2.16 billion in June 2025 to add industrial process heat pump capability to its Building Automation and Process Automation portfolio.
Why did Honeywell acquire Sundyne?
The Sundyne acquisition positions Honeywell RemainCo — after the Aerospace and Solstice separations — as an integrated building and industrial automation company with industrial heat pump capability. It supports Honeywell's strategy of concentrating on automation and building systems while adding industrial decarbonisation technology to its portfolio.
