Industrial Heat Pumps: Can Factories Stop Burning Gas?
A dairy's chillers reject heat all day. Elsewhere in the same building, a gas burner heats wash water. Those two streams rarely meet - and the gap between them is where industrial heat pumps are being pitched.
This video explains how a heat pump upgrades waste heat using electricity-driven compression (evaporator, compressor, condenser, expansion valve), illustrated with an energy balance where two units of recovered heat plus one unit of electricity deliver three units of useful heat - a coefficient of performance of three. It traces the idea back to Peter von Rittinger's 1853 patent and 1856-57 prototype at the Ebensee saltworks in Austria, long before it could be built at factory scale.
Then the hard limit: temperature. A smaller lift from a warmer source performs far better than a large one, and steam's own pressure-temperature link adds a further constraint. That puts real industrial jobs - food washing and pasteurisation, paper drying, chemical hot-water and steam duties - inside reach, while high-temperature furnaces for steel and cement stay firmly out of scope.
Two real, dated projects anchor the second half. On 15 September 2026, Johnson Controls launched its Sabroe HitemHP line, advertising output up to 122C and a site-specific saving of over 91% that this video reads carefully rather than generalising. At BASF's Ludwigshafen site in Germany, a heat pump under construction will turn steamcracker cooling water into steam for formic acid production, with commissioning planned for mid-2027.
Finally the economics: why a heat pump at COP 3 can still cost more to run than a gas boiler, depending entirely on the price of electricity against the price of gas - illustrated with worked, labelled figures, not real plant data - and the retrofit costs (capital, grid connection, storage, backup, refrigerant safety, electricity's own carbon) that sit beyond the compressor. The verdict: suitable heat duties can switch today where source, temperature and economics line up; whole-site gas elimination is a longer story.
Educational documentary. Not financial or investment advice.
In these topics
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Chapters
- The factory throwing heat away
- An industrial idea from the saltworks
- How electricity upgrades waste heat
- Close the factory heat loop
- Temperature lift is the hard part
- Which industrial jobs fit?
- The September 2026 equipment launch
- From steamcracker cooling to useful steam
- Three times efficient can still cost more
- The retrofit beyond the compressor
- Can factories stop burning gas?
Sources and credits
Photo credits (Wikimedia Commons)
- Milk undergoing pasteurisation in a cheese vat; illustrative process, not the unnamed European dairy: James.folsom at English Wikipedia, Public domain - https://commons.wikimedia.org/wiki/File%3AMilk_Vat.jpg
- Water-source heat-pump shell-and-tube heat exchanger pipework, photographed 5 April 2021; illustrative isolated circuit: Ivangiesen, CC0 - https://commons.wikimedia.org/wiki/File%3AShell_and_Tube_Heat_Exchanger_Piping_1.jpg
- Modular chemical plant pipework under construction, photographed 26 December 2012; illustrative process equipment: LNCSRG, CC0 - https://commons.wikimedia.org/wiki/File%3AMod_chem_plant.jpg
- BASF Ludwigshafen Rhine-side chemical plant, September 2008; location context only, not 2026 construction: Immanuel Giel, Public domain - https://commons.wikimedia.org/wiki/File%3ABASF_am_Rhein_03.jpg
- Distribution substation switchgear, photographed 14 March 2026; illustrative grid infrastructure: Rsparks3, CC0 - https://commons.wikimedia.org/wiki/File%3ADistribution_substation_switchgear.jpg
Primary sources
- Waermepumpe Austria, '165 Jahre Waermepumpe - eine oesterreichische Erfolgsgeschichte' (undated); re- - Rittinger's 1853 patent and 1856-57 Ebensee prototype. Not presented as a commercial success.
- IEA, 'The Future of Heat Pumps', 'How a heat pump works', 2022 - the compressor-driven mechanism and the basis for the 2+1=3 COP illustration (calculated 6 Oct 2026).
- IEA HPT TCP, Annex 58 Task 2: Integration Concepts (HPT-AN58-3), 25 Apr 2024 - 12 industrial systems, 27 integration points; hot water, steam and large-glide duties need distinct designs.
- IEA, 'Renewables for Industry', executive summary, 2025 - large heat pumps up to 150C as established; price ratios and grid lead times restricting deployment.
- IEA, 'Heat Pump Monitor 2026', key findings, 2026 - readiness bands below 120C (commercial), below 160C (entering commercial) and up to 200C (development); lifetime-economics factors.
- Danish Technological Institute, 'European experts: High-temperature heat pumps are the future of process heating', 2 Mar 2026 - 200C systems framed as development and demonstration.
- Johnson Controls, 'Johnson Controls electrifies energy-intensive industries with new heat pumps...', 15 Sep 2026 - Sabroe HitemHP, 122C, butane/isobutane, Holme Denmark, >91% one-site saving.
- BASF, press release P-26-068, 8 Apr 2026 - 95-tonne evaporator delivered, ~50 MW thermal, up to 500,000 t steam/yr, mid-2027 commissioning, up to 100,000 t CO2/yr avoided (BASF's own estimate).
Not regulated financial advice.