Oil-free and magnetic-bearing chillers
22 vendors sell oil-free chillers with magnetic-bearing or Turbocor compressors. Their largest single units run from 10.6 MW (Daikin Applied) up to 21 MW (Trane), and 17 offer free cooling. Efficiency is published as EER, IPLV, SEER or COP, so read the metric name before comparing numbers.
| Heat rejection | Compressors | Refrigerants | Efficiency (as published) | |||||
|---|---|---|---|---|---|---|---|---|
| Trane | 4001 | 21,0002 | Air- and water-cooled | Oil-free magnetic-bearing centrifugal; centrifugal; variable-speed screw | R-1234ze; R-513A; R-134a; R-1233zd; R-515B | GVAF: SEER up to 6.55; seasonal metric, not full-load EER | — | 2026-11-11 |
| Hitachi Cooling & Heating | — | 12,3102 | Air- and water-cooled | Two-stage centrifugal (S, VG); oil-free magnetic-levitation (VM) | R-513A; R-1233zd; R-1234ze; R-134a | Announced range: up to 13.8 ACCOP; vendor-specific annual metric | — | 2026-11-11 |
| Daikin Applied | 3021 | 10,5511 | Air- and water-cooled | Variable-volume-ratio screw; Variable-speed oil-free magnetic-bearing | R-1234ze(E); R-515B; R-513A; R-1233zd(E) | Pathfinder AWV: IPLV above 22 EER; Pathfinder AWM: up to 22.7 IEER (US units) | 29.41 | 2026-11-11 |
| Dunham-Bush | 2641 | 10,5501 | Air- and water-cooled | Inverter-driven dual-stage, oil-free magnetic-bearing | R-134a; R-513A | — | — | 2026-11-11 |
| Haier | 4401 | 8,7931 | Water-cooled | Direct-drive magnetic-bearing centrifugal | R-134a | — | — | 2026-11-11 |
| Vertiv | 3001 | 6,0004 | Air- and water-cooled | Inverter screw; oil-free magnetic-levitation centrifugal | R-1234ze; R-513A; R-515B; R-134a | — | — | 2026-11-11 |
| Kirloskar Chillers | 3341 | 4,2201 | — | Magnetic-bearing centrifugal | R-134a; R-1234ze | — | — | 2026-11-11 |
| Carrier | 1701 | 3,8001 | Air- and water-cooled | Scroll; variable-speed screw; two-stage magnetic-bearing centrifugal | R-513A; R-1234ze(E); R-515B; R-32 | COP 6.75, IPLV 11.4 under AHRI (AquaEdge 19MV4) | 353 | 2026-11-11 |
| Johnson Controls (YORK) | 8804 | 3,5004 | Air-cooled | Single-stage magnetic-bearing centrifugal, variable-speed | R-1234ze | 40% less annual power than other solutions at the same capacity (vendor claim) | 303 | 2026-11-11 |
| Multistack | — | 2,9891 | Air-cooled | Two-stage variable-speed centrifugal MagLev | — | — | — | 2026-11-11 |
| Smardt | 2111 | 2,5001 | Air- and water-cooled | Oil-free magnetic-bearing | R-513A; R-515B; R-1234ze; R-134a | — | — | 2026-11-11 |
| Uniflair (Schneider Electric) | 1,2001 | 2,5001 | Air-cooled | Oil-free magnetic-bearing centrifugal | — | EER 4.66 (Schneider Electric’s figure; rating conditions not published) | 331 | 2026-11-11 |
| APX DCS (LFB Group) | 501 | 2,4001 | — | Oil-free centrifugal; multi-scroll; inverter screw | R-1234ze; R-454B | — | — | 2026-11-11 |
| Midea Building Technologies | 5631 | 2,2511 | Air-cooled | Two-stage magnetic-bearing centrifugal; inverter screw | R-1234ze(E); R-513A | COP up to 7.11 at AHRI conditions (centrifugal line) | — | 2026-11-11 |
| Geoclima (Munters) | — | 2,2001 | Air-cooled | Oil-free centrifugal Turbocor with magnetic levitation | R-513A; R-134A; R-1234ze | R513A/R134A example: full-load EER 5.35 at 35°C ambient and 34/24°C water | — | 2026-11-11 |
| LG Electronics | 1,6881 | 2,1101 | Air-cooled | Semi-hermetic oil-free magnetic-bearing centrifugal, variable-speed | R-513A | EER 4.0 at full load, microchannel heat exchanger | — | 2026-11-11 |
| Airedale by Modine | 1101 | 2,0002 | Air-cooled | Oil-free centrifugal Turbocor | R-1234ze; R-134a | Up to 39% energy savings over standard methods (TurboChill DCS, vendor claim) | 262 | 2026-11-11 |
| ENGIE Refrigeration | 2501 | 2,0001 | Air- and water-cooled | Oil-free magnetic-bearing | — | — | — | 2026-11-11 |
| STULZ | 2801 | 1,8601 | Air- and water-cooled | Screw (stepless or frequency-converter); Turbocor | R-1234ze; R-513A | — | 251 | 2026-11-11 |
| Mitsubishi Electric (Climaveneta) | 1,2001 | 1,7501 | Air-cooled | Magnetic-levitation centrifugal; oil-free magnetic-bearing | R-1234ze; R-515B | — | 263 | 2026-11-11 |
| Aermec | 2001 | 1,6001 | Air-cooled | Screw (NSM HWT); Turbocor magnetic-levitation (TBA/TBG) | R-134a; R-513A; R-1234ze; R-515B; R-32 | — | 301 | 2026-11-11 |
| Euroklimat | 1901 | 1,4001 | Air- and water-cooled | Oil-free magnetic-levitation Turbocor | R-134a; R-513A; HFO option | — | — | 2026-11-11 |
The lines behind each row
All 32 vendorsHow to read the columns
Methodology- Smallest unit kW
- Lowest published cooling capacity across the chiller lines named in the 'Lines' field, converted from refrigeration tons at 3.517 kW per ton where the vendor publishes tons. Rating conditions differ by vendor and line, so compare ranges, not decimals. Blank when no line states a lower bound.
- Largest unit kW
- Highest published cooling capacity of a single chiller across the lines named in 'Lines', converted from tons at 3.517 kW per ton where needed. Project totals, multi-unit plants and announced-only products are excluded. Blank when not published.
- Heat rejection
- How the named lines reject heat: air-cooled (condenser fans), water-cooled (cooling tower or dry cooler loop) or both. Absorption chillers run on a heat source instead of an electric compressor.
- Compressors
- Compressor technologies in the named lines, as the vendor words them: scroll, screw, centrifugal, magnetic-bearing (oil-free) centrifugal.
- Refrigerants
- Refrigerants the vendor lists for the named lines. A refrigerant may be offered only on some sizes or markets; the record's sources say which.
- Efficiency (as published)
- Efficiency figures with the metric and conditions the vendor gives (EER, SEER, IPLV, COP). The metrics are not interchangeable: SEER and IPLV are weighted part-load figures, EER and COP are single points.
- Max supply water °C
- Highest chilled-water supply (leaving) temperature the vendor states for a named line. A rating point is not an operating limit and is not used here. Blank when not stated.