Bosch mini-split heat pumps
ENERGY STAR lists 44 Bosch outdoor units in 91 certified indoor pairings; 73 pairings (80%) carry the cold-climate designation. Refrigerants: R-410A (41), R-454B (50).
| Outdoor unit | Pairings | Cooling BTU/h | Best SEER2 | Best HSPF2 | Best % at 5°F | Cold climate | Refrigerant | Top record |
|---|---|---|---|---|---|---|---|---|
| BMS500-AAS009-1CSXRC | 4 | 6,000–9,000 | 26.5 | 13.6 | 107% | Yes | R-410A | 2448678 |
| BMS500-AAS009-1CSXRD | 5 | 6,000–9,000 | 25.8 | 12.5 | 138% | Yes | R-454B | 3554550 |
| BMS500-AAS009-1CSXHC | 4 | 9,000–9,000 | 28.1 | 12 | 108% | Yes | R-410A | 2448674 |
| BMS500-AAS009-1CSXHD | 4 | 9,000–9,000 | 27.4 | 12.5 | 112% | Yes | R-454B | 3554534 |
| BMS500-AAS012-1CSXRC | 3 | 11,500–12,000 | 24.6 | 10.7 | 70% | Yes | R-410A | 2448681 |
| BMS500-AAS012-1CSXRD | 4 | 11,500–12,000 | 25.5 | 10.6 | 73% | Yes | R-454B | 3554554 |
| BMS500-AAS012-0CSXRC | 2 | 12,000–12,000 | 23.5 | 10 | 57% | No | R-410A | 2545709 |
| BMS500-AAS012-0CSXRD | 1 | 12,000–12,000 | 23.4 | 9.5 | 64% | No | R-454B | 3621200 |
| BMS500-AAS012-1CSXHC | 4 | 12,000–12,000 | 25.5 | 10.4 | 100% | Yes | R-410A | 2448698 |
| BMS500-AAS012-1CSXHD | 4 | 12,000–12,000 | 25.4 | 11.6 | 96% | Yes | R-454B | 3554541 |
| BMS500-AAS018-1CSXHC | 4 | 16,000–18,000 | 21.5 | 11.3 | 100% | Yes | R-410A | 2448701 |
| BMS500-AAS018-1CSXHD | 4 | 16,000–18,000 | 21.4 | 12.3 | 100% | Yes | R-454B | 3554544 |
| BMS500-AAS018-1CSXRC | 3 | 16,000–18,000 | 23.5 | 10.8 | 67% | No | R-410A | 2450903 |
| BMS500-AAS018-1CSXRD | 4 | 16,800–18,000 | 23.5 | 12.2 | 73% | Yes | R-454B | 3554559 |
| BMS500-AAM018-1CSXRC | 1 | 18,000–18,000 | 20.95 | 10.15 | 68% | No | R-410A | 2450394 |
| BMS500-AAM018-1CSXRD | 1 | 18,000–18,000 | 25.1 | 9.8 | 71% | Yes | R-454B | 3554581 |
| BMS500-AAM018-1CSXHC | 1 | 19,000–19,000 | 22 | 9.8 | 98% | Yes | R-410A | 2448716 |
| BMS500-AAM018-1CSXHD | 1 | 19,000–19,000 | 25 | 10.4 | 95% | Yes | R-454B | 3554569 |
| BMS500-AAS024-1CSXHC | 4 | 21,600–24,000 | 21.5 | 11.5 | 108% | Yes | R-410A | 2448695 |
| BMS500-AAS024-1CSXRC | 4 | 21,600–24,000 | 22 | 11.2 | 80% | Yes | R-410A | 2450890 |
| BOHA-24RTB-M18S | 1 | 23,200–23,200 | 17.25 | 9.5 | 78% | Yes | R-454B | 4520644 |
| BMS500-AAS024-1CSXHD | 3 | 23,400–24,000 | 21 | 13.5 | 95% | Yes | R-454B | 3554546 |
| BMS500-AAS024-1CSXRD | 3 | 24,000–24,000 | 23 | 11.7 | 78% | Yes | R-454B | 3554562 |
| BMS500-AAM027-1CSXHD | 1 | 27,000–27,000 | 23 | 10.5 | 100% | Yes | R-454B | 3554572 |
| BMS500-AAM027-1CSXRD | 1 | 27,000–27,000 | 25 | 9.5 | 70% | Yes | R-454B | 3554584 |
| BMS500-AAM027-1CSXHC | 1 | 28,000–28,000 | 21.5 | 10.05 | 89% | Yes | R-410A | 2450405 |
| BMS500-AAM027-1CSXRC | 1 | 28,000–28,000 | 22.8 | 9.35 | 67% | No | R-410A | 2450396 |
| BMS500-AAS030-1CSXRC | 1 | 30,000–30,000 | 20.1 | 9 | 62% | No | R-410A | 4478694 |
| BMS500-AAS030-1CSXRD | 1 | 30,000–30,000 | 20.5 | 9.5 | 67% | No | R-454B | 3554565 |
| BMS500-AAM036-1CSXRD | 1 | 35,000–35,000 | 20 | 9.2 | 70% | Yes | R-454B | 3554587 |
| BMS500-AAM036-1CSXHC | 1 | 36,000–36,000 | 22.2 | 10.3 | 97% | Yes | R-410A | 2448682 |
| BMS500-AAM036-1CSXHD | 1 | 36,000–36,000 | 23 | 10.7 | 100% | Yes | R-454B | 3554574 |
| BMS500-AAM036-1CSXRC | 1 | 36,000–36,000 | 23.9 | 9.5 | 68% | No | R-410A | 2450898 |
| BMS500-AAS036-1CSXLD | 1 | 36,000–36,000 | 20 | 10.3 | 70% | Yes | R-454B | 3554566 |
| BOHA-24MTB-M18S | 1 | 36,000–36,000 | 18.9 | 9.85 | 85% | Yes | R-454B | 4520608 |
| BOHA-36MTB-M18S | 1 | 36,000–36,000 | 18.9 | 9.85 | 85% | Yes | R-454B | 4520648 |
| BOHA-36RTB-M18S | 1 | 36,000–36,000 | 18 | 9.3 | 85% | Yes | R-454B | 4520642 |
| BMS500-AAM048-1CSXHD | 1 | 47,000–47,000 | 23 | 11 | 96% | Yes | R-454B | 3554578 |
| BMS500-AAM048-1CSXRD | 1 | 47,000–47,000 | 24 | 10.3 | 75% | Yes | R-454B | 3554590 |
| BMS500-AAM048-1CSXHC | 1 | 47,500–47,500 | 21.35 | 9.4 | 89% | Yes | R-410A | 2450554 |
| BMS500-AAM048-1CSXRC | 1 | 48,000–48,000 | 23.4 | 8.7 | 69% | No | R-410A | 2450723 |
| BMS500-AAS048-1CSXLD | 2 | 48,000–48,000 | 19 | 9.9 | 81% | Yes | R-454B | 3554567 |
| BOHA-60MTB-M18S | 1 | 60,000–60,000 | 18.25 | 9.65 | 70% | Yes | R-454B | 4529000 |
| BOHA-60RTB-M18S | 1 | 60,000–60,000 | 17.75 | 9.4 | 70% | Yes | R-454B | 4528998 |
Best values across pairings; open a unit page (DIY brands) or the ENERGY STAR record for each pairing.
See Bosch on the manufacturer's site (plain link, not an affiliate link)