Mainline Heat Pump Manuals
Select your Mainline model number below for installation steps, settings, maintenance schedules, troubleshooting and the full specification sheet. Your model number is printed on the rating plate on the side of the outdoor unit.
Mainline heat pumps by model number
| Model | Description | Certified |
|---|---|---|
| ML06HP230CALH-OML Series | 6,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML06HP230NEXH-OML Series | 6,500 Btu/h ductless mini-split heat pump | August 2026 |
| ML09HP115GEN-OML Series | 9,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML09HP230CALH-OML Series | 9,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML09HP230GEN-OML Series | 9,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML09HP230NEX-OML Series | 9,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML09HP230NEXH-OML Series | 9,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML09HP230WIN-OML Series | 9,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML12HP115NEX-OML Series | 12,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML12HP230CALH-OML Series | 12,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML12HP230GEN-OML Series | 12,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML12HP230NEX-OML Series | 12,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML12HP230NEXH-OML Series | 12,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML15HP230NEXH-OML Series | 15,500 Btu/h ductless mini-split heat pump | August 2026 |
| ML18HP230CALH-OML Series | 18,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML18HP230GEN-OML Series | 18,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML18HP230LMNT-OML Series | 1.5-ton split-system heat pump | August 2026 |
| ML18HP230LMNTH-OML Series | 1.5-ton split-system heat pump | August 2026 |
| ML18HP230MUL-OML Series | 18,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML18HP230MULH-OML Series | 19,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML18HP230NEX-OML Series | 18,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML18HP230NEXH-OML Series | 18,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML24HP230CALH-OML Series | 24,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML24HP230GEN-OML Series | 24,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML24HP230LMNT-OML Series | 2-ton split-system heat pump | August 2026 |
| ML24HP230LMNTH-OML Series | 2-ton split-system heat pump | August 2026 |
| ML24HP230NEX-OML Series | 24,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML24HP230NEXH-OML Series | 23,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML24HP230WIN-OML Series | 24,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML27HP230MUL-OML Series | 26,600 Btu/h ductless mini-split heat pump | August 2026 |
| ML27HP230MULH-OML Series | 27,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML30HP230GEN-OML Series | 30,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML30HP230LMNT-OML Series | 2.5-ton split-system heat pump | November 2025 |
| ML30HP230LMNTH-OML Series | 2.5-ton split-system heat pump | August 2026 |
| ML33HP230CALH-OML Series | 33,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML33HP230LMNTH-OML Series | 3-ton split-system heat pump | August 2026 |
| ML33HP230NEXH-OML Series | 33,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML36HP230LCM-OML Series | 36,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML36HP230LCMH-OML Series | 36,000 Btu/h ductless mini-split heat pump | July 2025 |
| ML36HP230LMNT-OML Series | 3-ton split-system heat pump | August 2026 |
| ML36HP230LMNTH-OML Series | 3-ton split-system heat pump | August 2026 |
| ML36HP230MUL-OML Series | 35,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML36HP230MULH-OML Series | 36,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML42HP230LMNTH-OML Series | 3.5-ton split-system heat pump | September 2026 |
| ML48HP230LCM-OML Series | 48,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML48HP230LCMH-OML Series | 48,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML48HP230LMNT-OML Series | 4-ton split-system heat pump | August 2026 |
| ML48HP230LMNTH-OML Series | 4-ton split-system heat pump | August 2026 |