Mainline Heat Pump Manuals — page 2
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 |
|---|---|---|
| ML48HP230MUL-OML Series | 45,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML48HP230MULH-OML Series | 47,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML50HP230LMNTH-OML Series | 4-ton split-system heat pump | August 2026 |
| ML55HP230MULH-OML Series | 51,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML60HP230LCMH-OML Series | 54,000 Btu/h ductless mini-split heat pump | August 2026 |
| ML60HP230LMNT-OML Series | 4.5-ton split-system heat pump | August 2026 |
| ML60HP230LMNTH-OML Series | 4.5-ton split-system heat pump | August 2026 |
| MLP15AY18AJ2NElite | 1.5-ton split-system heat pump | April 2025 |
| MLP15AY36AJ2NElite | 3-ton split-system heat pump | October 2025 |
| MLP15AY42AJ2NElite | 3.5-ton split-system heat pump | April 2025 |
| MLP15AY48AJ2NElite | 4-ton split-system heat pump | April 2025 |
| MLP15AZ18AJ2NElite | 1.5-ton split-system heat pump | June 2026 |
| MLP15AZ24AJ2NElite | 2-ton split-system heat pump | June 2026 |
| MLP15AZ30AJ2NElite | 2.5-ton split-system heat pump | June 2026 |
| MLP15AZ36AJ2NCLASSIC PLUS/ACHIEVER PLUS | 3-ton split-system heat pump | June 2026 |
| MLP15AZ42AJ2NElite | 3.5-ton split-system heat pump | June 2026 |
| MLP15AZ48AJ2NCLASSIC PLUS/ACHIEVER PLUS | 4-ton split-system heat pump | June 2026 |
| MLP15AZ60AJ2NElite | 5-ton split-system heat pump | June 2026 |
| MLP19AY24AJVCElite | 2-ton split-system heat pump | September 2026 |
| MLP19AY36AJVCElite | 3-ton split-system heat pump | September 2026 |
| MLP19AY48AJVCElite | 4-ton split-system heat pump | September 2026 |
| MPP15AY18AJ2NPerformance | 1.5-ton split-system heat pump | April 2025 |
| MPP15AY36AJ2NPerformance | 3-ton split-system heat pump | October 2025 |
| MPP15AY42AJ2NPerformance | 3.5-ton split-system heat pump | April 2025 |
| MPP15AZ18AJ2NPerformance | 1.5-ton split-system heat pump | July 2026 |
| MPP15AZ24AJ2NPerformance | 2-ton split-system heat pump | June 2026 |
| MPP15AZ36AJ2NPerformance | 3-ton split-system heat pump | June 2026 |
| MPP15AZ42AJ2NPerformance | 3.5-ton split-system heat pump | July 2026 |
| MPP15AZ48AJ2NPerformance | 4-ton split-system heat pump | June 2026 |
| MPP15AZ60AJ2NPerformance | 5-ton split-system heat pump | July 2026 |
| RHPXYC024AJTRHPXYC | 2-ton packaged heat pump | April 2025 |
| RHPXYC036AJTRHPXYC | 3-ton packaged heat pump | December 2024 |
| RHPXYC048AJTRHPXYC | 4-ton packaged heat pump | December 2024 |
| RHPXYC060AJTRHPXYC | 5-ton packaged heat pump | December 2024 |