Mitsubishi – 8-Zone 48,000 BTU Multi-Zone Cold Climate Hyper Heat Outdoor Unit | R-454B | Toronto & GTA Installation Included
Mitsubishi – 8-Zone 48,000 BTU Multi-Zone Cold Climate Hyper Heat Outdoor Unit | R-454B | Toronto & GTA Installation Included
The Mitsubishi PUMY-HL48NKMU is the flagship of the Mitsubishi multi-zone Hyper Heat lineup — an 8-zone Cold Climate Hyper Heat outdoor unit delivering 48,000 BTU of cooling and 54,000 BTU of heating across up to 8 independent indoor zones. Powered by Mitsubishi's H2i Hyper Heat Inverter technology with 23 SEER2 and 9.8 HSPF2, this unit is engineered for large residential properties, multi-unit buildings, and commercial spaces that demand maximum coverage with premium cold climate reliability. Using next-generation R-454B low-GWP refrigerant. This page is for the outdoor unit and installation only. Indoor units and branch boxes are sold separately. Price includes standard professional installation with up to 20 ft of lineset per indoor head.
Hyper Heat vs Standard Multi-Zone — What's the Difference?
| Feature | PUMY-HL Hyper Heat (This Page) | PUMY-L Standard |
|---|---|---|
| Technology | H2i Hyper Heat Inverter | Standard Inverter |
| Cold Climate Performance | Maintains strong heating output at extreme low temperatures | Reduced output as temperature drops |
| HSPF2 | 9.8 | 8.35 |
| Heating Capacity (BTU) | 54,000 | 50,000 |
| SEER2 | 23 | 23 |
| Best For | Maximum cold climate performance across 8 zones | Standard multi-zone coverage |
| Price | Higher — reflects premium Hyper Heat technology | Lower entry price point |
⚠️ Important — How PUMY Multi-Zone Systems Work
- This page — Outdoor unit (PUMY-HL48NKMU) + installation
- Branch boxes — PAC-LMC30BC or PAC-LMC50BC — indoor installation only, sold separately. Max 2 per ODU
- Indoor unit pages — One compatible indoor unit per zone, each sold separately
Supports up to 8 indoor units. Minimum 2 required. Contact Bison Air before purchasing to confirm system design, branch box configuration, and load calculation.
What's Included
- Mitsubishi PUMY-HL48NKMU Hyper Heat multi-zone inverter heat pump outdoor unit
- Standard professional installation by TSSA Certified technicians
- Up to 20 ft of lineset per indoor head included
- System startup, testing and commissioning
- Mitsubishi product registration
Key Features
- H2i Hyper Heat Inverter Technology — Flagship cold climate performance across 8 zones
- 8-Zone Operation — Maximum zone count in the Mitsubishi multi-zone lineup
- 48,000 BTU Cooling / 54,000 BTU Heating — Highest heating output in the PUMY-HL lineup
- 23 SEER2 Cooling Efficiency
- 9.8 HSPF2 Heating Efficiency — Significantly higher than standard PUMY-L 8-zone
- R-454B Refrigerant
- Branch Box Distribution — PAC-LMC series for flexible piping across floors and wings
- Inverter-Driven Compressor
- Independent Zone Control
- Blue Fin Coating
- 208-230V / 1-Phase / 60Hz
Technical Specifications
| Specification | PUMY-HL48NKMU |
|---|---|
| Outdoor Unit Model | PUMY-HL48NKMU |
| Total Cooling Capacity (BTU/h) | 48,000 |
| Total Heating Capacity (BTU/h) | 54,000 |
| Maximum Number of Indoor Units | 8 |
| SEER2 | 23.0 |
| EER2 | 13.1 |
| HSPF2 | 9.8 |
| Compressor Technology | H2i Hyper Heat Inverter |
| Refrigerant | R-454B |
| Electrical | 208-230V / 1-Phase / 60Hz |
| Line Set Size | 3/8" × 5/8" |
| Branch Box Required | Yes — PAC-LMC30BC or PAC-LMC50BC (sold separately) |
| Max Branch Boxes per ODU | 2 |
Required Accessories — Branch Boxes
- PAC-LMC30BC — Branch box, up to 3 indoor units (indoor installation only)
- PAC-LMC50BC — Branch box, up to 5 indoor units (indoor installation only)
If using 2 branch boxes: MSDD-50AR2-E (flared) + MSDD-50BR-E (brazing) required. Communication wiring: 16-2C GWA shielded cable.
Compatible Indoor Units
| Indoor Unit Type | Models | BTU Range | Best For |
|---|---|---|---|
| Wall Mount — GX Series | MSZ-GX06/09/12/15/18/24NL-CA1 | 6K–22.4K BTU | Bedrooms, living areas, offices |
| Wall Mount — FX Cold Climate Series | MSZ-FX06/09/12/15/18NL-CA1 | 6K–17.2K BTU | Maximum cold climate performance |
| 1-Way Ceiling Cassette — MLZ Series | MLZ-KX06/09/12/18NL-CA1 | 6K–18K BTU | Drop ceilings or joist space |
| Floor Standing — MFZ Series | MFZ-KX09/12/15/18NL-CA1 | 9K–17K BTU | Where wall mounting is not possible |
| Ducted Low Static — SEZ Series | SEZ-AD09/12/15/18NL-U1 | 9K–17.2K BTU | Concealed ceiling with minimal ductwork |
| Ducted Medium Static — PEAD Series | PEAD-AA09/12/15/18/24/30/36NL-U1 | 9K–36K BTU | Larger ducted zones |
| 4-Way Ceiling Cassette — SLZ Series | SLZ-AF09/12/15/18NL-U1 | 8.4K–17.7K BTU | Flush ceiling with 360° airflow |
| Multi-Position Air Handler — SVZ Series | SVZ-AP12/18/24/30/36NL-U1 | 12K–36K BTU | Ducted air handler (max 1 per system) |
| Cased Coil Zuba-Hybrid — PAA Series | PAA-AA/BA/CA 18/24/30/36NL-U1 | 18K–36K BTU | Hybrid heat pump + furnace |
Not sure which indoor units to choose? Contact Bison Air for a complete system design and load calculation.
Professional Installation — What's Included
- Site assessment and system design for outdoor unit, branch boxes, and indoor units
- Mounting and connection of outdoor unit
- Up to 20 ft of lineset per indoor head included
- Electrical connection (dedicated circuit required)
- Vacuum, leak test, and commissioning
- Walkthrough with homeowner or building manager
- Mitsubishi product registration
Note: Outdoor unit must be elevated minimum 18" off grade or roof surface.
Why Choose Bison Air
- ✅ TSSA Certified HVAC Contractor
- ✅ Fully Licensed & Insured HVAC Technicians
- ✅ Registered HRSP Heat Pump Rebate Contractor
- ✅ Standard Installation Included — No Hidden Fees
- ✅ Up to 20 ft Lineset Included Per Head
- ✅ Professional System Design & Equipment Selection
- ✅ Clean, Organized Installations
- ✅ Financing Available — Pre-qualify in Seconds
- ✅ Serving Toronto, York Region, Peel Region, Barrie & all GTA Communities
Financing & Rebates Available
Upgrading your heating and cooling system is an important investment. Bison Air offers flexible financing options to help homeowners install high-efficiency HVAC systems with manageable payment plans. Some energy-efficient systems may also qualify for available rebate programs in Ontario.
Learn more about available incentives on our Heat Pump Rebates page.
Our team can help you understand the available financing and rebate options.
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- HVAC Installation Toronto & GTA
Areas We Serve
Bison Air installs Mitsubishi multi-zone heat pump systems across the Toronto and Greater Toronto Area, including: Toronto| North York | Scarborough | Etobicoke | Vaughan | Markham | Richmond Hill | Aurora | Newmarket | East Gwillimbury | King City | Stouffville | Mississauga | Brampton | Oakville | Milton | Burlington | Barrie | Innisfil | Bradford | Keswick | Orillia | Ajax | Pickering | Whitby | Oshawa | Orangeville
Ready to Install? Contact Bison Air Today
Call us at 416-652-4323 or toll-free at 1-833-833-3623 to discuss your multi-zone project, confirm indoor unit selection, and schedule installation.
👉 Send us a message via our Contact Form
Documents:
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Warranty:
Parts: 10 Years
Labor: 1 Years
Extend labor warranty 10 years for $700.
The price includes complete installation and warranty and is based on standard installation. However, the price may vary depending on the location and any extra work required, such as high voltage wiring, duct modification, crawl space, or any other specific installation condition.
This information is general. Contact us for proper heat pump size, talk to an advisor, or request an in-home consultation.
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