Pioneer
Pioneer 45,000 BTU (9K + 18K + 18K) 3.5-Ton Quantum Ultra Wi-Fi 22 SEER2 Energy-Star Multi 3-Zone Wall Mount Air Conditioner Heat Pump 230V
3.75 Ton | SEER2 22 | R-454B | 208-230V
- 45000 BTU cooling capacity
- Up to 22 SEER2 rated efficiency
- Uses R-454B refrigerant
- Runs on 208-230V power
Key Specifications
Product Overview
Pioneer Quantum Ultra 45,000 BTU 3-zone heat pump system is a mixed-capacity ductless mini split package for independent room-by-room comfort. This bundle pairs one YN050GLSI24M5G outdoor condenser with 9K + 18K + 18K wall-mounted indoor air handlers, giving homes, additions, offices, and light commercial spaces efficient cooling and heating from one matched system. This configuration uses three of the 5 available outdoor circuits; the remaining 2 circuits are left unused.
Why this system works well
- Balanced mixed-zone sizing: combines 9K + 18K + 18K indoor capacities for layouts with small, medium, and larger rooms instead of forcing three identical zones.
- Published compatibility: the YN050GLSI24M5G condenser supports 9K, 12K, 18K, and 24K compatible Quantum Ultra wall-mounted indoor sections, with connected indoor capacity up to 60,000 BTU.
- High-efficiency inverter performance: rated at 22 SEER2 / 11.2 EER2 for cooling and 10.0 HSPF2 IV / 7.8 HSPF2 V for heating, with variable-speed inverter operation for steadier comfort.
- Cold-weather heating: the ultra low-ambient design can deliver heat at outdoor temperatures down to -13°F, helping the system serve as a year-round comfort solution.
- Smart operation: Wi-Fi enabled controls and included wireless remotes make it easy to adjust each zone.
System configuration
| Base SKU | WYT050GLSI24M5-9W-18W-18W |
|---|---|
| Outdoor condenser | YN050GLSI24M5G (5-circuit, 42,000 BTU class) |
| Indoor combination | 9K + 18K + 18K (45,000 BTU connected indoor capacity) |
| Air handler #1 | 9,000 BTU wall mount (WT009GLSI24HLG) |
| Air handler #2 | 18,000 BTU wall mount (WT018GLSI24HLG) |
| Air handler #3 | 18,000 BTU wall mount (WT018GLSI24HLG) |
| Cooling capacity | 42,000 BTU/H nominal; rated 42,000 BTU/H |
| Heating capacity | 42,000 BTU/H nominal; heating at 17F = 31,000 BTU/H; heating at 5F = 30,000 BTU/H |
| Efficiency | 22 SEER2 / 11.2 EER2 cooling; 10.0 HSPF2 IV / 7.8 HSPF2 V heating |
| Electrical | 208-230V, 60 Hz, 1 phase; 45A double-pole breaker |
| Recommended room size | 1,000-1,600 sq. ft. |
| Refrigerant | R-454B; factory precharge supports 10-25 ft per connected circuit per Pioneer submittal guidance |
| Certifications | Energy Star, ETL, AHRI, and DOE listed by Pioneer |
What is included
- 1 x Pioneer YN050GLSI24M5G outdoor multi-zone condenser section
- 1 x 9,000 BTU wall-mounted indoor air handler (WT009GLSI24HLG)
- 2 x 18,000 BTU wall-mounted indoor air handler (WT018GLSI24HLG)
- Wireless remote controllers with Wi-Fi control support
- Selected insulated flared copper line sets and installation accessories
- Pioneer documentation for installation, service, AHRI certification, and energy guide reference
Line-set options
Choose a line-set length for each indoor air handler before adding to cart. Available choices are None, 10 Ft, 16 Ft, 25 Ft, 33 Ft, and 50 Ft. If your total combined line-set length is longer than the factory pre-charge allowance, the installing technician may need to add refrigerant according to the installation manual.
Installation note
This is a ductless heat pump system that should be sized, installed, evacuated, leak-tested, and commissioned by a qualified HVAC professional according to local code and Pioneer installation instructions.
Product resources
Manuals & Documents
Technical Specifications
Performance
| System Type | Mini-Split |
|---|---|
| Capacity | 45000 BTU |
| Tonnage | 3.75 Ton |
| SEER2 | 22 |
| EER2 | 11.2 |
Electrical & Fuel
| Voltage | 208-230V |
|---|---|
| Phase | Single Phase |
| Refrigerant | R-454B |
Shipping & Delivery
Manufacturer Warranty
Professional Installation Recommended
Most HVAC equipment must be installed and connected by a licensed professional to remain safe, code-compliant, and eligible for manufacturer warranty coverage. If you're unsure about installation requirements, contact us before you order.
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