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Pioneer

Pioneer® Quantum Ultra™ 48,000 BTU 19.8 SEER2 230V Floor/Ceiling/Low-Wall Ductless Mini-Split Air Conditioner Inverter Heat Pump

Model: UYB048GMSI20RL-10S SKU: UYB048GMSI20RL-10S

4 Ton | SEER2 19.8 | R-454B | 208-230V

48000 BTU cooling capacity
Up to 19.8 SEER2 rated efficiency
Uses R-454B refrigerant
Runs on 208-230V power

$4,828.00 $6,899.00 Save 30% Free Shipping

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Installation Kit Options

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Sizes and capacities vary between models. Check each part against your unit before ordering, or ask us and we'll confirm the fit.

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At a Glance

Key Specifications

System Type Mini-Split

Capacity 48000 BTU

Tonnage 4 Ton

SEER2 19.8

Voltage 208-230V · Single Phase

Refrigerant R-454B

Overview

Product Overview

Summary

High Efficiency Quantum Ultra Floor/Ceiling/Low-Wall Ductless Split Heat Pump System
Cooling capacity: 48,000 BTU/H with 19.8 SEER2 / 9.5 EER2 efficiency
Heating capacity: 50,000 BTU/H with 12.0 HSPF2 / 2.82 COP2 efficiency
Voltage: 208/230V, 60Hz, 1Ph
Floor/Ceiling/Low-Wall Mounted Ductless Air Conditioning & Heating System
Variable-Speed DC Inverter Driven Performance
Factory-Precharged with Environmentally Friendly R454b Refrigerant
Ultra Low Ambient Range Operation (As low as -13°F in Heating / As high as 131°F in Cooling)

Features

Heat Pump with Cooling, Heating, Dry, and Ventilation Modes
Dual-Drainage Ports
Washable, Reusable Air Filters
Dual-Axis Airflow (Motorized Up-Down and Left-Right Louvers)
Functional Remote with:
- ECO and SLEEP Modes, for Energy-Conservation
- Timer On/Off Control
- TURBO, for Times of High-Demand
- Self-Clean Cycle
- MEMORY, to Recall Favorite Settings
- FOLLOW ME, to Detect and Adjust to Local Temperature

Technical Information & Performance

System Kit
- Power Supply: 208~230V, 60Hz, 1Ph
- Cooling Rated Capacity: 48,000 BTU/h
- Cooling Capacity Range: 10,100~50,000 BTU/h
- Cooling SEER2: 19.9 BTU/W.h
- Cooling EER2: 9.5 BTU/W.h
- Heating Rated Capacity: 50,000 BTU/h
- Heating Capacity Range: 15,800~59,100 BTU/h
- Heating HSPF2 (Region IV/V): 12.0 / 7.8 BTU/W.h
- Heating C.O.P.2 (47°F/5°F): 2.82 / 1.95 W/W
- Refrigerant Type: R454b
- Recommended Room Size: 1,400~1,800 sq ft
- Minimum Room Size (Ceiling Suspended): 143 sq ft
- Minimum Room Size (Floor/Low Wall): 700 sq ft
- Piping Diameter: 3/4" (Gas) / 3/8" (Liquid)
- AHRI Reference: 218010996
Indoor Unit
- Part Number: UB048GMSILDFHG
- Air Flow (Turbo/Hi/Med/Lo/Mute): 1,354 / 1,236 / 1,083 / 800 / 665 CFM
- Sound Level (Turbo/Hi/Med/Lo/Mute): 55 / 53 / 49 / 39 / 34 dB(A)
- Product Dimensions (WDH): 65" x 26"-5/8 x 9"-1/4 Inches
- Carton Dimensions (WDH): 68"-3/8 x 30" x 12"-1/4 Inches
- Net / Gross Weight: 89.0 / 105.0 lbs
Outdoor Unit
- Part Number: YN048GMSI20RUG
- Breaker Needed: 45A (double-pole)
- Sound Level: 64 dB(A)
- Net Dimensions (WDH): 37"-1/2 x 16"-3/8 x 52"-1/2 Inches
- Carton Dimensions (WDH): 43"-1/8 x 19"-1/2 x 57"-1/2 Inches
- Net / Gross Weight: 208.8 / 237.5 lbs

Dimension Chart

Technical Specifications

Performance

System Type	Mini-Split
Capacity	48000 BTU
Tonnage	4 Ton
SEER2	19.8
EER2	9.5
HSPF2	12.0

Electrical & Fuel

Voltage	208-230V
Phase	Single Phase
Refrigerant	R-454B

Shipping & Delivery

Orders typically ship within 1-3 business days. Freight items are delivered by appointment to a curbside address; someone must be present to receive and inspect the shipment. Inspect for damage before signing. Returns are accepted within 30 days on unused, uninstalled equipment in original packaging -- return shipping and a restocking fee may apply. See our Shipping Policy and Return & Refund Policy for full terms.

Manufacturer Warranty

Covered by Pioneer's limited warranty. Warranty coverage generally requires installation by a licensed HVAC contractor and, on many brands, product registration after installation. Refer to Pioneer's warranty documentation for the full terms that apply to this model.

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.

Need an installer? Get options What the job involves →

Before You Order

Make sure it is the right size, and that you have the rest of it

Most outdoor units ship alone. If you are not certain of the capacity, or of what has to go with this unit, these two will work it out with you.

System Finder Draw your space in 3D and get a capacity range, with equipment that fits it. Takes about a minute. Size it in 3D → Complete System Builder Start from the outdoor unit. Only the coil, air handler, heat kit, line set and thermostat matched to it are ever offered. Build a system →

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