Durastar DRUM4260SWA & DRU1U42S2A 42,000 BTU 16.0 SEER2 Multi-Position Air Handler Side Discharge Heat Pump System - R454B

Durastar DRUM4260S2A & DRU1U48S2A – 48,000 BTU R-454B Multi-Position Air Handler Mini-Split Heat Pump System

The Durastar DRUM4260S2A and DRU1U48S2A deliver 48,000 BTU of powerful ducted heating and cooling with inverter-driven rotary compressor technology and ENERGY STAR® certified performance (select pairings). Built for flexibility, this side-discharge system supports multi-position installation and provides reliable year-round comfort with low ambient operation, all-aluminum coils, built-in IAQ ports, and a programmable DRSTAT101 thermostat included.

General Information
System Type: Multi-position air handler mini-split heat pump system (indoor & outdoor)
Indoor Model: DRUM4260S2A
Outdoor Model: DRU1U48S2A
Capacity: 48,000 BTU Heating & Cooling
Room Size: Large homes, multi-zone applications, or light commercial spaces
Operating Modes: Cool, Heat, Aux Heat, Dry, Fan, Auto
ENERGY STAR®: Yes (select pairings)
Refrigerant: R-454B, low-GWP, pre-charged (liquid 3/8″, suction 3/4″)

Key Features
• Multi-Position Installation – Vertical or horizontal left/right for flexible ducting
• Low Ambient Operation – Heating and cooling down to –13 °F
• Inverter Technology – High-efficiency rotary DC compressor
• Quiet Operation – Indoor as low as 34 dB(A), outdoor ~65 dB(A)
• Smart Control – DRSTAT101 programmable wired thermostat included
• All-Aluminum Coil – With anti-corrosive fin coating for durability
• Built-in IAQ Ports – Humidifier, dehumidifier, and fresh air compatibility
• Base Pan Heater – Protects against freezing in winter
• Safety First – A2L refrigerant leak detection system
• Optional Electric Heat – Supports 5–20 kW auxiliary heater kits
• Moisture Removal – Up to 268.3 pints/day

Specifications (Rated Conditions)
Cooling Capacity (Rated/Range): 48,000 BTU | 16,600 – 49,900 BTU
Heating Capacity (Rated/Range): 48,000 BTU | 15,300 – 49,500 BTU
SEER2 / EER2: 16.0 / 10.0
HSPF2 (Region IV/V): 8.5 / 7.2
COP (47°F / 17°F / 5°F): 3.45 / 2.47 / 1.85
Airflow (Indoor – CFM): 1,094 – 1,601 (Low to Turbo)
Operating Temp Range (Cooling/Heating): –13 °F – 122 °F / –13 °F – 75 °F
Electrical: 208/230 V • 1-Phase • 60 Hz
Indoor Unit Dimensions/Weight: 24.5″W × 22.6″D × 53″H • 163 lb net
Outdoor Unit Dimensions/Weight: 39.3″W × 19.7″D × 42.5″H • 193 lb net

Included Components
• DRUM4260S2A multi-position air handler
• DRU1U48S2A side-discharge outdoor unit
• Programmable wired thermostat (DRSTAT101)
• Built-in base pan heater

Ideal For
Contractors and homeowners needing a robust, efficient ducted solution for large residential or light commercial applications. The DRUM4260S2A & DRU1U48S2A pairing ensures reliable performance, flexible installation, and ENERGY STAR® certified comfort year-round.