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Wall-Mount Air Conditioner Two-Stage Step Capacity

Exterior Wall-Mount

Air Conditioner

WM-STEP CAPACITY Series

W3SAC - W5SAC

The world’s most energy efficient wall-mounted air conditioner features a multi-step capacity compressor for increased efficiency, quieter operation and improved reliability. Simple thermostatic control seamlessly stages the compressor and indoor airflow rate between high and low capacity operations without cycling the compressor to maximize comfort, humidity control, energy efficiency and overall reduction in compressor cycling for improved system life. Factory or field installed accessories are available to meet specific job requirements.

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Cabinet Colors
color swatch
X = Beige
color swatch
1 = White
color swatch
4 = Buckeye Gray
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5 = Desert Brown
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8 = Dark Bronze
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S = Stainless Steel
color swatch
A = Aluminum
MULTI-TEC PLC W42-W72

W3SAC - W5SAC

  • Up to 15.2 IPLV cooling capacity
  • 3-5 ton cooling capacity
  • Single and three-phase power options
  • Copeland step-capacity scroll compressor
  • ECM indoor blower motor
  • R-410A green refrigerant
  • Aluminum finned copper coils
  • Optional electric heat kits
  • Optional ventilation alternatives
  • AHRI Certified
  • ETL Listed (US and Canada)

* For full product specifications see Product Resources tab below.

Model Group Ton Capacity Electrical Supply/Return
(HxW) & Spread (in)
Cabinet
Dimensions (in)
(WxDxH)
W3SA 3
  • 230/208-60-1
  • 230/208-60-3
  • 460-60-3
  • 10x30
  • 16x30
  • 30
46x29.5x99
W4SA 4
  • 230/208-60-1
  • 230/208-60-3
  • 460-60-3
  • 10x30
  • 16x30
  • 30
46x29.5x90
W5SA 5
  • 230/208-60-1
  • 230/208-60-3
  • 460-60-3
  • 10x30
  • 16x30
  • 30
46x29.5x99

  • 2" MERV8. MERV11 or MERV13 Air Filters
  • UV-C LED Light w/Air Filters
  • Ventilation Options
  • Supply/Return Acoustical Accessories
  • Supply/Return Grilles
  • Isolation/Sound Curbs
  • Thermostats
  • CompleteStat
  • MC5300/MC5600 Lead/Lag Controller
  • MC40002 Series Lead/Lag Controller
  • TEC40 Lead/Lag Controller
  • DC3000 Series Lead/Lag Controller

  • Ventilation Options for Model Group(s)- W3SA, W4SA, W5SA :
    • Blank Off Plate (No Ventilations)
    • Barometric Fresh Air Damper
    • Commercial Room Ventilator
    • Economizer
    • Energy Recovery Ventilator