Nance International, Inc. offers MWU-EX series Custom built thru the Wall Room Package Window Units. The room air conditioner meets the United States National Electric Code, Article 500, requirements for Class 1, Division 2, Groups C & D, Temperature code T3 Hazardous Locations. They are designed to cool living quarters, control rooms and other enclosures located in hazardous locations. It fits standard windows or equivalent through the wall applications. All operating controls are self-contained.

Cabinets are constructed of painted galvanized steel

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  • Hermetic scroll compressors
  • Copper Tube-Aluminum Fin Condenser & Evaporator Coil
  • Painted Galvanized Steel Cabinet and Base
  • Complies with NEC500 for Class 1, Div.2, Groups C & D, T3
  • Side Chasis
  • EPA Approved Refrigerant R-41 10A
  • Built in controls for room access
  • Voltage 208 / 230-1-60
  • Refrigerant R-410A


  • Copper Tube-Copper Fin Condenser Coil
  • 316 stainless steel Cabinet and / or Base
  • Condenser Coil coating spray applied or hot dipped / baked applied
  • Hot gas bypass to allow unit to operate at low ambient conditions
  • Modifications for Hazardous Area Class 1, Division 1, Groups C & D, T3
  • Custom Paint
  • CSA Third Party Certified

Hazardous duty room air conditioning certified by Nance International or they can be certified by CSA International to U.S. and Canadian standerds for class 1, Division 2, Groups C & D, T3 hazardous (classified) locations. Ideal applications are offshore oil rigs, OM-shore oil company offices, refiners, petrochemical sites, PVC or plastics plants or other hazardous areas.

1-Ton (12,000 BTU/H) 16in (1792mm) 26in (846mm) 41.5in(435mm)
2-Ton (24,000 BTU/H) 20.25in (1792mm) 28in (970mm) 41.5 (435mm)
2.5-Ton (28,000 BTU/H) 20.25in (2156mm) 28in (1069mm) 41.5in (570mm)
3-Ton (36,000 BTU/H 20.25 (2156mm) 28in (1069mm) 41.5in (570mm)
  • Units are rated at 95°F ambient with 80°F.D.B and 67°F.W.B return air temperature.
  • Specifications are subject to change without notice

mwu specs

T +1 877 626 2322 (Toll Free)
F +1 409 838 6219

Corporate Office

Tel: (409) 838-6127
2915 Milam St.
Beaumont, TX 77701