The Lennox 27K32 M1WD012S6-1P mini-split 1-way cassette air handler is a compact, ceiling-mounted indoor unit designed to deliver efficient and directional comfort in residential and light commercial spaces. With a nominal capacity of 1.0 ton (12,000 BTU), this indoor unit is ideal for single rooms, offices, apartments, or retrofit applications where wall-mounted units are not preferred.

This 1-way cassette air handler installs flush into the ceiling, providing a clean, unobtrusive appearance while directing conditioned air in a controlled, single-direction airflow pattern. When paired with a compatible Lennox single-zone outdoor mini-split heat pump or condenser, it offers reliable cooling and heating performance with modern efficiency standards.

The M1WD012S6-1P operates on 208–230 VAC, single-phase, 60 Hz power and is engineered for quiet operation, making it suitable for bedrooms, conference rooms, and other noise-sensitive environments. It uses R-32 refrigerant, meeting current environmental and regulatory requirements while supporting high system efficiency when properly matched.

Designed for flexibility and long-term reliability, this Lennox mini-split cassette air handler is a strong solution for applications requiring discreet installation, consistent comfort, and professional-grade HVAC performance.

 

Product overview:

 

The Lennox M1WD012S6-1P is a ceiling-mounted, 1-way cassette indoor air handler for ductless mini-split systems. It provides focused airflow distribution, quiet operation, and efficient performance when paired with compatible Lennox outdoor units. Its low-profile cassette design makes it ideal for modern interiors, retrofit projects, and spaces with limited wall availability.

 

Specifications:

 

Manufacturer: Lennox
Part number: 27K32
Model number: M1WD012S6-1P
System type: Mini-split indoor air handler
Configuration: 1-way ceiling cassette
Nominal capacity: 1.0 ton (12,000 BTU)
Voltage: 208–230 VAC
Phase: 1 phase
Frequency: 60 Hz
Refrigerant: R-32
Application: Residential and light commercial
Mounting: Ceiling recessed cassette
Compatible systems: Lennox single-zone mini-split outdoor units