The Lennox 27K04 mini-split air handler, model M33D018S6-1P, is a 1.5 ton 4-way ceiling cassette indoor unit designed for efficient and uniform air distribution in residential and light commercial HVAC applications. This cassette-style air handler operates on 208–230 VAC, single-phase, 60 Hz power and is engineered to deliver reliable cooling and heating performance when paired with compatible Lennox mini-split outdoor systems.

Featuring a compact, ceiling-mounted 4-way cassette design, the Lennox 27K04 air handler provides even airflow in all directions, helping eliminate hot and cold spots while maintaining consistent indoor comfort. Its low-profile installation makes it ideal for spaces where wall-mounted units are not preferred, such as offices, retail areas, restaurants, and modern residential interiors.

Built for durability and long-term operation, this mini-split cassette air handler supports quiet operation, efficient heat exchange, and precise temperature control. The M33D018S6-1P model is well-suited for both new construction and retrofit installations, offering contractors a dependable indoor solution that integrates seamlessly into multi-zone or single-zone mini-split systems.

Whether used in commercial environments or high-end residential projects, the Lennox 27K04 1.5 ton mini-split 4-way cassette air handler delivers balanced airflow, dependable performance, and the quality expected from Lennox HVAC equipment.

 

Specifications:

• Manufacturer: Lennox
• Part number: 27K04
• Model number: M33D018S6-1P
• System type: Mini-split indoor air handler
• Configuration: 4-way ceiling cassette
• Cooling capacity: 1.5 ton
• Electrical: 208–230 VAC
• Phase: 1 phase
• Frequency: 60 Hz
• Application: Residential and light commercial
• Installation type: Ceiling-mounted cassette
• Compatible with matched Lennox mini-split outdoor units