Tired of rooms that are always too hot or too cold? Whether it's an upstairs bedroom that never cools down, a home office that needs extra comfort, or a house without traditional ductwork, the Lennox MMLD Multi-Zone Ductless Mini-Split System offers a flexible way to heat and cool different areas of your home.
Unlike conventional central HVAC systems that distribute conditioned air through ductwork, the Lennox MMLD connects one outdoor heat pump to multiple compatible indoor units. Each indoor unit serves a designated area, allowing you to set different temperatures for different rooms or zones.
Its inverter-driven compressor adjusts operation as heating and cooling needs change, helping maintain consistent temperatures without repeatedly running at full capacity.
The MMLD is an attractive option for older homes without existing ductwork, room additions, converted garages, and homeowners who want more personalized temperature control. Wall-mounted and other compatible indoor-unit styles may be available depending on the selected system.
Because this is a heat pump, it provides both heating and cooling without requiring a separate gas furnace. However, all connected indoor zones operate within the system's available capacity and operating mode limitations.
In Demand Plumbing, Heating & Air can evaluate your home's layout, calculate heating and cooling requirements, recommend appropriate indoor-unit locations, and professionally install a Lennox multi-zone system designed around your comfort needs.
Additional features
- Variable-Capacity Compressor — Adjusts heating and cooling output as demand changes to help maintain consistent indoor temperatures.
- Ductless Installation Flexibility — Ideal for homes without existing ductwork, room additions, and spaces that need individualized temperature control.
- SmartThings App Integration — Supports remote temperature adjustments, system monitoring, and compatible smart-home automation.
- Quiet Operation — Designed for reduced operating noise compared with many traditional heating and cooling configurations.
- 1. Durable Outdoor Cabinet — Galvanized steel construction with a baked-on, powder-coated finish helps protect the equipment against outdoor exposure.
Specifications
- Product Series
- MMLD Multi-Zone
- System Type
- Ductless mini-split heat pump
- Heating and Cooling
- Both
- Maximum Indoor Zones
- Up to 5
- Cooling Efficiency
- Up to 23.00 SEER2
- Heating Efficiency
- Up to 10.50 HSPF2
- Cold-Climate Performance
- Maintains 100% heating capacity at 5°F under specified conditions
- Minimum Heating Operating Temperature
- As low as -13°F
- Refrigerant
- Lower-GWP, 2025-compliant refrigerant; exact designation requires model-specific verification
Warranty information
Manufacturer Warranty:
- 5-year limited warranty on covered components.
- 7-year limited warranty on the compressor.
These terms are published on the official Lennox MMLD product page. Coverage conditions, exclusions, registration requirements, and eligibility must be confirmed using the applicable warranty certificate.