Lennox Furnaces

Lennox® furnaces are some of the most efficient and quietest heating systems you can buy*. They’re engineered for perfect warmth and savings.

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ML180V Gas Furnace
Single-stage, 80% fuel-efficient gas furnace with variable-speed fan motor

Consider the bar raised.

Welcome to the Lennox® standard of excellence. Merit® Series is the introductory product line that raises the bar for heating and cooling equipment. Don’t settle when it comes to the air inside your home–ask for more. Ask for Merit.


Ask More from Your Air.


Energy Efficiency

Powerful energy savings.

Annual Fuel Utilization Efficiency, or AFUE, measures how efficiently your furnace uses fuel. An energy rating of up to 97% AFUE means this furnace can lower your energy bills year-round, while still keeping your home warm and quiet. It may even help you qualify for energy rebates.


Sound Absorbing Materials

A lot of comfort, without a lot of noise.

Made with special sound absorbing materials and sturdy burners to reduce noise, this furnace delivers quiet warmth for a more peaceful environment.

Sound-absorbing materials and sturdy burners reduce noise for quiet operation.


Blower Motors

Constant torque, constant efficiency.

Power Saver™ constant-torque motor adjusts airspeed based on demand. This helps the furnace use less energy in both heating and cooling modes.

A quieter upgrade over an older motor that offers greater comfort and 33% more efficiency.