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You are here: Home > Shop By Manufacturer > Lennox
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Lennox 1-Inch Pleated Filters Lennox BMAC & Supplies Lennox Electronic Air Cleaners (EAC)
Lennox HEPA & Supplies Lennox PMAC & Supplies Lennox HC16 & Supplies
Lennox PureAir Systems & Supplies
We specialize in brand new, high-quality Lennox products! As a "brick and mortar" Lennox dealer for over 25 years, we sell top-quality Lennox air filters, Lennox humidifiers, Lennox thermostats, and other OEM Lennox products that we have installed and tested in the field. That means you can be confident that you won't make a mistake when you buy a Lennox filter or humidifier from DiscountFurnaceFilter.com.

A few of our most popular items are the Lennox X0445 and Lennox X0444 pleated media filters that fit the Lennox PMAC and Space-Gard media filter cabinets. We also carry Lennox X0586, Lennox X0581, and other popular Lennox boxed media filters.  In addition, the Lennox X6672 and X6675 MERV 16 Lennox media filters are gaining popularity because of their extremely high filtration capabilities.

Whether you need a Lennox bypass humidifier or Lennox programmable thermostat to make your entire home more comfortable, or a Lennox furnace filter or PureAir filter, you came to the right place.
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Outdoor Temperature Sensor for Lennox Elite Thermostat Outdoor Temperature Sensor for Lennox Merit and Comfortsense Thermostats Lennox MF1-20 20" x 25" x 5" Furnace Filter - X1152
Our Price: $24.95
Our Price: $24.95
Our Price: $26.99
Lennox X2658 Outdoor Temperature Sensor Lennox MF1-20 20
Outdoor Temperature Sensor for Lennox Elite Thermostat. Designed to work with the Lennox Elite Touch-Screen Programmable Thermostat. Lennox X2658 Outdoor Temperature Sensor for Lennox Merit / Comfortsense Thermostat. Designed to work with the Lennox Merit & Comfortsense Thermostats. Lennox MF1-20 air cleaner. 20"x25"x5" fits the MF1-20 air cleaner.
Lennox BMAC 16" x 25" x 3" Furnace Filter - X0581 Lennox BMAC 16" x 20" x 5" Furnace Filter - X0582 Lennox BMAC 16" x 25" x 5" Furnace Filter - X0583
Our Price: $27.00
Our Price: $27.00
Our Price: $27.00
Lennox BMAC 16 Lennox BMAC 16 Lennox BMAC 16
Lennox Healthy Climate Merv 10 replacement furnace filter. Filter dimensions: 16" x 25" x 3". X0581 Lennox BMAC (Boxed Media Air Cleaner) MERV 10 replacement furnace filter. 16" x 20" x 5". X0582 Lennox BMAC (Boxed Media Air Cleaner) MERV 10 replacement furnace filter. 16" x 25" x 5". X0583
Lennox BMAC 16" x 26" x 5" Furnace Filter - X0584 Lennox BMAC 20" x 20" x 5" Furnace Filter - X0585 Lennox BMAC 20" x 25" x 5" Furnace Filter - X0586
Our Price: $27.00
Our Price: $27.00
Our Price: $27.00
Lennox BMAC 16 Lennox BMAC 20 Lennox BMAC 20
Lennox BMAC (Boxed Media Air Cleaner) MERV 10 replacement furnace filter. 16" x 26" x 5". X0584 Lennox BMAC (Boxed Media Air Cleaner) MERV 10 replacement furnace filter. 20" x 20" x 5". X0585 Lennox BMAC (Boxed Media Air Cleaner) MERV 10 replacement furnace filter. 20" x 25" x 5". X0586
Lennox PMAC-20C Replacement Filter - X0445 Lennox PMAC-12C Replacement Filter - X0444 Lennox PCO-20C MERV 10 Pleated Filter - X5422
Our Price: $27.00
Our Price: $27.00
Our Price: $28.95
Lennox PMAC-20C Replacement Filter - X0445 Lennox PMAC-12C Replacement Filter - X0444 Lennox PCO-20U MERV 10 Replacement Filter - X5422
Lennox PMAC (Pleated Media Air Cleaner) MERV 10 replacement furnace filter - X0445 Lennox PMAC (Pleated Media Air Cleaner) MERV 10 replacement furnace filter - X0444 Lennox PCO-20U MERV 10 replacement furnace filter - X5422
Lennox PureAir PCO-12C Replacement Filter Lennox PureAir PCO-20C Replacement Filter Lennox PureAir PCO-12C/20C UVA Lamp (Single)
Our Price: $29.00
Our Price: $29.00
Our Price: $29.99
Lennox PureAir PCO-12C MERV 10 replacement filter. Lennox PureAir PCO-20C MERV 10 replacement filter. Lennox PureAir PCO-12C/20C replacement UVA lamp (single)
Lennox Healthy Climate 25" x 25" x 1" Furnace Filter (4-Pack) Lennox Healthy Climate 14" x 20" x 1" Furnace Filter (4-Pack) Lennox Healthy Climate 15" x 20" x 1" Furnace Filter (4-Pack)
Our Price: $29.99
Our Price: $29.99
Our Price: $29.99
Lennox Healthy Climate 25" x 25" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox Healthy Climate 14" x 20" x 1" replacement furnace filters (4-Pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox Healthy Climate 15" x 20" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter.
Lennox Healthy Climate 16" x 20" x 1" Furnace Filter (4-Pack) Lennox Healthy Climate 20" x 20" x 1" Furnace Filter (4-Pack) Lennox Healthy Climate 14" x 25" x 1" Furnace Filter (4-Pack)
Our Price: $29.99
Our Price: $29.99
Our Price: $29.99
Lennox Healthy Climate 16" x 20" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox Healthy Climate 20" x 20" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox Healthy Climate 14" x 25" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter.
Lennox Healthy Climate 16" x 25" x 1" Furnace Filter (4-Pack) Lennox Healthy Climate 18" x 25" x 1" Furnace Filter (4-Pack) Lennox Healthy Climate PureAir UV Lamp PCO20-28/16-28/14-23 - X8794
Our Price: $29.99
Our Price: $29.99
Our Price: $29.99
Lennox X8794 UV Lamp
Lennox Healthy Climate 16" x 25" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox Healthy Climate 18" x 25" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox Healthy Climate PureAir UV Lamp PCO20-28/16-28/14-23 - X8794
Lennox Healthy Climate HEPA-40/60 Carbon Pre-Filter Lennox HEPA-20 Replacement Charcoal Carbon Filter Lennox Healthy Climate HEPA-20 Carbon Pre-Filter
Our Price: $33.95
Our Price: $33.95
Our Price: $33.95
Lennox Healthy Climate HEPA-40/60 Carbon Pre-Filter. Lennox HEPA-20 Replacement Charcoal Carbon Filter. Use for 3rd-stage filtration for removing odors. 180 CFM Model for up to 1500 square feet. Replace every 3-6 months. Lennox Healthy Climate HEPA-20 Carbon Pre-Filter.
Lennox HEPA-40/60 Replacement Foam Pre-Filter Lennox Healthy Climate 20" x 25" x 1" Furnace Filter (4-Pack) Lennox HEPA-40/60 Replacement Charcoal Carbon Filter
Our Price: $34.95
Our Price: $34.95
Our Price: $39.95
Lennox HEPA-40/60 Replacement Foam Pre-Filter. 320 & 500 CFM Models for up to 4000 square feet. Replace every 10-12 months. Lennox Healthy Climate 20" x 25" x 1" replacement furnace filters (4-pack). Merv 8 filtration in a 1-inch thick replacement filter. Lennox HEPA-40/60 Replacement Charcoal Carbon Filter. 320 & 500 CFM Models for up to 4000 square feet. Replace every 3-6 months.
Lennox ComfortSense 3000 Thermostat (1 Heat / 1 Cool) Lennox ComfortSense 3000 Heat Pump Thermostat (2 Heat / 1 Cool) Lennox BMAC 20" x 26" x 5" Furnace Filter - X0587 - (2-Pack)
Our Price: $44.95
Our Price: $49.99
Our Price: $51.95
Lennox BMAC 20
Lennox ComfortSense 3000 Thermostat. 1 Stage of heating and 1 Stage of cooling control for standard systems! Precise temperature control at the touch of a button. Lennox ComfortSense 3000 Heat Pump Thermostat. 2 Stages of heating and 1 Stage of cooling control for heat pump or dual-fuel systems! Precise temperature control at the touch of a button. Convenient 2-Pack of Lennox BMAC (Boxed Media Air Cleaner) MERV 10 replacement furnace filters. 20" x 26" x 5". X0587
(2-PACK) Lennox PMAC-20C Replacement Filters - X0445 (2-PACK) Lennox PMAC-12C Replacement Filters - X0444 Lennox HEPA-20 Optional Carbon Canister - 94X98
Our Price: $51.95
Our Price: $51.95
Our Price: $79.95
Lennox PMAC-20C Replacement Filter - X0445 Lennox PMAC-12C Replacement Filter - X0444
Convenient 2-PACK of Lennox PMAC (Pleated Media Air Cleaner) MERV 10 replacement furnace filters - X0445 Convenient 2-PACK of Lennox PMAC (Pleated Media Air Cleaner) MERV 10 replacement furnace filters - X0444 Lennox HEPA-20 Optional Carbon Canister - 94X98.
Lennox PureAir X8788 PCO20-28 MERV 16 Filter Lennox PureAir X8789 PCO16-28 MERV 16 Filter Lennox PureAir PCO-12C MERV 16 Replacement Filter
Our Price: $94.95
Our Price: $94.95
Our Price: $94.95
Lennox X8788 Lennox X8789
Lennox PureAir X8788 PCO20-28 MERV 16 Filter Lennox PureAir X8789 PCO16-28 MERV 16 Filter Lennox PureAir PCO-12C MERV 16 replacement filter.
Lennox PureAir PCO14-23 MERV 16 Filter Lennox PureAir PCO-20C MERV 16 Replacement Filter Lennox PMAC-12C MERV 16 Replacement Filter - X5425
Our Price: $94.95
Our Price: $94.95
Our Price: $94.95
Lennox X8790 Filter Lennox PMAC-12C MERV 16 Replacement Filter - X5425
Lennox PureAir PCO14-23 MERV 16 Filter Lennox PureAir PCO-20C MERV 16 Replacement Filter Lennox PMAC (Pleated Media Air Cleaner) MERV 16 replacement furnace filter - X5425
Lennox PMAC-20C MERV 16 Replacement Filter - X5424 Lennox Healthy Climate WB12 Humidifier Lennox HEPA-20 Replacement HEPA Filter
Our Price: $94.95
Our Price: $109.99
Our Price: $114.95
Lennox PMAC-20C MERV 16 Replacement Filter - X5424
Lennox PMAC (Pleated Media Air Cleaner) MERV 16 replacement furnace filter - X5424 Lennox Healthy Climate WB12 Humidifier. Effective, whole-house humidity control. Equivalent to the Aprilaire 550 Humidifier. Lennox HEPA-20 Replacement HEPA Filter Media. Best possible air-filtration performance. 180 CFM Model for up to 1500 square feet. Replace every 2-5 years.
Lennox PureAir PCO-12C UVA Lamp Kit (4-Pack) Lennox Healthy Climate WB17 Humidifier Lennox Healthy Climate BMAC-12C Box Media Air Cleaner (No Longer Available)
Our Price: $119.95
Our Price: $119.99
Our Price: $124.95
Lennox PureAir PCO-12C UVA Replacement Lamp Kit (4-Pack) Lennox Healthy Climate WB17 Humidifier. Effective, whole-house humidity control. Equivalent in capacity to the Aprilaire 400 & 600 Humidifier. Lennox Healthy Climate BMAC-12C Box Media Air Cleaner. Multi-position MERV 8 performance to capture particles as small as 0.3 micron.
Lennox Healthy Climate BMAC-20C Box Media Air Cleaner (No Longer Available) Lennox PureAir PCO14-23 Repl Mesh Insert Lennox Healthy Climate PureAir Annual Maintenance Kit for PCO16-28
Our Price: $134.95
Our Price: $135.00
Our Price: $135.00
Lennox X8793 Metal Mesh Insert PCO16-28 Annual Maintenance Kit
Lennox Healthy Climate BMAC-20C Box Media Air Cleaner. Multi-position MERV 8 performance to capture particles as small as 0.3 micron. Lennox PureAir PCO14-23 Repl Mesh Insert Lennox Healthy Climate PureAir Annual Maintenance Kit for PCO16-28
Lennox Healthy Climate PureAir Annual Maintenance Kit for PCO20-28 Lennox Healthy Climate PureAir Annual Maintenance Kit for PCO14-23 Lennox Healthy Climate PureAir Metal Mesh Insert for PCO16-28 - X8792
Our Price: $135.00
Our Price: $135.00
Our Price: $135.00
PCO20-28 Annual Maintenance Kit PCO14-23 Annual Maintenance Kit - X8797 Lennox X8792 Metal Mesh Insert
Lennox Healthy Climate PureAir Annual Maintenance Kit for PCO20-28 Lennox Healthy Climate PureAir Annual Maintenance Kit for PCO14-23 Lennox Healthy Climate PureAir Metal Mesh Insert for PCO16-28 - X8792
Lennox Healthy Climate PureAir Metal Mesh Insert for PCO20-28 - X8791 Lennox HEPA-40/60 Replacement Charcoal Carbon Canister Lennox Healthy Climate PMAC-12C High Efficiency Media Air Cleaner
Our Price: $135.00
Our Price: $139.95
Our Price: $159.95
Lennox X8791 Metal Mesh Insert Lennox 98X75
Lennox Healthy Climate PureAir Metal Mesh Insert for PCO20-28 - X8791 Lennox HEPA-40/60 Replacement Charcoal Carbon Filter. Use for 3rd-stage filtration for removing odors. Replace every 3-6 months. Lennox Healthy Climate PMAC-12C High Efficiency Media Air Cleaner. Multi-position MERV 10 performance to capture particles as small as 1 micron.
Lennox PureAir PCO-20C Metal Insert Lennox PureAir PCO-12C Metal Insert Lennox Healthy Climate PMAC-20C High Efficiency Media Air Cleaner
Our Price: $162.29
Our Price: $162.29
Our Price: $164.95
Lennox PureAir PCO-20C Replacement Metal Insert Lennox PureAir PCO-12C Replacement Metal Insert Lennox Healthy Climate PMAC-20C High Efficiency Media Air Cleaner. Multi-position MERV 10 performance to capture particles as small as 1 micron.
Lennox Healthy Climate WP18 Humidifier Lennox PureAir PCO-12C MERV 16 Upgrade Kit without Insert - X8346 Lennox PureAir PCO-20C UVA Lamp Kit (6-Pack)
Our Price: $169.95
Our Price: $175.00
Our Price: $179.95
Lenox Healthy Climate Model WP18 Lennox X8346
Lennox Healthy Climate WP18 Humidifier - power humidification for homes up to 4,200 square feet.  Equivalent to the Aprilaire 700M humidifier. Lennox PureAir PCO-12C MERV 16 UPGRADE KIT WITHOUT INSERT - X8346 Lennox PureAir PCO-20C UVA Replacement Lamp Kit (6-Pack)
Lennox Comfortsense 7000 L7742U Thermostat LN COMFORTSENSE 5000 L5732U Lennox SignatureStat Home Comfort Control (1 Heat / 1 Cool)
Our Price: $184.95
Our Price: $184.95
Our Price: $205.95
Lennox Comfortsense 7000 Lennox Comfortsense 5000
Lennox Comfortsense 7000 L7742U Thermostat! Multi-stage performance for any system, including dual-fuel! Precise temperature control with a touch-screen interface. LN COMFORTSENSE 5000 L5732U Lennox SignatureStat Home Comfort Control. 1 Stage of heating and 1 Stage of cooling control for standard systems! Precision, programmable humidity and temperature control in a sleek, attractive design.
Lennox HEPA-40/60 Replacement HEPA Filter Lennox PureAir PCO-20C MERV 16 Upgrade Kit without Insert - X8344 Lennox SignatureStat Home Comfort Control (2 Heat / 2 Cool)
Our Price: $214.95
Our Price: $215.00
Our Price: $216.00
Lennox X8344
Lennox HEPA-40/60 Replacement HEPA Filter Media. Best possible air-filtration performance. Compatible with both 320 & 500 CFM Models for up to 4000 square feet. Replace every 2-5 years. Lennox PureAir PCO-20C MERV 16 UPGRADE KIT WITHOUT INSERT - X8344 Lennox SignatureStat Home Comfort Control. 2 Stages of heating and 2 Stages of cooling control for NON-HEAT PUMP systems! Precision, programmable humidity and temperature control in a sleek, attractive design.
Lennox SignatureStat Home Comfort Control (3 Heat / 2 Cool) HEAT PUMP Lennox PureAir PCO-12C MERV 16 Upgrade Kit with Insert - X8347 Lennox PureAir PCO-20C MERV 16 Upgrade Kit with Insert - X8345
Our Price: $229.00
Our Price: $275.00
Our Price: $295.00
Lennox X8347 Lennox X8345
Lennox SignatureStat Home Comfort Control. 3 Stages of heating and 2 Stages of cooling control for HEAT PUMP or dual-duel systems! Precision, programmable humidity and temperature control in a sleek, attractive design. Lennox PureAir PCO-12C MERV 16 UPGRADE KIT WITH INSERT - X8347 Lennox PureAir PCO-20C MERV 16 UPGRADE KIT WITH INSERT - X8345
Lennox Healthy Climate HEPA-20 HEPA By-pass Filtration Unit Lennox Healthy Climate HEPA-40 HEPA By-pass Filtration Unit Lennox Healthy Climate HEPA-60 HEPA By-pass Filtration Unit
Our Price: $419.95
Our Price: $579.95
Our Price: $849.95
Lennox Healthy Climate HEPA-20 HEPA By-pass Filtration Unit. Best possible air-filtration performance. 180 CFM Model for up to 1500 square feet. Lennox Healthy Climate HEPA-40 HEPA By-pass Filtration Unit. Best possible air-filtration performance. 320 CFM Model for up to 2500 square feet. Lennox Healthy Climate HEPA-60 HEPA By-pass Filtration Unit. Best possible air-filtration performance. 500 CFM Model for up to 4000 square feet.