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Furnace & HVAC Filters

Furnace & HVAC Filters

Shop furnace and HVAC replacement filters for residential and light-commercial heating and cooling systems. Furnace Part Source carries standard and high-efficiency filters by size, MERV rating, and equipment model to help support airflow and indoor air quality.

Use the product list below to find the correct filter by dimensions, MERV rating, or equipment model. Always confirm filter size and airflow direction before ordering to help ensure proper fit and performance.

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    Johnson Controls A-4000-156 Complete Filter Assmbly 5 Micron

    Johnson Controls

    MSRP: $539.47
    Now: $416.86
    Johnson Controls A-4000-156 Complete Filter Assmbly 5 Micron  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...
    MSRP: $539.47
    Now: $416.86
    Qty in Cart: 0
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    MSRP: $539.47
    Now: $416.86
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    Johnson Controls A-4000-141 Filter/Reducing Station

    Johnson Controls

    MSRP: $4,593.25
    Now: $3,549.33
    Johnson Controls A-4000-141 Filter/Reducing Station  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...
    MSRP: $4,593.25
    Now: $3,549.33
    Qty in Cart: 0
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    MSRP: $4,593.25
    Now: $3,549.33
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    Johnson Controls A-4000-1048 Filter Coalescing 10Scfm 3/8"

    Johnson Controls

    MSRP: $672.11
    Now: $519.36
    Johnson Controls A-4000-1048 Filter Coalescing 10Scfm 3/8"  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...
    MSRP: $672.11
    Now: $519.36
    Qty in Cart: 0
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    MSRP: $672.11
    Now: $519.36
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    York Controls S1-026-25535-000 23 1/8x24 5/8x1 Cleanable Filter

    York - Source 1

    MSRP: $76.21
    Now: $58.89
    York Controls S1-026-25535-000 23 1/8x24 5/8x1 Cleanable Filter  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum...
    MSRP: $76.21
    Now: $58.89
    Qty in Cart: 0
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    MSRP: $76.21
    Now: $58.89
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    York S1-026-25514-000 Cleanable Filter 13 5/8 x 19 5/8 x 1

    York - Source 1

    MSRP: $45.84
    Now: $35.42
    York S1-026-25514-000 Cleanable Filter 13 5/8 x 19 5/8 x 1  FurnacePartSource.com Commitment
    MSRP: $45.84
    Now: $35.42
    Qty in Cart: 0
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    MSRP: $45.84
    Now: $35.42
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    York Controls 026-37915-000 10 Micron Oil Filter

    York - Applied

    MSRP: $391.26
    Now: $302.34
    York Controls 026-37915-000 10 Micron Oil Filter  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $391.26
    Now: $302.34
    Qty in Cart: 0
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    MSRP: $391.26
    Now: $302.34
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    York Controls 026-37563-000 3/8"" Filter Drier

    York - Applied

    MSRP: $154.97
    Now: $119.75
    York Controls 026-37563-000 3/8"" Filter Drier  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $154.97
    Now: $119.75
    Qty in Cart: 0
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    MSRP: $154.97
    Now: $119.75
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    York Controls 026-35961-000 10 Micron Oil Filter

    York - Applied

    MSRP: $214.90
    Now: $166.06
    York Controls 026-35961-000 10 Micron Oil Filter   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $214.90
    Now: $166.06
    Qty in Cart: 0
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    MSRP: $214.90
    Now: $166.06
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    York Controls 026-35601-000 Oil Filter

    York - Applied

    MSRP: $288.95
    Now: $223.28
    York Controls 026-35601-000 Oil Filter   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $288.95
    Now: $223.28
    Qty in Cart: 0
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    MSRP: $288.95
    Now: $223.28
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    York Controls 026-34428-000 O-Ring Kit For Oil Filter

    York - Applied

    MSRP: $202.47
    Now: $156.46
    York Controls 026-34428-000 O-Ring Kit For Oil Filter  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order...
    MSRP: $202.47
    Now: $156.46
    Qty in Cart: 0
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    MSRP: $202.47
    Now: $156.46
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    York Controls 026-32841-000 5/8"Rotalock Filter Drier

    York - Applied

    MSRP: $54.60
    Now: $42.19
    York Controls 026-32841-000 5/8"Rotalock Filter Drier   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $54.60
    Now: $42.19
    Qty in Cart: 0
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    MSRP: $54.60
    Now: $42.19
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    York Controls 026-32839-000 Suction Filter

    York - Applied

    MSRP: $115.75
    Now: $89.44
    York Controls 026-32839-000 Suction Filter   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $115.75
    Now: $89.44
    Qty in Cart: 0
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    MSRP: $115.75
    Now: $89.44
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    York Controls 026-32358-000 Filter Drier

    York - Applied

    MSRP: $41.38
    Now: $31.98
    York Controls 026-32358-000 Filter Drier  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $41.38
    Now: $31.98
    Qty in Cart: 0
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    MSRP: $41.38
    Now: $31.98
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    York Controls 026-31654-000 Oil Filter Element

    York - Applied

    MSRP: $439.21
    Now: $339.39
    York Controls 026-31654-000 Oil Filter Element  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $439.21
    Now: $339.39
    Qty in Cart: 0
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    MSRP: $439.21
    Now: $339.39
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    York Controls 026-28173-000 1/4"SAE Filter Drier

    York Controls

    MSRP: $95.98
    Now: $72.71
    York Controls 026-28173-000 1/4"SAE Filter Drier  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $95.98
    Now: $72.71
    Qty in Cart: 0
    Price:
    MSRP: $95.98
    Now: $72.71
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    York Controls 026-13508-000 Filter Drier

    York - Applied

    MSRP: $123.26
    Now: $95.24
    York Controls 026-13508-000 Filter Drier  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $123.26
    Now: $95.24
    Qty in Cart: 0
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    MSRP: $123.26
    Now: $95.24
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    York Controls 026-11225-000 15 Micron Oil Filter

    York - Applied

    MSRP: $224.33
    Now: $173.35
    York Controls 026-11225-000 15 Micron Oil Filter  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $224.33
    Now: $173.35
    Qty in Cart: 0
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    MSRP: $224.33
    Now: $173.35
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    Lennox Y2920 Filter Cabinet

    Lennox

    MSRP: $184.78
    Now: $142.79
    Lennox Y2920  Filter Cabinet   FurnacePartSource.com Commitment Item Typically Ships within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $184.78
    Now: $142.79
    Qty in Cart: 0
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    MSRP: $184.78
    Now: $142.79
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    Lennox X8790 MERV 16 Pleated Filter 20x21x5

    Lennox

    MSRP: $253.64
    Now: $195.99
    MERV 16 Pleated Filter 20x21x5   FurnacePartSource.com Commitment Item Typically Ships within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $253.64
    Now: $195.99
    Qty in Cart: 0
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    MSRP: $253.64
    Now: $195.99
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    Lennox X8789 MERV 16 Pleated Filter 16x26x5

    Lennox

    MSRP: $209.98
    Now: $162.26
    MERV 16 Pleated Filter 16x26x5   FurnacePartSource.com Commitment Item Typically Ships within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order Requirements    
    MSRP: $209.98
    Now: $162.26
    Qty in Cart: 0
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    Price:
    MSRP: $209.98
    Now: $162.26
    Subtotal:
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Adding your products to cart

Furnace & HVAC Filters

Air filters remove dust, debris, and particulates from the air moving through a furnace or HVAC system, protecting internal components while supporting indoor air quality. A clogged or incorrectly sized filter can restrict airflow and reduce system efficiency.

Furnace Part Source carries a selection of furnace and HVAC filters in standard sizes and MERV ratings for residential and light-commercial equipment.

Common Filter Types We Carry

Common filter options include:

  • Standard pleated filters for everyday dust and debris capture.
  • Higher MERV-rated filters for improved filtration of finer particles.
  • Equipment-specific filters sized for particular furnace or air handler models.

How to Find the Right Filter

Before ordering, confirm the exact filter dimensions (length, width, and depth) either from the existing filter or the equipment's filter slot. Also check the recommended MERV rating for your system, since some HVAC equipment has airflow limitations that restrict how high a MERV rating can be used.

For best fit, compare:

  • Filter dimensions (length x width x depth)
  • MERV rating
  • Airflow direction arrow on the filter frame
  • Equipment model, if using an OEM-specific filter

Replacing Your Furnace or HVAC Filter

Regular filter replacement helps maintain airflow, protect the blower motor, and support consistent indoor air quality. Check filters monthly and replace them according to the manufacturer's recommended schedule or sooner if visibly dirty.

Need Help Choosing a Filter?

Not sure which filter size or MERV rating you need? Check the existing filter or the filter slot in your equipment, or contact Furnace Part Source for help identifying the correct replacement.

HVAC Filter FAQs

How often should I change my furnace filter?

Most furnace filters should be checked monthly and replaced every one to three months, depending on usage, filter type, and household conditions such as pets or allergies.

What does MERV rating mean?

MERV (Minimum Efficiency Reporting Value) measures how effectively a filter captures particles. Higher MERV ratings capture smaller particles but may increase airflow resistance, so confirm your system supports the rating you choose.

Can a dirty filter damage my furnace?

Yes. A clogged filter restricts airflow, which can cause the system to overheat, reduce efficiency, and place added strain on the blower motor and heat exchanger.

Which way does the airflow arrow on a filter go?

The airflow arrow should point in the direction air travels through the system, typically toward the blower or air handler. Installing a filter backward can reduce filtration efficiency.