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Furnace & HVAC Replacement Parts

Furnace & HVAC Replacement Parts

Shop the full range of furnace and HVAC replacement parts at Furnace Part Source, covering heating, cooling, and control components for residential, commercial, and industrial equipment. Browse by category or search by exact part number to find the right replacement fast.

Use the category filters below to narrow results by part type, including actuators, assemblies, blower motors, burners, capacitors, control boards, coils, contactors, dampers, drain pans, heating elements, flame sensors, ignitors, motors, switches, transformers, and wiring.

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    Nu-Calgon 4900-35 MINI FLEXIBLE AIR CLEANER

    Nu-Calgon

    MSRP: $315.76
    Now: $239.21
    Nu-Calgon 4900-35 MINI FLEXIBLE AIR CLEANER  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $315.76
    Now: $239.21
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    MSRP: $315.76
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    Nu-Calgon 4387-01 TANKLESS WTR HTR KIT DESCALER

    Nu-Calgon

    MSRP: $502.26
    Now: $388.11
    Nu-Calgon 4387-01 TANKLESS WTR HTR KIT DESCALER  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $502.26
    Now: $388.11
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    Nu-Calgon 4050-12 EASYSEAL DIRECT INJECT-UV 6PK

    Nu-Calgon

    MSRP: $508.93
    Now: $385.55
    Nu-Calgon 4050-12 EASYSEAL DIRECT INJECT-UV 6PK  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $508.93
    Now: $385.55
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    Nu-Calgon 4050-02 A/C EASYSEAL 2+1 DISPLAY

    Nu-Calgon

    MSRP: $202.26
    Now: $153.23
    Nu-Calgon 4050-02 A/C EASYSEAL 2+1 DISPLAY  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $202.26
    Now: $153.23
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    Nu-Calgon 3130-34 POWER SUPPLY SWITCHING 24VDC

    Nu-Calgon

    MSRP: $438.64
    Now: $338.95
    Nu-Calgon 3130-34 POWER SUPPLY SWITCHING 24VDC  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $438.64
    Now: $338.95
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    MSRP: $438.64
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    Nu-Calgon 4900-10 COMMERCIAL IAQ ION GENERATOR

    Nu-Calgon

    MSRP: $919.94
    Now: $710.86
    Nu-Calgon 4900-10 COMMERCIAL IAQ ION GENERATOR   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $919.94
    Now: $710.86
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    Nu-Calgon 4614-Y8 MICRO-PLUS 16

    Nu-Calgon

    MSRP: $153.24
    Now: $118.41
    Nu-Calgon 4614-Y8 MICRO-PLUS 16  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $153.24
    Now: $118.41
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    Nu-Calgon 4314-46 EMKARATE 32H GALLON

    Nu-Calgon

    MSRP: $188.18
    Now: $145.41
    Nu-Calgon 4314-46 EMKARATE 32H GALLON   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $188.18
    Now: $145.41
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    Nu-Calgon 4300-38 Rx11-FLUSH LIQUID STARTER KIT

    Nu-Calgon

    MSRP: $244.83
    Now: $189.18
    Nu-Calgon 4300-38 Rx11-FLUSH LIQUID STARTER KIT   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $244.83
    Now: $189.18
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    Nu-Calgon 4300-08 Rx11-FLUSH STARTER KIT

    Nu-Calgon

    MSRP: $235.42
    Now: $181.92
    Nu-Calgon 4300-08 Rx11-FLUSH STARTER KIT Item considered HAZARDOUS by UPS and will ship USPS Priority FurnacePartSource.com Commitment
    MSRP: $235.42
    Now: $181.92
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    Nu-Calgon 4185-40 GEL TABS-5 TON 40 COUNT

    Nu-Calgon

    MSRP: $191.73
    Now: $145.25
    Nu-Calgon 4185-40 GEL TABS-5 TON 40 COUNT  FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - EverytimeNo Minimum Order Requirements
    MSRP: $191.73
    Now: $145.25
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    MSRP: $191.73
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    Nu-Calgon 4313-46 EmkaratePOE Oil 22H 1Gallon

    Nu-Calgon

    MSRP: $218.10
    Now: $165.23
    Nu-Calgon 4313-46 EmkaratePOE Oil 22H 1Gallon   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $218.10
    Now: $165.23
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    MSRP: $218.10
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    Nu-Calgon 4300-15 Rx11-FLUSH 13 LB TANK

    Nu-Calgon

    MSRP: $1,030.49
    Now: $780.68
    Nu-Calgon 4300-15 Rx11-FLUSH 13 LB TANK   FurnacePartSource.com Commitment Item Typically Ships Within the Same Business Day Brand-New Genuine Parts - Everytime No Minimum Order...
    MSRP: $1,030.49
    Now: $780.68
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    MSRP: $1,030.49
    Now: $780.68
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    Nu-Calgon 4300-11 Rx11-Flush Canister 2 Lb

    Nu-Calgon

    MSRP: $180.16
    Now: $136.49
    Nu-Calgon 4300-11 Rx11-FLUSH CANISTER 2 LB Must be purchased in mutiples of 4 each! Nu-Calgon 4300-11 Rx11-Flush Canister 2 Lb
    MSRP: $180.16
    Now: $136.49
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Furnace & HVAC Replacement Parts

This is the master category for every furnace and HVAC replacement part carried by Furnace Part Source, spanning heating, cooling, and control components across residential, commercial, and industrial equipment. Whether you're troubleshooting a specific failure or stocking parts for a service route, this category is the starting point for locating what you need.

Because this catalog spans thousands of individual parts across dozens of subcategories, the fastest way to find what you need is to search by exact OEM part number or browse into a specific subcategory, such as motors, blowers, ignitors, or control boards.

Major Subcategories

This category includes dedicated subcategories for:

  • Motors and blowers, including main blower motors, inducer motors, and blower assemblies.
  • Ignition components, including hot surface ignitors, pilot burners, and flame sensors.
  • Controls, including control boards, ignition modules, relays, and switches.
  • Electrical components, including capacitors, contactors, transformers, and circuit breakers.
  • Structural and mechanical parts, including housings, brackets, bearings, and pulleys.
  • Combustion and venting parts, including burners, gas valves, heat exchangers, and vent dampers.

How to Find the Right Part

Before ordering, check the equipment data plate and the existing part for the model number, serial number, and part number. Because this category covers such a wide range of equipment types and brands, matching by exact part number is the most reliable way to confirm compatibility.

For best fit, compare:

  • Original part number
  • Equipment model and serial number
  • Voltage, fuel type, and system type
  • Replacement or superseded part number, if applicable

Furnace & HVAC Parts From Leading Brands

Our catalog includes replacement parts from Carrier, Trane, York, Lennox, Rheem-Ruud, Amana-Goodman, Copeland, Honeywell, and hundreds of other HVAC, refrigeration, and combustion equipment manufacturers, covering both OEM and cross-reference replacement parts.

Need Help Finding a Part?

Not sure which subcategory to search, or which part you need? Use the model number, serial number, and existing part number from your equipment, or contact Furnace Part Source for help identifying the correct replacement.

Furnace & HVAC Replacement Parts FAQs

How do I find a specific part quickly in this category?

The fastest way is to search by the exact OEM part number printed on the existing component, or to browse into a more specific subcategory, such as motors, ignitors, or control boards.

Do you carry parts for both residential and commercial equipment?

Yes. This category includes parts for residential furnaces and air handlers as well as light-commercial and industrial heating, cooling, and combustion equipment.

What if I don't know the exact part number I need?

Use the equipment model number and serial number to help narrow the search, or contact Furnace Part Source for assistance identifying the correct replacement part.

Are replacement parts here new or used?

Furnace Part Source carries brand-new replacement parts, including OEM and compatible cross-reference components, unless a listing specifically states otherwise.