Furnace & HVAC

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Carrier 48LC400142 VFD Key-Pad

Carrier

MSRP: $1,276.65

Now: $986.51

Carrier 48LC400142 VFD Key-Pad FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

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Carrier P502-8757S Filter Drier

Carrier

MSRP: $198.99

Now: $153.76

Carrier P502-8757S Filter Drier FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

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Carrier HK70EZ082 Furnace Module Plug

Carrier

MSRP: $31.89

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Carrier HK70EZ082 Furnace Module Plug FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

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Trane COL31420 Indoor Coil

Trane

MSRP: $8,937.46

Now: $6,770.81

Trane COL31420 Indoor Coil Must Ship by Freight Truck FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

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United Electric SD6225-76 SS Well Assembly 3/4"x4 1/2"

United Electric

MSRP: $270.17

Now: $208.77

3/4"x4 1/2" FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $270.17

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TE Connectivity T9AP1D52-22-02 Power Relay SPST-NO

TE Connectivity

MSRP: $20.28

Now: $15.67

TE Connectivity T9AP1D52-22-02 Power Relay SPST-NO 30Amp 22vdc FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless...

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Trane COM10845 Compressor 2.5TON 460V/60/3 R-410A

Trane

MSRP: $2,160.31

Now: $1,636.60

Trane COM10845 Compressor 2.5TON 460V/60/3 R-410A Must Ship by Freight Truck Warranty policy for this compressor is one year from purchase and is only issued if an exact replacement compressor is ordered from furnacepartsource...

MSRP: $2,160.31

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Trane COM13128 Scroll Compressor 2.33TON 460V R22

Trane

MSRP: $2,383.52

Now: $1,841.81

Trane COM13128 Scroll Compressor 2.33TON 460V R22 Must Ship by Freight Truck FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order...

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Trane MOD02757 Module Single Comp SCM Service

Trane

MSRP: $341.02

Now: $263.52

Trane MOD02757 Module Single Comp SCM Service FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $341.02

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Rheem-Ruud 42-105583-08 Pressure Switch

Rheem-Ruud

MSRP: $22.13

Now: $17.10

Rheem-Ruud 42-105583-08 Pressure Switch FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

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Littelfuse FLSR050ID Fuse 600V Time Delay 50A IND

Littelfuse

MSRP: $49.43

Now: $38.20

Littelfuse FLSR050ID Fuse 600V Time Delay Electrical Fuse and Fuse Blocks Fuse 600V Time Delay CLASS RK5 50 Amp Indicating FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when...

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Honeywell ML8115A1005 Smoke Fire Actuator 24V CCW-S/R 30#

Honeywell

MSRP: $123.73

Now: $93.74

Honeywell ML8115A1005 Smoke Fire Actuator 24V CCW-S/R 30# FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $123.73

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Danfoss 120Z0039 Crankcase Heater 400V 65 Watts

Danfoss

MSRP: $76.71

Now: $59.27

Danfoss 120Z0039 Crankcase Heater 400V 65 Watts FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $76.71

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Danfoss 060-205291 Low Pressure Switch SPDT 6"-108#

Danfoss

MSRP: $180.56

Now: $139.52

Danfoss 060-205291 Low Pressure Switch SPDT 6"-108# FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $180.56

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Danfoss 023Z7021 Receiver Filter Drier

Danfoss

MSRP: $76.54

Now: $59.15

Danfoss 023Z7021 Receiver Filter Drier FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $76.54

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Copeland 527-0175-02 Spacer Mounting Assembly

Copeland

MSRP: $92.52

Now: $71.49

Copeland 527-0175-02 Spacer Mounting Assembly FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $92.52

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Copeland 940-0001-60 Start Relay

Copeland

MSRP: $141.49

Now: $109.33

Copeland 940-0001-60 Start Relay FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $141.49

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Copeland 998-0034-18 Rotalock to Swt 1 1/4 TO 1/2"

Copeland

MSRP: $162.84

Now: $125.83

Copeland 998-0034-18 Rotalock to Swt 1 1/4 TO 1/2" FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

MSRP: $162.84

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Copeland 005-0947-01 Terminal Cover

Copeland

MSRP: $21.47

Now: $16.59

Copeland 005-0947-01 Terminal Cover FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No Minimum Order Requirements unless noted above

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Copeland 998-0034-08 Rotalock to Stub Tube Adapter Kit 7/8"

Copeland

MSRP: $84.64

Now: $65.41

Copeland 998-0034-08 Rotalock to Stub Tube Adapter Kit 1-1/4"-12 Thread Size 7/8"&#148 Stub Tube I.D. FurnacePartSource.com Commitment Always Brand-New Genuine Parts In stock parts ship Same Business Day when ordered by 5PM ET No...

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Furnace Replacement Parts & HVAC System Components

Furnace replacement parts are critical to maintaining the performance and safety of any heating system. In both residential and commercial HVAC applications, a furnace relies on numerous components working together to heat air and circulate it throughout a building. These HVAC system components – from burners and heat exchangers to controls and sensors – must function correctly to ensure efficient operation and reliability. When any part fails or wears out, using quality replacement components (preferably OEM furnace parts) helps restore the system’s performance and prolong its lifespan.

Key HVAC Components in Furnaces

Blower Motors: The blower motor is an electric motor that drives a fan to circulate air through the furnace and ductwork. It pushes air across the heat exchanger to distribute warm air during heating, and also circulates air over the AC evaporator coil during cooling\. A properly functioning blower motor maintains airflow and consistent temperature throughout the space.
Ignition Modules & Ignitors: Modern furnaces use electronic ignition systems. An ignition module manages the sequence of operations for lighting the burner – it sends a spark or powers a hot-surface ignitor, opens the gas valve, and monitors the flame to ensure safe ignition. If the flame isn’t detected within a few seconds, the module will shut down the gas for safety. Hot surface ignitors (glow plugs) and spark ignitors work with the module to ignite the fuel reliably.
Limit Switches (Safety Controls): A limit switch is a temperature-activated safety device that prevents overheating. If the furnace’s internal temperature rises too high (for example, due to a blower failure or restricted airflow), the limit switch will open the circuit to shut off the burner. This protects the heat exchanger and other components from damage and is crucial for furnace safety. Many furnaces use a fan limit switch that also controls the blower fan on/off timing for heating.
Control Boards: Often called furnace control boards or integrated furnace controllers, these are the “brains” of the furnace. Control boards regulate key functions like blower fan timing, ignition sequence, and gas valve operation. In some systems, a control board incorporates the ignition control as well, managing everything from the inducer fan and ignition spark to blower delays. A faulty control board can lead to various operational issues, so replacing it with the correct OEM board is important for proper furnace performance.
Combustion Components (Burners & Sensors): The burners are where fuel combustion occurs to create heat, and they feed the heat exchanger. Replacing burners may be necessary if they become corroded or damaged. Additionally, flame sensors (or thermocouples in older units) are small but essential parts that detect the burner flame; if the flame sensor fails, the furnace may shut off the gas for safety. Maintaining these components ensures the furnace ignites correctly and operates safely.

OEM Furnace Parts and Compatibility

When replacing furnace components, opting for OEM parts (Original Equipment Manufacturer parts) is often recommended. OEM furnace parts are made by the furnace’s manufacturer or an approved vendor to match the original specifications exactly. This guarantees proper fit and function within the system. Using OEM replacements provides “guaranteed compatibility” and reliability with the existing equipment. In contrast, generic or aftermarket parts might save cost upfront but can introduce compatibility issues – they may not align perfectly with the furnace’s design, potentially reducing efficiency or causing malfunctions. Moreover, nonOEM parts could even void manufacturer warranties in some cases. In summary, genuine OEM parts help ensure that the repaired furnace operates as intended, sustaining performance and safety standards set by the manufacturer.

Furnace Parts for Commercial HVAC Systems

Commercial HVAC parts serve the same fundamental purposes as those in residential systems – moving air, igniting fuel, regulating temperature, etc. – but are often built for heavier duty and larger capacity. Commercial furnaces and rooftop units may use larger blowers, higher-output burners, and more robust heat exchangers to handle the heating demands of big spaces. They might also be configured as packaged units (especially in large buildings) where the furnace, blower, and AC components are integrated in one system. The parts themselves, however, still include familiar items like blower motors, ignition modules, sensors, limit switches, and control boards, just scaled up or reinforced for continuous operation. Using high-quality parts in commercial HVAC systems is critical: it ensures the system runs smoothly under intensive use, reducing energy waste and improving reliability. In fact, investing in quality commercial HVAC replacement parts can significantly enhance system performance and efficiency for businesses. Whether for a home furnace or an industrial heating unit, the goal in replacing parts is the same – to maintain safe operation and optimal heating performance.

Frequently Asked Questions (FAQ)

What are the most common furnace replacement parts?

Common furnace replacement parts include blower motors, ignitors (hot surface ignitors or spark ignitors), ignition control modules, flame sensors, gas valves, and limit switches. These components frequently wear out or fail over time. For example, blower motors have moving parts that can burn out, and ignitors are fragile and crack with age. Control boards and thermostats may also require replacement if they malfunction. Keeping these parts in good working order is essential, as each plays a role in the furnace’s ability to heat effectively and run safely.

How does a furnace limit switch improve safety?

The limit switch is a safety device that monitors the furnace’s internal temperature. If the furnace gets too hot – for instance, if the blower motor isn’t moving enough

air to cool the heat exchanger – the limit switch opens the electrical circuit to shut off the burner. This prevents the furnace from overheating and potentially causing damage or creating a fire hazard. Once the furnace cools to a safe temperature, the switch resets (on many models) allowing normal operation to resume. In short, the limit switch protects both the equipment and your home by acting as an automatic safety cutoff.

What does a furnace ignition module do?

An ignition module (sometimes called an ignition control) is an electronic component that controls the burner ignition process in a furnace. Its primary job is to light the burners safely. When the thermostat calls for heat, the ignition module initiates a sequence: it powers the ignitor or spark electrode and opens the gas valve to ignite the burner flame. The module also monitors the flame via a sensor. If a flame isn’t detected within a few seconds, the module will shut off the gas to prevent a dangerous gas buildupIn many modern furnaces, the ignition module is part of the main control board. A faulty ignition module can prevent the furnace from lighting at all, so replacing it promptly restores proper heating function.

Why choose OEM furnace parts for replacements?

OEM furnace parts are recommended because they ensure compatibility and original performance. OEM parts are made to the exact specifications of the furnace’s manufacturer, guaranteeing a precise fit and correct operation with the other components. This precise fit and high reliability mean the part will support the furnace’s efficiency and longevity as intended. By contrast, using aftermarket or “one-size-fits-all” parts can be a gamble – the part might physically fit, but it could have slight differences that lead to reduced efficiency or even system malfunctions. Additionally, OEM parts often carry better warranties and won’t risk voiding the furnace’s warranty. While they may cost a bit more initially, OEM parts often provide better long-term value by ensuring the furnace runs smoothly and reliably after repairs.

Are commercial HVAC parts different from residential furnace parts?

The fundamental parts of a furnace or HVAC system are similar in function whether in a home or a commercial building – both use blowers, burners/heat exchangers, filters, control systems, etc. The differences lie in scale, configuration, and durability. Commercial HVAC parts are typically larger, heavier-duty, and designed to handle greater heating/cooling loads continuously. For example, a commercial system might use multiple large blower motors or a bigger heat exchanger to serve a huge space, whereas a residential furnace has a single smaller blower for a house. Commercial units often use higher-voltage blowers or three-phase motors and may come as packaged units (combining AC and furnace in one rooftop box) for space and efficiency. Residential systems are usually split (separate furnace and AC) and lower capacity. Despite these differences, maintaining reliability and efficiency is crucial for both. Quality replacement parts are important in commercial systems because any downtime can affect many people and lead to high costs; similarly, in a home furnace, reliable parts keep the system running safely and efficiently. In summary, while the parts serve the same purposes, commercial HVAC parts are built for higher performance and tougher duty, and they must be matched to the specific requirements of the larger systems.