EMERSON K55HXDGB-6854 Condenser Fan Motor Rpm 51-21854-10 1/3 1075

( Brand: Emerson ), ( Manufacturer Part Number: K55HXDGB-6854 ), ( Model: 51-21854-10 ), ( Type: Condenser Fan ), ( Power Frequency: 60 Hz ), ( Voltage: 230 V )

Review EMERSON Condenser Fan Motor 1/3 Hp Rpm

The **Emerson K55HXDG-B-6854 Condenser Fan Motor (Part #51-21854-10)** is a high-performance, single-phase, permanently split capacitor (PSC) motor engineered for demanding HVAC and refrigeration applications. Designed with precision and durability in mind, this motor delivers reliable, efficient operation in commercial and industrial air conditioning, heat pump, and refrigeration systems. Operating at a consistent **1/3 horsepower (0.25 kW)** and a rated speed of **1075 revolutions per minute (RPM)**, it provides the optimal balance of torque and speed to ensure smooth, consistent airflow through condenser coils, heat exchangers, and evaporator assemblies. Constructed with a robust **die-cast aluminum housing**, this motor is built to withstand the rigors of continuous operation while resisting corrosion and thermal stress, making it ideal for both indoor and outdoor installations where environmental exposure is a factor.

The motor features a **1075 RPM synchronous speed**, which aligns perfectly with standard HVAC compressor and fan system requirements, minimizing mechanical strain and maximizing energy efficiency. Its **condenser fan application** ensures optimal heat dissipation, preventing system overheating and extending the lifespan of associated components. The **permanently split capacitor (PSC) design** eliminates the need for external starting capacitors, simplifying installation and reducing maintenance complexity. Additionally, the motor s **direct-drive shaft** and **ball-bearing assembly** provide smooth, vibration-free operation, reducing wear on connected fan blades and ductwork while maintaining quiet performance critical for commercial and residential comfort systems.

Built to meet strict industry standards, this Emerson motor incorporates **high-quality insulation materials** rated for extended service life, ensuring reliability even under prolonged high-load conditions. The **NEMA 56C frame** provides a standardized mounting interface, allowing for easy integration with a wide range of condenser fan assemblies, while its **IP23-rated enclosure** offers basic protection against solid objects and light water ingress, making it suitable for both clean indoor environments and mildly exposed outdoor setups. Whether used in rooftop units, split-system air conditioners, or large-scale refrigeration systems, this motor delivers consistent performance, energy efficiency, and long-term durability making it a trusted choice for HVAC professionals and system designers seeking dependable, high-performance components.

### **Pros and Cons of buying a Emerson K55HXDGB-6854 Condenser Fan Motor (51-21854-10, 1/3 HP, 1075 RPM)**

1. **Compatibility** This motor is designed specifically for Emerson air conditioning and heat pump systems, particularly models with the **51-21854-10** part number. It is a direct replacement, ensuring proper fit and function without requiring modifications.

2. **Reliability** Emerson is a well-known brand in HVAC components, and this motor is built to withstand continuous operation in residential or light commercial systems. The **1/3 HP** rating suggests it is suitable for standard-sized condenser units.

3. **Performance Specifications** The **1075 RPM** speed is typical for condenser fan motors in this class, providing adequate airflow for efficient heat exchange. The **1/3 HP** power rating ensures it can handle typical cooling loads without overheating.

4. **Durability** As a **condenser fan motor**, it is designed for outdoor use, meaning it should be resistant to weather conditions (heat, moisture, and dust) when properly installed and protected.

5. **Ease of Replacement** Since it is an OEM (Original Equipment Manufacturer) part, installation should be straightforward for a qualified technician. No major adjustments to the system should be needed beyond removing the old motor and securing the new one.

6. **Energy Efficiency** While not explicitly labeled as "energy-efficient," Emerson motors are generally designed to operate efficiently within their rated capacity, reducing unnecessary energy consumption compared to poorly matched or older motors.

7. **Warranty Coverage** Emerson typically offers warranties on their motors, providing some assurance against defects in materials or workmanship for a set period (usually 1 5 years, depending on the model and retailer).

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1. **Cost** Replacement motors like this can be **more expensive** than generic or aftermarket alternatives. The price may range from **$100 to $200 **, depending on the retailer and whether it is new or refurbished.

2. **Limited Availability** Since this is an OEM part, it may not be as widely stocked as generic condenser fan motors. You may need to order it online or from a specialized HVAC supplier, which could delay repairs.

3. **Installation Complexity** While the motor itself is simple to replace, the process may require **disconnecting electrical wiring, removing the old motor, and ensuring proper alignment** of the new one. If not done correctly, it could lead to **vibration, poor performance, or electrical issues**.

4. **Potential for Counterfeit Parts** If purchasing from an untrusted seller (e.g., eBay, Amazon third-party sellers, or unknown online marketplaces), there is a risk of receiving a **counterfeit or low-quality replica**, which could fail prematurely.

5. **Compatibility Risks** Even if the part number matches, **minor variations in wiring, mounting, or motor type** (e.g., single-phase vs. three-phase, if applicable) could cause issues. Always verify compatibility with your system s manual or a technician.

6. **Labor Costs** If hiring a professional for installation, labor fees (typically **$100 $300**) will add to the total cost. DIY installation carries risks if not done correctly.

7. **Age of the Motor** If your system is **old (10 years)**, the motor may still be functional but approaching the end of its lifespan. Replacing it now may not be the most cost-effective solution unless it is failing.

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The **Emerson K55HXDGB-6854 condenser fan motor** is a **reliable, direct-replacement option** for Emerson HVAC systems, offering **proper fit, performance, and durability**. It is ideal if:

- Your system **requires an exact OEM match** (e.g., for warranty or optimal performance).

- You are **replacing a failed motor** in a working system.

- You have **confidence in the part s authenticity** (purchasing from a trusted supplier).

- You are looking for a **cheaper alternative** (generic motors may work but could lack longevity).

- Your system is **old and inefficient**, making a full unit replacement more cost-effective.

- You are **not comfortable with installation**, as improper fitting could lead to further issues.

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1. **Verify Compatibility** Double-check that this motor matches your **exact system model** (consult your unit s manual or a technician). Some Emerson systems use slightly different motor variants (e.g., different RPM or HP ratings).

2. **Purchase from a Trusted Source**

- **Authorized HVAC suppliers** (e.g., Home Depot, Lowe s, HVAC-specific retailers like **ACPartsDirect, Air Conditioning Superstore**).

- **Manufacturer s website** (Emerson Climate Technologies) or **authorized distributors** to avoid counterfeits.

- Avoid unknown sellers unless you can confirm the part s authenticity.

3. **Consider Generic Alternatives**

- If budget is a concern, **high-quality generic motors** (e.g., from **McQuay, Copeland, or Trane**) may offer similar performance at a lower cost. Look for motors with **similar HP, RPM, and voltage ratings**.

- Example: A **McQuay 1/3 HP 1075 RPM condenser fan motor** (part # **1075-130**) could be a viable substitute.

4. **Evaluate System Health**

- If your **entire HVAC system is old (15 years)**, replacing just the motor may not be enough. A **full unit replacement** could be more efficient and cost-effective long-term.

- If the motor is failing due to **wear and tear**, consider whether **preventative maintenance** (cleaning coils, checking refrigerant levels) could extend the life of your current system.

5. **DIY vs. Professional Installation**

- If you have **basic electrical and mechanical skills**, replacing the motor can be a **straightforward DIY job** (disconnect power, remove old motor, install new one, reconnect wiring).

- If unsure, **hire an HVAC technician** ( $100 $300 labor) to ensure proper installation and avoid damaging the system.

6. **Check for Warranty or Discounts**

- Some retailers offer **extended warranties** on motors, which may be worth considering if the system is critical.

- Look for **promotions or bundle deals** (e.g., motor fan blade kits) to save money.

You need an **exact OEM replacement** for your Emerson system.

You trust the **source of purchase** to avoid counterfeits.

Your system is **otherwise healthy**, and the motor is the only failing component.

You want to **save money** (generic motors may suffice).

Your system is **old and inefficient**, making a full replacement better.

You are **not confident in DIY installation** (hire a professional).

- **For most homeowners**, purchasing the **Emerson OEM motor from a reputable supplier** and installing it yourself (if comfortable) is the **safest and most reliable choice**.

- If cost is a major concern, **compare with a high-quality generic motor** of the same specifications before deciding.

- Always **test the system after installation** to ensure the motor runs smoothly and the unit operates efficiently.

Details:

30 day warranty begins on first of delivery. Some parts have been painted for cosmetic reasons only. Our pledge is to do whatever it takes make your experience with us 100% satisfactory. All parts have been bench tested and visually inspected to ensure they are in working order.

This part must be installed by a licensed HVAC technician.

part #: k55hxdgb6854 prices

• $65.00-$199.00

specifications fablowehva:

• brand: Emerson
• mpn: K55hxdgb-6854
• model: 51-21854-10
• type: Condenser Fan
• power frequency: 60 Hz
• voltage: 230 V

general fablowehva:

• HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Fans Blowers
• condition: Used

returns fablowehva:

• time: 30 Days
• method: Money back
• paid by: Buyer
• policy: Returns Accepted

payments fablowehva:

• wallet: Apple-pay
• other
• credit card: Visa

offer fablowehva:

• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: April 14, 2026

seller fablowehva:

• # reviews: 1056
• city: Wichita, Kansas
• rating: 99.6%

shipping fablowehva:

• class: Standard
• type: Calculated
• service: USPS Ground Advantage
• cost: $0.00
• carrier: USPS
• transit: 3-8 Days

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