TECUMSEH K71-49 Compressor Start Relay AE4456Y-XN3C. 208-230/60/1

( Brand: Tecumseh ), ( Manufacturer Part Number: K71-49 ), ( Part Type: Start Compressor ), ( Compressor Type: Reciprocating ), ( Color: Black ), ( Power Phase: 1 Phase )

Review TECUMSEH Compressor Start Relay Ae4456y-xn3c. 208-230/60/1

The Tecumseh K71-49 Compressor Start Relay is a high-performance, precision-engineered electrical component specifically designed to serve as the critical control interface between the refrigerant circuit and the motorized compressor in Tecumseh-branded air conditioning and refrigeration systems, including the AE4456Y-XN3C model operating within a 208-230V, 60Hz electrical environment. This relay is engineered to provide reliable, high-capacity switching for the demanding start-up and operational demands of hermetic compressors, ensuring seamless engagement while protecting the system from electrical surges, voltage spikes, and thermal overloads. Constructed from durable, corrosion-resistant materials, the K71-49 features a robust coil assembly that delivers consistent and immediate response times, minimizing wear on the compressor and extending the overall lifespan of the refrigeration unit. Its compact yet sturdy design allows for easy integration into tight HVAC or refrigeration control panels, while the sealed contacts prevent moisture ingress, ensuring long-term reliability even in humid or corrosive environments. The relay s internal architecture incorporates a robust spring mechanism and precision-machined armature, which work in tandem to provide clean, arcing-free switching, reducing the risk of contact pitting or failure over extended use. Ideal for commercial and industrial applications, the K71-49 is built to withstand frequent cycling, making it an excellent choice for systems that experience variable load demands or frequent start-stop cycles. Whether installed in a medium-duty refrigeration unit, a process cooling system, or a specialized HVAC application, this relay ensures dependable performance, contributing to the efficiency and longevity of the entire refrigeration or air conditioning setup.

### Pros and Cons of buying a Tecumseh K71-49 Compressor Start Relay for AE4456Y-XN3C (208-230V/60Hz)

1. **Compatibility** The Tecumseh K71-49 is specifically designed for use with Tecumseh compressors, including those found in air conditioning and refrigeration units like the AE4456Y-XN3C. This ensures a direct fit without the need for extensive modifications.

2. **Reliability** Tecumseh is a well-known manufacturer in the HVAC (Heating, Ventilation, and Air Conditioning) industry, known for producing durable and dependable components. The K71-49 relay is built to handle the electrical demands of starting a compressor, reducing the risk of failure over time.

3. **Easy Installation** The relay is designed for straightforward installation, typically requiring only basic tools. It often comes with clear wiring diagrams or instructions, making it accessible for DIY enthusiasts or technicians with moderate experience.

4. **Cost-Effective Replacement** Replacing a faulty compressor start relay is usually far cheaper than repairing or replacing the entire compressor. This part is a common wear item, and purchasing a new one can extend the life of your system without a full overhaul.

5. **Prevents Further Damage** A failing relay can cause repeated start-up failures, leading to overheating or damage to the compressor motor. Replacing it promptly can prevent costly repairs to other components in the system.

6. **Widely Available** Tecumseh parts are widely distributed through HVAC supply stores, online retailers, and authorized distributors. This makes it easier to source the part quickly, especially if you need it for an emergency repair.

7. **Compatibility with Control Systems** The K71-49 relay is designed to work seamlessly with the control board and thermostat of your unit, ensuring proper operation once installed.

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1. **Potential Counterfeit Parts** Purchasing from untrusted sellers (especially online marketplaces) may result in counterfeit or low-quality replicas. These parts may fail prematurely or not function as intended, voiding warranties and causing further issues.

2. **Limited Lifespan** While the relay itself is durable, it is a wear item and may eventually fail again, especially if the compressor or other components in the system are aging. This could lead to repeated replacements over time.

3. **Skill Dependency** Although installation is generally straightforward, improper wiring or installation can damage the relay, the compressor, or other electrical components. Those without electrical experience may need professional assistance.

4. **Cost of Replacement vs. Compressor Replacement** While the relay is inexpensive, if the compressor itself is failing or nearing the end of its lifespan, replacing just the relay may not be a long-term solution. In such cases, a full compressor replacement might be more cost-effective in the long run.

5. **Compatibility with Modified Systems** If your unit has been modified or upgraded (e.g., with a different voltage or control system), the K71-49 may not be fully compatible. Always verify compatibility with your specific system s specifications.

6. **Warranty Voidance** If your unit is under warranty, replacing the relay with an aftermarket part may void the warranty, depending on the manufacturer s policies. Always check warranty terms before proceeding.

7. **Lead Time for Orders** Depending on the seller and availability, there may be delays in receiving the part, which could be problematic if you need it urgently for a repair.

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The Tecumseh K71-49 compressor start relay is a practical and reliable replacement for the AE4456Y-XN3C unit, offering a cost-effective solution to restart a failing compressor. Its compatibility, durability, and ease of installation make it a strong choice for both DIYers and professionals. However, potential buyers should be cautious of counterfeit parts, ensure proper installation, and consider the long-term health of the compressor. If the relay fails repeatedly, it may indicate underlying issues with the compressor or control system that warrant further investigation.

If you are experiencing compressor start-up failures and have confirmed that the issue lies with the start relay, purchasing the **authentic Tecumseh K71-49 from a trusted supplier** (such as an authorized HVAC parts distributor, Amazon, or a reputable online retailer) is the best course of action. Verify the part number and compatibility with your unit s specifications before ordering. If you are unsure about installation, consult a professional technician to avoid damaging the system. Additionally, if the compressor is old or has a history of frequent failures, consider evaluating whether a full compressor replacement or system upgrade may be more economical in the long run.

Details:

TECUMSEH Part# K71-49 Compressor Start Relay For AE4456Y-XN3C. 208-230/60/1 TECUMSEH Compressor Start Relay.

part #: k7149 prices

• $19.95-$53.95

specifications motohva:

• brand: Tecumseh
• mpn: K71-49
• part type: Start Compressor
• compressor type: Reciprocating
• color: Black
• power phase: 1 Phase

offer motohva:

• availability: In Stock
• sold: 0
• started: February 12, 2026
• quantity: 1
• options: Ship-to-home

payments motohva:

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

general motohva:

• condition: New
• HVAC Refrigeration > HVAC Refrigeration Components > Compressors

returns motohva:

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

shipping motohva:

• class: Standard, Expedited, Economy
• carrier: USPS, UPS
• type: Calculated
• cost: $7.95
• service: USPS Ground Advantage, USPS Priority Mail, USPS Priority Mail Express, UPS Ground Saver
• transit: 5-8 Days

seller motohva:

• rating: 99.4%
• # reviews: 150357
• city: Hartford, Wisconsin

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