BULBSANDBATTERIES HON220738A-U Honeywell Thermal HON220738A/U

( Brand: Bulbsandbatteries ), ( Manufacturer Part Number: HON220738A/U ), ( Type: Replacement Item )

Review BULBSANDBATTERIES Hon220738a/u Replacement Honeywell Thermal Solutions

The **Honeywell HON220738A/U** is a high-performance, battery-powered **7-inch wireless thermostat** designed to seamlessly integrate with Honeywell s advanced **Lyric Series** smart home ecosystem, offering unmatched convenience, energy efficiency, and customizable climate control. Engineered with a sleek, minimalist **touchscreen interface**, this thermostat features a **backlit display** that ensures readability in any lighting condition, while its **rotary dial** provides intuitive manual adjustments for quick temperature fine-tuning. Built to withstand temperature fluctuations, the HON220738A/U operates reliably in environments ranging from **65 F to 100 F (18 C to 38 C)**, making it ideal for both residential and light commercial applications. Powered by a **replaceable AA battery** (included), this model eliminates the need for hardwiring, allowing for easy installation in homes without existing C-wire support, though it does require a **24VAC transformer** (sold separately) for full functionality. The thermostat s **wireless connectivity** enables seamless pairing with Honeywell s **Total Connect Comfort (TCC) system**, allowing users to monitor and control their home s climate remotely via smartphone or tablet through the intuitive **Honeywell Total Connect app**. With **geofencing capabilities**, the thermostat automatically adjusts settings based on your location, optimizing energy usage when you re away and ensuring comfort upon your return. Additionally, the HON220738A/U supports **multi-stage heating and cooling systems**, including **heat pumps, furnaces, and air conditioners**, delivering precise zonal control for enhanced efficiency. Its **energy-saving modes**, such as **Auto Changeover** and **Eco Mode**, help reduce utility costs by optimizing heating and cooling cycles, while **programmable schedules** allow for personalized temperature settings tailored to your daily routine. The thermostat also features **voice control compatibility** with popular smart home assistants like **Amazon Alexa and Google Assistant**, enabling hands-free operation for ultimate convenience. With its **durable construction**, **user-friendly design**, and **smart home integration**, the Honeywell HON220738A/U is a versatile and efficient solution for modern households seeking both comfort and energy savings.

**Pros and Cons of buying a Bulbsandbatteries HON220738A/U for Honeywell Thermal Sensors**

The **HON220738A/U** is a replacement battery and bulb unit designed for Honeywell thermal sensors, commonly used in security systems like the Honeywell Lyric or other compatible models. Below is a detailed breakdown of its advantages and disadvantages.

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### **Pros**

1. **Direct Compatibility**

The HON220738A/U is specifically engineered for Honeywell thermal sensors, ensuring a seamless fit without modification. This eliminates guesswork and reduces the risk of purchasing an incompatible part.

2. **Reliable Performance**

Honeywell is a well-established brand known for quality security components. The thermal sensor, when paired with the correct bulb and battery, should function as intended, providing accurate temperature readings for motion detection or other thermal-based triggers.

3. **Easy Installation**

The unit is designed for straightforward replacement. Most users can swap out the old bulb and battery without requiring specialized tools or technical expertise. The packaging typically includes clear instructions.

4. **Long-Term Durability**

Honeywell components are generally built to last, especially if stored properly. The bulb (likely an infrared emitter) and battery (usually a coin-cell type) are standard replacements that should not degrade performance significantly over time, assuming the original components were of good quality.

5. **Warranty and Support**

Purchasing from authorized sellers (like Bulbsandbatteries) may include warranties or return policies. Honeywell s reputation for customer support means troubleshooting or replacements can be easier if issues arise.

6. **Cost-Effective Replacement**

Compared to purchasing a full new sensor, replacing just the bulb and battery is a budget-friendly solution. The cost is minimal, and the part is readily available, reducing downtime for security systems.

7. **Prevents False Alarms**

A failing bulb or dead battery can cause thermal sensors to malfunction, leading to false alarms or missed detections. Replacing these components ensures consistent operation, which is critical for security reliability.

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### **Cons**

1. **Limited Lifespan of Components**

- **Battery**: Coin-cell batteries (commonly used) typically last 1 5 years, depending on usage. If the battery is old, it may drain quickly, requiring frequent replacements.

- **Bulb**: Infrared bulbs can degrade over time, especially if exposed to extreme temperatures or physical stress. A burnt-out bulb may need replacement sooner than expected.

2. **Potential for Counterfeit Parts**

Purchasing from unauthorized or third-party sellers (even on platforms like Amazon or eBay) risks receiving counterfeit or low-quality parts. These may not function correctly, leading to system failures or voiding warranties. Bulbsandbatteries is generally reputable, but verifying the seller s authenticity is always wise.

3. **Dependence on Original Equipment**

While the HON220738A/U is designed for Honeywell sensors, some aftermarket or generic thermal sensors may not accept this exact part. Double-checking compatibility with your specific model (e.g., Honeywell Lyric, LYNX Touch, or other systems) is essential to avoid mismatches.

4. **Technical Knowledge Required for Some Models**

In rare cases, certain Honeywell systems (especially older or more complex ones) may require additional steps, such as recalibration or reprogramming after replacing the bulb/battery. While uncommon, this could add minor inconvenience.

5. **Environmental Factors**

Thermal sensors are sensitive to their surroundings. If the sensor is exposed to dust, moisture, or extreme temperatures, the bulb or battery may fail prematurely. Regular maintenance (cleaning the sensor lens) can mitigate this.

6. **No Upgrade Path**

The HON220738A/U is a replacement part, not an upgrade. It does not offer improved features like longer battery life, better sensitivity, or smart connectivity. If you need advanced functionality, you may need to consider a full sensor replacement.

7. **Availability and Lead Times**

While Bulbsandbatteries stocks this part, supply chain issues or regional availability could occasionally lead to delays. Checking stock levels before purchasing is advisable.

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### **Conclusion**

The **HON220738A/U** from Bulbsandbatteries is a practical and reliable choice for replacing the bulb and battery in Honeywell thermal sensors. Its primary strengths lie in **direct compatibility, ease of installation, and cost-effectiveness**, making it an ideal solution for routine maintenance or minor repairs. The potential downsides such as **component lifespan, risk of counterfeit parts, and environmental sensitivity** are manageable with proper care and sourcing from trusted vendors.

For most users, the benefits outweigh the drawbacks, especially if the sensor is part of a critical security system where reliability is paramount. However, if you anticipate frequent replacements or need long-term solutions, consider investing in higher-quality sensors or exploring smart alternatives that offer extended battery life or self-diagnostic features.

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### **Recommendation**

- **Buy from Bulbsandbatteries** if you ve confirmed the part number matches your Honeywell sensor model. Their reputation for authenticity and customer service makes them a safer choice than generic sellers.

- **Check compatibility** with your exact sensor model (e.g., Honeywell Lyric, LYNX Touch, or other variants) to avoid mismatches. Honeywell s product documentation or customer support can verify this.

- **Store spare parts** in a cool, dry place to prolong the bulb s and battery s lifespan.

- **Monitor performance** after replacement. If false alarms or detection issues persist, the sensor itself may need servicing.

- **Consider a full sensor upgrade** if you experience recurring failures, as newer models may offer improved durability and smart features.

Overall, the **HON220738A/U is a sound investment for maintaining your Honeywell thermal sensor s functionality**, provided you source it responsibly and address any environmental or usage factors that could affect its performance.

Details:

Honeywell Thermal Solutions HON220738A/U. Specifications. Massive Inventory. Expert Knowledge, Our team has decades of combined experience to help you find the right product for your application.

Manufacturer warranty included. Return Shipping, Buyer pays return shipping.

specifications pumhva:

• brand: Bulbsandbatteries
• mpn: Hon220738a/u
• type: Replacement Item

seller pumhva:

• # reviews: 37118
• rating: 98.7%
• city: Hammond, IN

payments pumhva:

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

offer pumhva:

• started: March 6, 2026
• availability: In Stock
• options: Ship-to-home
• sold: 0

returns pumhva:

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

general pumhva:

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

shipping pumhva:

• class: Economy, Expedited, One-day
• service: Economy, USPS Priority Mail, USPS Priority Mail Express, UPS Next Day Air
• carrier: USPS, UPS
• transit: 3-5 Days
• type: Fixed
• cost: $0.00

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