HONEYWELL HK06NB017 Furnace Pressure Switch BA20203 0645D3/A
( Brand: Honeywell ), ( Manufacturer Part Number: HK06NB017 ), ( Compatible Brand: For Carrier ), ( Voltage: 24 V ), ( Compatible Product: Central Furnace ), ( Power Source: Corded Electric ), ( Type: Furnace Pressure Switch ), ( Material: Steel )
Review HONEYWELL Genuine Furnace Pressure Switch Oem Part 0645d3/a
The **Honeywell HK06NB017 Furnace Pressure Switch (BA20203 0645D3/A)** is a precision-engineered component designed to ensure the safe and efficient operation of residential and light-commercial gas furnaces by monitoring critical pressure differentials within the combustion system. This high-performance switch is a vital part of modern HVAC systems, safeguarding against dangerous conditions such as backdrafting, improper venting, or excessive pressure buildup that could compromise furnace performance or pose a fire hazard. Built with Honeywell s signature reliability, the HK06NB017 features a robust, hermetically sealed diaphragm mechanism that detects even subtle fluctuations in the pressure differential between the furnace s combustion chamber and the surrounding flue system. This sensitivity allows the switch to respond instantly to deviations from optimal operating conditions, triggering a shutdown or alert to prevent potential damage or safety risks.
Constructed from durable materials, including corrosion-resistant metal housings and precision-molded elastomers, the HK06NB017 is engineered to withstand the harsh environments of forced-air heating systems, including exposure to temperature variations, moisture, and minor vibrations. The switch operates on a simple yet effective principle: when the pressure differential falls below or exceeds the factory-set threshold (typically around 0.03 inches of water column), the internal diaphragm actuates a micro-switch, interrupting the circuit to the furnace s ignition or burner system. This immediate response helps prevent backdrafting where unburned gases or carbon monoxide could leak into living spaces or ensures proper draft for complete combustion, reducing energy waste and emissions. The BA20203 0645D3/A model, in particular, is part of Honeywell s broader line of high-quality pressure switches, known for their consistency and compatibility with a wide range of furnace brands and models, including those from Carrier, York, and Goodman.
For technicians and homeowners alike, the HK06NB017 offers a balance of simplicity and sophistication, with a straightforward wiring configuration that typically involves two terminals one for power and one for control making installation and troubleshooting relatively straightforward. Its compact yet sturdy design allows for easy integration into existing furnace setups, often mounted near the flue or combustion chamber where pressure readings are most critical. When servicing a furnace, a faulty or failing pressure switch can manifest as erratic operation, repeated ignition failures, or even a complete lack of heat, making the HK06NB017 a cost-effective solution for restoring system reliability. Honeywell s commitment to quality ensures that this switch delivers long-term performance, reducing the likelihood of premature failure and minimizing downtime. Whether in a newly installed furnace or as a replacement for an aging component, the HK06NB017 stands as a dependable guardian of both efficiency and safety in residential heating systems.
### **Pros and Cons of buying a Honeywell HK06NB017 Furnace Pressure Switch (BA20203 0645D3/A)**
#### **Pros:**1. **Compatibility** This pressure switch is designed specifically for Honeywell furnaces, ensuring a proper fit and reliable operation with models that require this part. It is commonly used in gas furnaces with Honeywell controls, reducing the risk of mismatches.
2. **Reliability** Honeywell is a well-established brand known for producing durable HVAC components. A genuine part like this pressure switch is less likely to fail prematurely compared to aftermarket or generic replacements.
3. **Easy Installation** The design is straightforward, and many homeowners or HVAC technicians can replace it without extensive modifications. It typically requires only basic tools and a few minutes of work.
4. **Prevents System Damage** A faulty pressure switch can cause unsafe operating conditions, such as excessive pressure buildup or improper gas flow, which may damage the furnace or create safety hazards. Replacing it ensures the system operates within safe parameters.
5. **Warranty Coverage** If purchased new from an authorized dealer or Honeywell s official channels, this part may come with a warranty, providing peace of mind against defects.
6. **Common Availability** As a widely used part, it is easy to find in stock at HVAC supply stores, online retailers (e.g., Home Depot, Lowe s, Amazon), or directly from Honeywell distributors.
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#### **Cons:**1. **Cost** Compared to aftermarket or generic alternatives, this OEM (Original Equipment Manufacturer) part can be more expensive. Prices typically range between **$50 and $100**, depending on the source.
2. **Potential Counterfeit Parts** Purchasing from untrusted sellers (e.g., unknown online marketplaces) risks receiving a counterfeit or low-quality replica, which may fail quickly or not function as intended.
3. **Limited Lifespan** Like all mechanical components, pressure switches wear out over time. If the original part was already failing, replacing it with a new one may only provide temporary relief before another failure occurs (though this is more indicative of broader system issues).
4. **DIY Risk** While installation is relatively simple, improper handling (e.g., damaging wiring, incorrect pressure adjustments) can lead to furnace malfunctions or safety risks. Those uncomfortable with HVAC work may prefer a professional technician.
5. **Compatibility Verification Needed** Before purchasing, it s crucial to confirm that this exact model (BA20203 0645D3/A) matches your furnace s specifications. Misidentification could result in an incompatible part.
6. **No Significant Performance Upgrade** This is a replacement part, not an upgrade. It will not improve efficiency or add features only restore functionality if the original failed.
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### **Conclusion:**The **Honeywell HK06NB017 pressure switch (BA20203 0645D3/A)** is a **reliable, compatible, and necessary replacement** for Honeywell-controlled furnaces experiencing pressure switch failures. Its pros such as brand trustworthiness, ease of installation, and safety benefits outweigh the cons for most users, provided the part is purchased from a reputable source.
However, the **higher cost** and **potential for counterfeit parts** are valid concerns. If budget is a constraint, a **high-quality aftermarket alternative** (e.g., from brands like **Honeywell-compatible parts from Home Depot or Amazon**) may offer similar performance at a lower price. Always verify the part number and source to avoid issues.
**Final Recommendation:**- **Buy from an authorized dealer, Honeywell-approved distributor, or a trusted retailer** (e.g., Home Depot, Lowe s, or an HVAC supply company) to ensure authenticity.
- **Confirm compatibility** with your furnace s model and control board before purchasing.
- **Consider professional installation** if unsure about handling electrical or gas components.
- **If cost is a concern**, explore certified aftermarket alternatives with positive reviews, but prioritize quality to avoid repeated failures.
For most users, this is a **worthwhile investment** to restore furnace safety and functionality.
Details:
Genuine Honeywell Furnace Pressure Switch OEM Part BA20203 0645D3/A HK06NB017. Made of durable steel, this corded electric switch operates at 24V and is compatible with Carrier brand furnaces. With the trusted Honeywell brand name, this pressure switch ensures reliable control and safety for your HVAC system. The Genuine Honeywell Furnace Pressure Switch OEM Part BA20203 0645D3/A HK06NB017 is a high-quality replacement part for central furnaces.
part #: hk06nb017 prices
- $23.00-$40.00
specifications hvaapa:
- brand: Honeywell
- mpn: Hk06nb017
- compatible brand: For Carrier
- voltage: 24 V
- compatible product: Central Furnace
- power source: Corded Electric
- type: Furnace Pressure Switch
- material: Steel
seller hvaapa:
- city: Eveleth, Minnesota
- rating: 99.2%
- # reviews: 803
payments hvaapa:
- other
- wallet: Google-pay
- credit card: Discover
offer hvaapa:
- quantity: 1
- best offers: True
- sold: 0
- availability: In Stock
- options: Ship-to-home
- started: April 20, 2026
shipping hvaapa:
- type: Calculated
- service: USPS Ground Advantage
- class: Standard
- transit: 4-10 Days
- cost: $0.00
- carrier: USPS
returns hvaapa:
- policy: No Returns
general hvaapa:
- HVAC Refrigeration > HVAC Refrigeration: Parts Accessories > HVAC Refrigeration: Controls Circuit Boards
- condition: Used
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