DESCRIPTION
DUN AN VAL10703 / 4 WAY REVERSING VALVE ASSEMBLY R-410A 206629 – HVAC & Refrigeration Valves
The DUN AN VAL10703 is a four-way reversing valve assembly engineered for R-410A refrigerant systems, commonly used in HVAC applications to efficiently switch between heating and cooling modes. This robust component ensures reliable performance for heat pump systems, optimizing the directional flow of refrigerant and supporting high-efficiency climate control.
- Compatible with R-410A refrigerant
- Four-port design for precise flow management
- Durable construction for extended system life
- OEM: DUN AN, Model: VAL10703, Part: 206629
- Ideal for split system and package unit replacements
Compared to standard reversing valves in the HVAC industry, the DUN AN VAL10703 stands out for its compatibility with R-410A, which is now the industry standard for new high-efficiency systems. Unlike older models designed for R-22 refrigerant, this assembly meets modern efficiency and regulatory requirements, making it a reliable replacement for existing equipment or an essential part for system upgrades.
Key Technical Advantages:
Technology and Performance
This reversing valve assembly delivers advanced flow-switching technology, allowing quick and seamless transitions between heating and cooling cycles. Its four-port configuration enhances efficiency, reducing energy loss and helping maintain optimal system performance. Additionally, the DUN AN VAL10703 is engineered for durability, resisting wear and corrosion even under frequent cycling, ensuring lasting operation in demanding HVAC environments.
Whether you’re a contractor seeking a replacement part or upgrading an HVAC unit to maintain compliance, this R-410A reversing valve ensures your systems operate at their peak. By choosing this assembly, you benefit from industry-proven technology that meets today’s performance expectations, while enjoying compatibility with widely used modern refrigerants. This HVAC & refrigeration valve is a reliable choice for maintaining long-term system efficiency and comfort.
SHIPPING
Shipping Policy
At Willards HVAC Supply, we take pride in fast, reliable shipping for both standard and freight orders. Please review our shipping terms carefully to understand how your order will be processed and delivered.
1. Order Processing Time
- All orders—both freight and non-freight—are processed and shipped within 24 hours of payment confirmation (excluding weekends and holidays).
- Orders placed after business hours will be processed the following business day.
2. Shipping Methods
We ship using a combination of standard parcel carriers (UPS, FedEx, USPS) and LTL freight carriers depending on the size, weight, and type of product ordered.
- Non-Freight Items: These items ship via standard ground or expedited carrier service. Overnight shipping is available for these items.
- Freight Items: Large or heavy products that require palletization will ship via an LTL freight carrier. Overnight shipping is not available for freight shipments.
3. Delivery Times
- Standard Ground: Most deliveries arrive within 3–5 business days after shipment.
- Overnight Shipping: When selected at checkout (for non-freight items only), we guarantee delivery within 48 hours from when the order is placed.
If we fail to deliver your overnight shipment within 48 hours of shipment, you will receive a full refund of the overnight shipping charge.
4. Overnight Shipping Rate
- Overnight shipping is available at a flat rate of $100 per order (for eligible non-freight items).
- This service includes expedited processing and guaranteed delivery within 48 hours, or your overnight charge will be refunded.
5. Freight Shipping Details
- Freight shipments are delivered curbside to commercial or residential addresses.
- The customer is responsible for unloading the item(s) from the truck unless a liftgate service is purchased or included.
- Inspect all freight deliveries before signing the carrier’s delivery receipt. Note any visible damage immediately and contact us within 24 hours.
6. Tracking Information
Once your order ships, a tracking number will be provided via email. Freight shipments may include a Bill of Lading (BOL) number for status updates through the carrier’s website.
7. Shipping Restrictions
- We currently ship within the contiguous United States only.
- We do not ship to P.O. boxes, APO/FPO addresses, or international destinations.
8. Delays Beyond Our Control
While we strive to meet all delivery timelines, Willards HVAC Supply is not responsible for carrier delays caused by weather, natural events, or other circumstances beyond our control. However, our overnight delivery guarantee still applies to qualifying orders when carrier fault is not involved.
9. Contact Us
If you have any questions about shipping or tracking your order, please contact us at support@willardshvacsupply.com.
Warranty
1-Year Limited Warranty Policy
At Willard’s HVAC Supply LLC, we provide a limited one-year warranty from the date the product is received. This warranty covers defects in materials or workmanship under normal use and installation.
What’s Covered:
- Defective parts due to material or manufacturing faults.
- Product failures under normal, proper installation and use.
Our Promise:
If a defect occurs within one year, we’ll either repair, replace, or refund the product at our discretion.
Not Covered:
- Improper installation, wiring, or misdiagnosis.
- Damage from misuse, neglect, or incompatible systems.
- Normal wear, cosmetic damage, or acts of nature (fire, flood, power surge).
- Labor or shipping costs related to removal or reinstallation.
- Items sold “as-is” or marked “final sale.”
Warranty Claim Steps:
- Email support@willardshvacsupply.com with your order number, part number, description, and photos or video of the issue.
- If approved, we’ll provide a prepaid shipping label for return.
- Drop the return off within two (2) business days of receiving the label.
After inspection, we’ll confirm if the part qualifies for repair, replacement, or refund.
Customer Responsibilities:
- Ensure diagnosis and installation were performed by a qualified technician.
- Return the item in original condition.
- If no defect is found, shipping and handling charges will apply.
Limitations:
Our liability is limited to repair, replacement, or refund. We are not responsible for labor, downtime, or indirect damages.
Non-Transferable:
This warranty applies only to the original purchaser and installation.
Governing Law:
This warranty is governed by South Carolina law.
Contact Info
Willard’s HVAC Supply, LLC
311 Belair Road
North Augusta, SC 29841
Phone: (803) 510-7290
Email: support@willardshvacsupply.com
Use our live chat to text with us.
Hours: Mon–Fri 8AM–5PM (EST)
Doing Business With US
- 1 YEAR WARRANTYFlexibe warranty on all items.
- DISCOUNTS AVAILABLEContact us for savings.
- IMMEDIATE PHONE SUPPORT(803) 510-7290
- FREE SHIPPINGFree shipping on all orders.
- OVERNIGHT AVAILABILITYGet your shipment tomorrow.
- CHAT SUPPORTYour preference for communication.
- PRICE MATCHWe will price-match most competitors.
- SMALL BUSINESSSupport a small business in the USA.
- INFORMATION PRIVACYTop industry standards for security.



