DESCRIPTION
ICP NASA401LA / LOW-AMBIENT PRESSURE SWITCH KIT 174504 – HVAC & Refrigeration Component
The ICP NASA401LA Low-Ambient Pressure Switch Kit 174504 is an essential replacement part engineered for reliable performance in HVAC and refrigeration systems. Designed to optimize your system’s functionality during colder conditions, this pressure switch kit guarantees precise monitoring and control of low-side refrigerant pressure, ensuring equipment integrity under low ambient temperature operation.
- Model: NASA401LA
- Application: Low-ambient pressure control for HVAC systems
- Compatible Systems: Designed for ICP and select other split system AC and heat pump units
- Pressure Setting: Factory-calibrated for optimal performance (refer to manufacturer specifications)
- Installation: Includes necessary wiring and hardware for straightforward setup
Compared to standard pressure switches in today’s HVAC market, the ICP NASA401LA stands out with its specialized low-ambient operation, making it a superior choice for northern climates requiring enhanced system protection during cooler months. Where earlier models might have lacked precision or had limited compatibility, this updated kit is engineered for reliability, longevity, and broad compatibility with ICP units. Ideal for replacing aging or worn-out switches, it helps maintain system efficiency and prevents problems such as coil freezing or compressor damage.
Key Technical Advantages:
Technology and Performance
The ICP NASA401LA Pressure Switch Kit incorporates state-of-the-art sensing technology, delivering accurate pressure response and safety shutoff in the event of low refrigerant conditions. This ensures your HVAC system operates within manufacturer-recommended parameters, even in demanding low-temperature environments. In addition, the easy-to-follow installation kit allows HVAC technicians and advanced DIY users to install the switch with minimal downtime, keeping your system running at peak performance.
Upgrade your equipment with this low-ambient pressure switch kit to experience improved dependability and protection, especially as compared to less advanced, non-calibrated aftermarket switches. Its robust construction resists corrosion and electrical faults, providing a solid long-term solution for HVAC professionals and system owners seeking effective, energy-conscious operation. For service technicians and facilities maintenance teams focused on keeping their systems compliant and operational in cold weather, the ICP NASA401LA Pressure Switch Kit is a top-performing, professional-grade upgrade.
Choose the ICP NASA401LA Low-Ambient Pressure Switch Kit 174504 to safeguard your HVAC investment and ensure optimal low-temperature operation, meeting industry expectations for reliable, efficient performance.
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.



