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ICON 150 Gallon RV Holding Tank - Maximum Capacity for Extended Travel
Upgrade your RV's waste management system with the ICON WT4014 150-gallon holding tank - one of the largest capacity tanks available for recreational vehicles. Engineered with heavy-duty polyethylene construction and thicker walls than standard tanks, this premium holding tank is built to withstand the rigors of mobile living while providing exceptional capacity for extended trips and full-time RVing.
Why Choose This ICON 150 Gallon Holding Tank?
Maximum Capacity for Extended Travel: With 150 gallons of holding capacity, this tank is ideal for full-time RVers, large families, or anyone who wants to extend time between dump station visits. The generous capacity means more freedom to boondock, dry camp, or stay at locations without full hookups.
Heavy-Duty Construction You Can Trust: ICON tanks are engineered with a thicker amount of polyethylene material compared to standard holding tanks. This enhanced construction provides superior strength, impact resistance, and longevity - critical for components that endure constant movement, temperature fluctuations, and the demanding conditions of RV life.
Factory-Installed Components: This tank comes with a preinstalled 3" raised FPT (Female Pipe Thread) drain and level sensors, eliminating the need for additional drilling or modifications. The raised drain design provides better flow and easier connection to your RV's plumbing system.
Certified Quality Standards: ICON holding tanks are certified to both IAPMO (International Association of Plumbing and Mechanical Officials) and CSA (Canadian Standards Association) standards, ensuring they meet rigorous safety and performance requirements for RV waste systems.
Versatile Application: This tank can be configured for black water (toilet waste), gray water (sink and shower drainage), or a combination system depending on your RV's specific needs and plumbing configuration.
Compare ICON Large Capacity Holding Tank Options
| Model | Capacity | Dimensions (LxWxH) | Weight | Best For | View Details |
|---|---|---|---|---|---|
| WT4014 | 150 Gallons | 71.5" x 66" x 8" | 94 lbs | Full-time RVers, large families, extended boondocking | Current Product |
| H3658 | 57 Gallons | 84" x 20" x 10.88" | 32 lbs | Long, narrow spaces; mid-size RVs | View Details |
| HT192-ED | 54 Gallons | 70" x 24" x 11" | 27 lbs | Standard RVs, weekend camping | View Details |
| HT543-ED | 48 Gallons | 70" x 28.5" x 8.5" | 29 lbs | Wider spaces, lower profile installations | View Details |
💡 Helpful Tip: When selecting a holding tank, carefully measure your available space and consider both capacity needs and physical dimensions. Larger capacity tanks require more installation space but provide extended time between dump station visits. If you need help selecting the right tank size, use our AI Live Chat for personalized assistance.
Product Specifications
- Part Number: WT4014
- SKU: 15198
- Brand: ICON Technologies
- Capacity: 150 Gallons
- Dimensions: 71.5" Length x 66" Width x 8" Height
- Weight: 94 pounds (empty)
- Material: Heavy-duty polyethylene with thicker wall construction
- Drain: 3" Raised FPT (Female Pipe Thread) - Preinstalled
- Level Sensors: Preinstalled
- Certifications: IAPMO and CSA certified
- Compatible Use: Black water, gray water, or combination systems
- Color: Natural polyethylene
- Barcode: 628423151989
Common Applications and Use Cases
The ICON WT4014 150-gallon holding tank is the ideal solution for various RV waste management scenarios:
- Full-Time RV Living: Maximum capacity for those who live in their RV year-round and want to minimize dump station visits
- Extended Boondocking: Perfect for dry camping and off-grid adventures where dump facilities aren't readily available
- Large Family Travel: Accommodate the waste management needs of multiple occupants without constant emptying
- Replacement for Damaged Tanks: Upgrade from a leaking or cracked holding tank with superior construction
- Capacity Upgrades: Replace smaller factory tanks to increase your RV's holding capacity
- Custom RV Builds: Ideal for custom conversions, toy haulers, or specialty RV applications requiring maximum waste capacity
- Commercial RV Applications: Suitable for rental RVs, mobile medical units, or other commercial applications
Installation Considerations and Compatibility
Professional Installation Highly Recommended: Due to the size, weight, and critical nature of holding tank installation, we strongly recommend having this tank installed by a qualified RV technician or service center. Proper installation is essential for leak-free operation and system integrity.
Space Requirements: Before ordering, carefully measure your available installation space. This tank requires a minimum clearance of 71.5" length x 66" width x 8" height, plus additional space for plumbing connections and access.
Structural Support: Ensure your RV's frame and mounting system can support the weight of the tank when full. A 150-gallon tank filled with water weighs approximately 1,250 pounds plus the tank weight (94 lbs), requiring robust mounting and support.
Plumbing Connections: The preinstalled 3" raised FPT drain is compatible with standard RV waste plumbing systems. Verify your existing plumbing configuration and ensure you have appropriate fittings and adapters.
Level Sensor Integration: The preinstalled level sensors need to be connected to your RV's monitoring system. Ensure compatibility with your existing tank level monitoring panel.
Related Products and Accessories
Complete your RV waste system upgrade or maintenance with these complementary products:
- Tank Fittings and Adapters: Ensure proper connections between your new tank and existing plumbing
- Dump Hose and Accessories: Quality dump hoses and fittings for efficient waste removal
- Tank Treatment Chemicals: Keep your holding tank fresh and functioning properly
- Level Sensor Replacements: Backup sensors for future maintenance needs
- Vent Caps and Filters: Reduce odors and maintain proper tank ventilation
Browse our complete selection of ICON Technologies RV parts and holding tanks for all your waste system needs.
Why ICON Technologies Holding Tanks?
ICON Technologies has built a reputation as a trusted manufacturer of RV holding tanks and waste system components. Here's what sets ICON apart:
- Thicker Material Construction: ICON uses more material in their tank walls compared to standard manufacturers, resulting in stronger, more durable tanks that resist cracking and damage
- Factory-Installed Components: Preinstalled drains and sensors eliminate the need for field modifications and ensure proper placement
- Rigorous Testing and Certification: All ICON tanks meet or exceed IAPMO and CSA standards for safety and performance
- Wide Range of Sizes: From compact 9-gallon tanks to this massive 150-gallon capacity, ICON offers solutions for virtually any RV application
- Proven Track Record: Thousands of RV owners trust ICON tanks for reliable, long-term performance
Shipping and Delivery Information
LTL Freight Shipping Required: Due to the size and weight of this holding tank, it must ship via LTL (Less Than Truckload) freight carrier. This specialized shipping method is designed for large, heavy items that exceed standard parcel carrier limits.
Delivery Timeline: LTL freight shipments typically take 14-18 business days for delivery. You will receive tracking information and the freight carrier will contact you to schedule delivery.
Delivery Requirements: LTL freight delivery is to a commercial address or residential curbside. If you need liftgate service or inside delivery, please contact us before ordering for a shipping quote with these additional services.
Inspection Upon Delivery: Carefully inspect the tank for any shipping damage before signing the delivery receipt. Note any damage on the delivery paperwork and contact us immediately if issues are found.
Frequently Asked Questions
Q: Can this tank be used for both black and gray water?
A: Yes, ICON holding tanks are designed to handle black water (toilet waste), gray water (sink and shower drainage), or combination systems. The tank material and construction are suitable for all RV waste applications.
Q: Does this tank come with mounting hardware?
A: The tank includes the preinstalled drain and level sensors, but mounting straps, brackets, and hardware are typically sold separately as they vary based on your specific RV's frame and installation requirements.
Q: How do I know if this tank will fit my RV?
A: Carefully measure your available installation space, accounting for the tank dimensions (71.5" x 66" x 8") plus clearance for plumbing connections. If you're unsure about fitment, use our AI Live Chat for assistance or consult with an RV service technician.
Q: What's the difference between this tank and standard RV holding tanks?
A: ICON tanks feature thicker polyethylene construction for enhanced durability, preinstalled drains and sensors for easier installation, and IAPMO/CSA certification for quality assurance. The thicker material provides better impact resistance and longer service life.
Q: Can I install this tank myself?
A: While experienced DIYers with RV modification skills may be able to install this tank, we strongly recommend professional installation due to the size, weight, structural requirements, and critical nature of proper holding tank installation.
Q: How long will this tank last?
A: With proper installation, use, and maintenance, ICON holding tanks can provide many years of reliable service. The thicker construction and quality materials contribute to exceptional longevity compared to standard tanks.
Q: What warranty does this tank have?
A: ICON Technologies provides warranty coverage on their holding tanks. Contact us for specific warranty terms and conditions.
Order Your ICON 150 Gallon Holding Tank Today
Upgrade your RV's waste management system with the maximum capacity and durability of the ICON WT4014 150-gallon holding tank. Whether you're a full-time RVer, serious boondocker, or simply want the freedom of extended capacity, this heavy-duty tank delivers the performance and reliability you need.
Need help with selection or installation questions? Use our AI Live Chat for deep product knowledge and personalized assistance with your RV holding tank needs.
| Width (inches) | 66 |
|---|---|
| Height (inches) | 8 |
| Length (inches) | 71.5 |
| Weight (pounds) | 94 |
| Capacity (gallons) | 150 |
| Material thickness | Thicker amount of material |
| Drain size (inches) | 3 |
- What are the dimensions of the icon wt4014 holding tank? The dimensions of the ICON WT4014 holding tank are 71.5 inches by 66 inches by 8 inches.
- What is the capacity of this icon holding tank? The ICON WT4014 holding tank has a capacity of 150 gallons.
- Is this holding tank suitable for both black and gray water? Yes, the ICON holding tank can be used for black water, gray water, or a combination of both.
- Does the icon wt4014 tank come with a drain and level sensors installed? Most ICON holding tanks, including this model, have a preinstalled 3-inch raised FPT drain and level sensors.
- What certifications does the icon holding tank comply with? The ICON holding tank is certified to meet IAPMO and CSA standards.
Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

