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ICON HT473-ED 21 Gallon RV Holding Tank - Premium Waste Management Solution
The ICON HT473-ED is a professional-grade 21 gallon RV holding tank engineered for reliable waste management in recreational vehicles. Measuring 70 inches long by 17.75 inches wide by 7 inches high, this slim-profile tank is designed to fit tight spaces while providing ample capacity for extended trips. Pre-installed with level sensors and a convenient spigot drain, this tank delivers the quality and durability you expect from ICON Technologies.
Why Choose the ICON HT473-ED Holding Tank
ICON Technologies has built a reputation for manufacturing holding tanks with superior wall thickness and structural integrity. The HT473-ED features reinforced construction that resists cracking, warping, and leaking even under demanding conditions. With IAPMO and CSA certifications, you can trust this tank meets rigorous safety and quality standards. The pre-installed sensors eliminate guesswork about tank levels, while the integrated spigot makes draining fast and efficient.
Technical Specifications
- Model Number: HT473-ED
- Capacity: 21 Gallons
- Dimensions: 70" L x 17.75" W x 7" H
- SKU: 12422
- Weight: 69.29 lbs
- Material: High-density polyethylene with reinforced walls
- Features: Pre-installed level sensors and spigot drain
- Certifications: IAPMO and CSA certified
- Application: Black water, gray water, or combination waste holding
- Country of Origin: Canada (Manitoba)
Key Features and Benefits
Reinforced Construction for Long-Term Durability
Unlike standard holding tanks, the ICON HT473-ED is manufactured with extra material thickness throughout the tank body. This reinforced construction provides superior resistance to impacts, temperature fluctuations, and the corrosive nature of waste materials. The result is a tank that maintains its structural integrity year after year, reducing the need for costly replacements.
Pre-Installed Sensors and Spigot Save Installation Time
The HT473-ED comes with factory-installed level sensors that integrate seamlessly with your RV's monitoring system. The pre-mounted spigot drain is positioned for optimal flow and easy hose connection. These pre-installed components save hours of installation time and eliminate potential leak points from aftermarket modifications.
Slim Profile Design Fits Tight Spaces
With a height of just 7 inches, this 21 gallon tank is engineered for installations where vertical clearance is limited. The 70-inch length distributes capacity horizontally, making it ideal for mounting under RV floors, between frame rails, or in other confined spaces where traditional tanks won't fit.
Versatile Application for Multiple Waste Types
The HT473-ED can be configured for black water (toilet waste), gray water (sink and shower drainage), or a combination system. The chemical-resistant polyethylene construction handles all types of RV waste without degradation, giving you flexibility in your plumbing configuration.
Compatible RV Models and Applications
This holding tank is commonly used in travel trailers, fifth wheels, motorhomes, and camper conversions where a slim-profile 21 gallon capacity is required. The 70x17.75x7 dimensions make it particularly well-suited for:
- Replacement installations in older RVs with original ICON tanks
- Custom RV builds and conversions requiring low-profile waste storage
- Upgrade installations where increased capacity is needed in limited space
- Marine applications in boats and yachts with similar dimensional requirements
Installation and Compatibility Notes
Before ordering, carefully verify the dimensional requirements of your installation space. The HT473-ED requires 70 inches of length, 17.75 inches of width, and at least 7 inches of vertical clearance. Ensure your RV's sensor system is compatible with the pre-installed sensors, or plan to adapt your monitoring system accordingly. The spigot drain location should align with your existing plumbing or be accessible for new drain line routing.
Compare Similar ICON Holding Tanks
| Model | Capacity | Dimensions (L×W×H) | Part Number | Best For | View Details |
|---|---|---|---|---|---|
| HT473-ED | 21 Gallons | 70×17.75×7 | 12422 | Current Product - Slim profile, long tanks | You're here! |
| HT600A-SD | 18 Gallons | 48.5×25.5×6.5 | 14306 | Slightly smaller capacity, wider profile | View Details → |
| H3979 | 20 Gallons | 39×16×8 | 14393 | Compact alternative, similar capacity | View Details → |
| H3547 | 22 Gallons | 60×24×6 | 14252 | Slightly larger capacity, shorter length | View Details → |
| HT702-ED | 14 Gallons | 39.25×15.5×9 | N/A | Smaller capacity, compact design | View Details → |
| HT500-SD | 26 Gallons | 37.5×26×9.5 | N/A | Larger capacity, compact footprint | View Details → |
💡 Tip: When selecting a holding tank, prioritize dimensional fit first, then capacity. A tank that doesn't fit your space won't work regardless of capacity.
Complete Your RV Waste System
Maximize the performance and longevity of your new holding tank with these complementary products:
- Browse All RV Holding Tanks - Explore our complete selection of ICON and other premium holding tanks
- Replacement Parts & Fittings for RV Holding Tanks - Find sensors, drain valves, caps, and mounting hardware
- Shop All ICON Direct Products - View the complete ICON Technologies product line
Frequently Asked Questions
What's the difference between black water and gray water holding tanks?
Black water tanks hold toilet waste, while gray water tanks collect drainage from sinks and showers. The ICON HT473-ED can be used for either application - the tank material and construction are identical. The only difference is in your plumbing connections and how you label the tank for future reference.
How do I know if this tank will fit my RV?
Measure your available installation space carefully, accounting for all three dimensions (length, width, height). The HT473-ED requires exactly 70 inches of length, 17.75 inches of width, and 7 inches of height clearance. Also verify that mounting points, drain locations, and sensor wire routing will work with your RV's configuration.
Are the sensors compatible with my RV's monitoring panel?
ICON tanks use industry-standard sensor technology compatible with most RV monitoring systems. However, you should verify compatibility with your specific panel manufacturer. If you have questions about sensor compatibility, use our AI Live Chat for detailed product assistance.
Can I install this tank myself or do I need a professional?
Installation difficulty varies based on your RV's configuration and your mechanical skill level. Basic installations involve securing the tank, connecting drain plumbing, and wiring the sensors. If you're comfortable with basic RV maintenance, this is a manageable DIY project. For complex installations or if you're unsure, consult a qualified RV technician.
What warranty does ICON provide on this holding tank?
ICON Technologies stands behind their products with industry-leading quality standards. For specific warranty information and coverage details, please contact us through our AI Live Chat or refer to the documentation included with your tank.
Why Buy from ElkhartRVParts.com
As an authorized ICON Technologies dealer, we guarantee you're receiving genuine OEM-grade products backed by manufacturer specifications. Every HT473-ED tank ships directly from ICON's Canadian manufacturing facility, ensuring you receive a fresh, properly stored product. Our team understands RV holding tanks and can provide expert guidance on fitment, installation, and compatibility.
Need Help? Our AI Live Chat provides instant access to deep product knowledge and can help with fitment questions, compatibility concerns, and technical specifications. Don't guess - get expert assistance before you order.
Order Your ICON HT473-ED Holding Tank Today
Replace your failing holding tank with the proven quality of ICON Technologies. The HT473-ED delivers the capacity, durability, and reliability you need for worry-free RV adventures. With pre-installed sensors and spigot, you'll save installation time while gaining the peace of mind that comes with OEM-grade construction.
| Width (inches) | 17.75 |
|---|---|
| Height (inches) | 7 |
| Length (inches) | 70 |
| Weight (pounds) | 20 |
| Capacity (gallons) | 21 |
| Material thickness | Thicker amount of material |
- What are the dimensions of the icon holding tank ht473-ed? The ICON Holding Tank HT473-ED measures 70 inches in length, 17.75 inches in width, and 7 inches in height.
- What is the capacity of this holding tank? This holding tank has a capacity of 21 gallons.
- Is the icon holding tank suitable for both black and gray water? Yes, the tank can be used for black water, gray water, or a combination of both.
- Does this holding tank come with preinstalled fittings? Most ICON holding tanks, including this model, come with a preinstalled drain and level sensors.
- Is the icon holding tank ht473-ed certified to any standards? Yes, ICON tanks are certified to IAPMO and CSA standards, ensuring quality and reliability.
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