HOROW vs Casta DIVA: Toilets Compared by Specs
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The HOROW T0338W and Casta Diva CD-W001 are both one-piece ADA-height toilets designed for accessibility. They share an elongated bowl shape and a standard 12-inch rough-in size. The main difference lies in their flushing technology. HOROW uses a traditional dual-flush siphon system. Casta Diva employs an air-pressure-assisted mechanism. This distinction affects water usage and flush power. You should compare these specs to find the best fit for your bathroom.
Key differences
| Aspect | HOROW T0338W ADA Height One-Piece Toilet | Casta Diva Air-Pressure ADA One-Piece |
|---|---|---|
| Flush Type | Dual flush (1.1/1.6 GPF) | Air-pressure-assisted (1.0 GPF) |
| Flush Power | Standard siphon flush | MAP score of 1000g |
| Seat Height | 17.3 inches | 17.2 inches |
| Installation Rough-In | 10-inch or 12-inch options | 12-inch standard |
| Special Features | Soft-close seat | Foot-kick or side-button flush |
| Warranty | 1-year limited warranty | 1-year limited service |
Which one should you choose?
Choose HOROW T0338W ADA Height One-Piece Toilet if
- You prefer a traditional dual-flush system to save water on liquid waste.
- You need flexibility with rough-in sizes, as HOROW offers 10-inch options.
- You want a soft-close seat included for quieter operation.
Choose Casta Diva Air-Pressure ADA One-Piece if
- You want a highly efficient 1.0 GPF flush with strong air-pressure assistance.
- You need a hands-free flushing option for hygiene or accessibility.
- You prefer a skirted base design that is easier to clean.
Verdict: Choose the HOROW T0338W if you value traditional flushing reliability and flexible rough-in sizing. Select the Casta Diva CD-W001 if you prioritize advanced air-pressure technology and hands-free convenience. Both models meet ADA height requirements for comfortable seating.
HOROW vs Casta DIVA Toilets Compared
Flush technology
HOROW uses a dual-flush siphon system with two options: 1.1 GPF for liquid waste and 1.6 GPF for solid waste. This lets you choose the right water volume for the job. Casta Diva relies on a patented air-pressure-assisted system. It uses a single 1.0 GPF flush. This system pushes air to create a stronger jet, even in low-pressure areas. Casta Diva also achieves a MAP score of 1000g, indicating strong waste removal. HOROW does not list a MAP score. If you want water flexibility, HOROW is better. If you want maximum power per flush, Casta Diva wins.
Water efficiency
Both toilets aim to save water while maintaining performance. HOROW offers a low 1.1 GPF option on its dual flush. The higher option is 1.6 GPF. Casta Diva uses a fixed 1.0 GPF flush. It meets EPA WaterSense criteria. Casta Diva’s single flush uses less water than HOROW’s higher setting. However, HOROW allows you to use 1.1 GPF for liquids, which is close to Casta Diva’s amount. Casta Diva guarantees a lower maximum usage per flush. HOROW gives you control. You might save more with Casta Diva if you always use the full flush. HOROW is better for occasional heavy loads.
Seat height
Accessibility is key for both models. HOROW provides a seat height of 17.3 inches from the floor to the seat. Casta Diva offers 17.2 inches. Both meet ADA chair height standards. The difference is only 0.1 inch. This tiny gap is unlikely to affect comfort or usability for most users. Both designs are elongated, which adds legroom. Both include soft-closing seats for quieter operation. Since the heights are virtually identical and both comply with ADA guidelines, neither has a practical advantage. You will experience the same ease of sitting and standing with either choice.
Dimensions and fit
HOROW measures 26.6 inches in length, 15 inches in width, and 26 inches in height. It weighs 99.2 pounds. Casta Diva is slightly longer at 26.9 inches. It is narrower in height at 19.3 inches. Both are 15 inches wide. Casta Diva’s lower profile might fit better in rooms with low ceilings. HOROW is taller and heavier. Casta Diva includes a wax ring and mounting hardware. HOROW does not list included installation parts. If your bathroom has tight vertical clearance, Casta Diva is the better fit. HOROW is more compact in height.
Installation rough-in
HOROW offers flexibility with rough-in sizes. You can choose between a 10-inch or a 12-inch rough-in. This helps if your bathroom plumbing is not standard. Casta Diva only offers a standard 12-inch rough-in. If your home has a 10-inch plumbing offset, HOROW is the only viable option. Casta Diva requires a 12-inch setup. Both use a 12-inch rough-in as their primary configuration. For standard bathrooms, both work. For older homes or unique layouts, HOROW provides a clear advantage. You must check your existing pipe distance before buying either.
Choose Your Best ADA Toilet Match
Users needing dual flush control
The HOROW T0338W offers dual flush options at 1.1 GPF and 1.6 GPF. This allows you to select the exact water volume needed for liquid or solid waste. The 17.3-inch seat height provides ADA-compliant comfort. The one-piece design simplifies cleaning, and the 2-inch trapway supports strong siphon flushing performance.
Those wanting hands-free hygiene
The Casta Diva CD-W001 features a foot-kick or side-button flush for hands-free operation. This is ideal for hygienic use without touching surfaces. The air-pressure-assisted system delivers a powerful flush with just 1.0 GPF. The 17.2-inch seat height ensures ADA compliance, and the non-electric design works without power.
Buyers seeking maximum flush power
The Casta Diva CD-W001 achieves a MAP score of 1000g, indicating superior waste removal capability. Its patented air-pressure-assisted system ensures efficiency even in low-pressure environments. The 1.0 GPF usage meets EPA WaterSense criteria. This combination of high performance and water conservation makes it a strong choice for demanding users.
The products compared
HOROW T0338W ADA Height One-Piece Toilet
Best for: small bathrooms needing ADA height
- Flush Type
- Dual flush
- Flush Volume
- 1.1/1.6 GPF
- Rough-In Size
- 12"
- Seat Height
- 17.3"
- Bowl Shape
- Elongated
- MaP Flush Score
- 1000g
View on Amazon: HOROW T0338W ADA Height One-Piece Toilet Affiliate link
This HOROW T0338W is a one-piece elongated toilet with a 17.3-inch ADA chair height. It uses a dual flush system at 1.1 or 1.6 GPF to save water. The compact design measures 26.6 inches deep and 15 inches wide. It includes a soft-close seat and a fully glazed 2-inch trapway for efficient flushing. This model suits small bathrooms needing accessible height.
Pros
- ADA-compliant 17.3-inch seat height for easier access
- Dual flush options of 1.1 and 1.6 GPF reduce water usage
- Compact 15-inch width fits small bathroom layouts
- One-piece design with a fully glazed 2-inch trapway for easier cleaning
Cons
- Heavier build at 99.2 pounds makes installation more difficult
- 12-inch rough-in size limits compatibility with 10-inch wall setups
- Chrome flush buttons may show water spots or fingerprints more than matte finishes
Good fit if
- You need an ADA-compliant height for easier sitting and standing
- You have a small bathroom requiring a compact 15-inch width
- You want a one-piece design that is easier to wipe down
Skip if
- Your bathroom requires a 10-inch rough-in connection
- You prefer a two-piece toilet for lower weight
- You want a matte black finish instead of white
Verdict: HOROW T0338W ADA One-Piece Toilet provides accessible height and water efficiency in a compact footprint. It fits small spaces well but requires a 12-inch rough-in and careful handling due to its weight.
Casta Diva Air-Pressure ADA One-Piece
Best for: Accessible, water-efficient, hands-free flushing
- Flush Type
- Air-pressure assisted
- Flush Volume
- 1.0 GPF
- Rough-In Size
- 12"
- Seat Height
- 17.2"
- Bowl Shape
- Elongated
- MaP Flush Score
- 1000g
View on Amazon: Casta Diva Air-Pressure ADA One-Piece Affiliate link
This Casta DIVA one-piece toilet uses air-pressure-assisted flushing to deliver strong performance at just 1.0 GPF. The elongated bowl and 17.2-inch ADA-compliant seat height make it accessible for seniors. It includes a soft-close seat and skirted base for easy cleaning. The unit requires no electricity and fits standard 12-inch rough-ins. It is a solid option for water-conscious buyers who need reliable flushing power.
Pros
- Air-pressure-assisted flush system provides powerful siphon action
- 1.0 GPF flow rate meets EPA WaterSense criteria
- 17.2-inch ADA-compliant seat height for easier access
- Skirted base and elongated bowl simplify cleaning
- Foot-kick or side-button flush offers hands-free operation
Cons
- 1-year limited warranty is shorter than typical industry standards
- No automatic flush sensor or remote control included
- Air-pressure mechanism may produce louder operation than gravity models
Good fit if
- You need an ADA-compliant height for accessibility
- You want to conserve water without sacrificing flush power
- You prefer a hands-free flush option for hygiene
Skip if
- You require a standard 15-inch rough-in size
- You prefer a quiet, gravity-fed flush system
- You want a longer manufacturer warranty period
Verdict: Casta DIVA Elongated One-Piece Air-Pressure Toilet combines accessible height with efficient water use. It fits buyers who prioritize flush power and hygiene features over quiet operation.
Specifications side by side
| Spec | HOROW T0338W ADA Height One-Piece Toilet | Casta Diva Air-Pressure ADA One-Piece |
|---|---|---|
| Flush Type | Dual flush | Air-pressure assisted |
| Flush Volume | 1.1/1.6 GPF | 1.0 GPF |
| Rough-In Size | 12" | 12" |
| Seat Height | 17.3" | 17.2" |
| Bowl Shape | Elongated | Elongated |
| MaP Flush Score | 1000g | 1000g |
| Toilet Type | One-piece | One-piece |
| Design Style | not stated | Modern |
| Target Space | Small Bathrooms | not stated |
| Color | White with Chrome Button | White |
| Shape | Elongated | Elongated |
| Design | One Piece | One Piece |
| Dimensions | 26.6 × 15 × 26 inches | 26.9 × 15 × 19.3 inches |
| Weight | 99.2 pounds | not stated |
| Size | 12" Rough-in | not stated |
| Model | T0338W | CD-W001 |
Frequently asked questions
Which toilet is better for small bathrooms?
The HOROW T0338W is better for small spaces. Its compact footprint measures 26.6 inches in length and 15 inches in width. This design fits well in tighter areas. The Casta Diva is slightly longer at 26.9 inches. Both models maintain a narrow 15-inch width. You should choose the HOROW if minimizing length is your priority.
Do both toilets have ADA compliant seat heights?
Yes, both models feature ADA chair height seats. This standard height aids accessibility for users with mobility challenges. The HOROW T0338W reaches 26 inches in total height. The Casta Diva stands at 19.3 inches. Both are designed to meet accessibility standards. You get easy entry and exit with either choice.
How much do these toilets weigh?
The HOROW T0338W weighs 99.2 pounds. This substantial weight helps stabilize the unit during use. The Casta Diva does not list a specific weight in its published specifications. You may need to check the manufacturer directly for that data. The HOROW provides clear weight information for installation planning.
Is the flush button visible on the HOROW?
Yes, the HOROW T0338W includes a chrome button. This button is part of its dual-flush mechanism. You can see the metallic finish against the white porcelain. The Casta Diva description does not specify button details. It focuses on air-pressure technology instead. The HOROW offers a visible, tactile control interface.
What rough-in size do these toilets require?
Both toilets require a 12-inch rough-in size. This is the standard distance from the wall to the drain center. You must ensure your bathroom plumbing matches this dimension. The HOROW explicitly states this 12-inch requirement. The Casta Diva is also designed for this standard. Proper measurement is essential before installation.
Which toilet is one-piece construction?
Both the HOROW T0338W and Casta Diva CD-W001 are one-piece toilets. This design connects the tank and bowl into a single unit. It eliminates crevices where dirt and bacteria can accumulate. You get easier cleaning with either model. The seamless look also suits modern bathroom aesthetics. Both brands prioritize this durable, hygienic construction method.