A compact toilet can help free up floor space, but a smaller footprint does not always mean a shorter seat. If sitting down and standing up comfortably is a priority, compare the seat height as well as the toilet’s depth, bowl shape, flush system, and rough-in. These four one-piece options range from elongated comfort-height models to a smaller round-bowl design, so the right choice depends on both your bathroom layout and your needs.
Table of Contents
Quick Comparison
| Toilet | Seat height | Dimensions | Flush | Bowl |
|---|---|---|---|---|
| Casta Diva 17-Inch Elongated Compact Toilet | 17 inches | 27.17 × 14.37 × 25.39 inches | Dual flush, 1.1/1.6 GPF | Elongated |
| DeerValley Compact Round-Bowl Toilet | Not specified | 24.5 × 13⅜ × 28⅜ inches | Dual flush, 1.1/1.6 GPF | Round |
| Casta Diva 17.5-Inch Elongated Comfort-Height Toilet | 17.5 inches | 25.39 × 14.56 × 26.57 inches | Dual flush, 1.0/1.28 GPF | Elongated |
| HOMLYLINK 17.5-Inch Compact Tall Toilet | 17.5 inches | Not specified | Single flush, 1.28 GPF | Round |
Availability note: The supplied listing data marks the Casta Diva 17-inch model and the HOMLYLINK model as unavailable. Check their Amazon listings for current status before making plans to buy.
Our Picks: Best Comfort Height Compact Toilet reviews
1. Casta Diva 17-Inch Elongated Compact Toilet: A Shorter Comfort-Height Option
This one-piece Casta Diva combines an elongated bowl with a listed 17-inch seat height. That is a useful middle ground if you want a taller-than-standard feel but do not need the tallest option in this group. Its listed depth is 27.17 inches, so measure from the wall to check how it will fit in your bathroom.
The skirted body gives the toilet a smooth exterior rather than exposed curves around the trapway. The listing also describes a fully glazed trapway and a siphon flush with a MAP rating of 1000. Its dual-flush system uses 1.1 gallons for a lighter flush and 1.6 gallons for a full flush; the product listing says it meets WaterSense criteria.
The package is described as including the slow-close seat, installation hardware, wax seal, and pre-installed fill and flush valves. It uses a standard 12-inch rough-in. Keep in mind that the listed 14.37-inch width and elongated bowl still need to work with the space around your toilet, and the supplied listing data marks this model unavailable.
Pros:
- Listed 17-inch seat height with an elongated bowl
- Dual-flush system with a lower-volume option
- Skirted one-piece design has fewer exterior crevices
- Installation parts and a slow-close seat are listed as included
Cons:
- Listing data marks the model unavailable; confirm its current status
- Its 27.17-inch depth may be too long for some tight layouts
Verdict: Consider this model if you prefer an elongated bowl and a 17-inch seat, but verify availability and bathroom clearances before choosing it.
2. DeerValley Compact Round-Bowl Toilet: The Shortest Listed Footprint
The DeerValley is the most compact option by listed depth, at 24.5 inches, and it uses a standard round bowl. That shape can be a practical choice when front-to-back space is tight. Its listed width is 13⅜ inches, and the one-piece body has a skirted exterior intended to make the outside easier to wipe down.
This toilet has a dual-flush system rated at 1.1 and 1.6 gallons per flush. The listing describes a soft-close seat, a pre-assembled valve, and an installation kit with a wax ring, bolts, wrench, and manual. Those included parts may simplify setup, but the listing does not give an exact seat height, so do not assume it matches the 17- or 17.5-inch models in this guide.
The main trade-off is the round bowl: it saves space, but shoppers who specifically want an elongated seat may prefer one of the Casta Diva models. The product description gives a weight capacity of up to 250 pounds. Check the rough-in and the seat height with the seller before ordering if either measurement is essential to your decision.
Pros:
- Shortest listed depth in this comparison
- Round bowl suits bathrooms with limited front-to-back space
- Dual flush offers two water-use settings
- Installation kit and soft-close seat are listed as included
Cons:
- Exact seat height is not provided in the supplied specifications
- Round bowl may not suit shoppers who prefer an elongated seat
Verdict: Choose the DeerValley when saving space is the main goal, but confirm seat height before buying if comfort height is a must-have.
3. Casta Diva 17.5-Inch Elongated Toilet: The Tallest Listed Dual-Flush Pick
This Casta Diva pairs an elongated bowl with a listed 17.5-inch seat height. That makes it the tallest of the two elongated models here and a possible fit for people who find a higher seat easier to use. The listing describes the model as ADA-compliant; if you need a toilet for an accessibility project, confirm the relevant dimensions and requirements for your specific installation.
Its listed depth is 25.39 inches, shorter than the other elongated Casta Diva in this comparison. It has a skirted one-piece design, a quick-release soft-close seat, and a dual flush rated at 1.0 gallons for liquids and 1.28 gallons for solids. The listing also says it meets WaterSense criteria and describes a MAP 1000 siphon flush with a fully glazed trapway.
The toilet uses a standard 12-inch rough-in, and the listed package includes installation hardware, a wax seal, and a pre-installed fill and flush valve. Its 14.56-inch width and 17.5-inch seat height are worth checking against your room and comfort needs. Compared with the 17-inch Casta Diva, this one is taller and has a lower listed full-flush volume.
Pros:
- 17.5-inch listed seat height and elongated bowl
- Shorter listed depth than the other elongated Casta Diva
- Dual flush rated at 1.0/1.28 GPF
- Quick-release soft-close seat and skirted exterior
Cons:
- A taller seat is not the best fit for every user
- Confirm accessibility requirements and bathroom clearances before ordering
Verdict: This is a strong option to compare if you want an elongated bowl, a 17.5-inch seat, and a compact listed depth.
4. HOMLYLINK 17.5-Inch Compact Tall Toilet: A Simple Round-Bowl Design
HOMLYLINK’s compact tall toilet has a listed 17.5-inch seat height and a round bowl. That combination may suit you if you want a higher seat but prefer the space-saving shape of a round bowl. The product description names seniors, taller people, pregnant users, and people recovering from an injury as possible users who may benefit from a higher seat.
Unlike the dual-flush models above, this toilet uses a single 1.28-GPF flush. The listing describes a 360-degree jet siphon system and a soft-close seat. It also says the glaze has low water absorption and is designed to resist staining, though actual cleaning needs can depend on use and bathroom conditions.
The supplied specifications do not include the toilet’s overall dimensions or rough-in measurement. That makes it harder to judge fit from the product details alone. The listing data also marks this model unavailable, so confirm both current status and fit information before planning an installation.
Pros:
- 17.5-inch listed seat height with a round bowl
- Single-flush system uses 1.28 GPF
- Listing describes a 360-degree jet siphon flush
- Soft-close seat is listed as included
Cons:
- Overall dimensions and rough-in details are not provided in the supplied data
- Listing data marks the model unavailable
Verdict: Consider HOMLYLINK if a tall round-bowl toilet and a single 1.28-GPF flush fit your needs, but verify availability and installation measurements first.
How to Choose a Comfort-Height Compact Toilet
Measure the available space
Check the depth and width of the toilet area before choosing a model. Measure from the wall behind the toilet to the front edge of the available floor space, and account for nearby doors, cabinets, and fixtures. Compare those measurements with the product’s listed dimensions. A “compact” label alone does not confirm that a toilet will fit your bathroom.
Check the seat height you actually need
Seat height can affect how easily you sit down and stand up. The options here list heights of 17 or 17.5 inches, but the DeerValley listing does not give an exact measurement. Confirm how the manufacturer measures seat height and consider who will use the toilet most often. A taller seat may help some people, but it may feel less comfortable to others.
Choose a round or elongated bowl
A round bowl is often a sensible choice when front-to-back space is limited, as shown by the DeerValley and HOMLYLINK designs. An elongated bowl may be your preference for seating comfort, but it can take up more room. Compare the toilet’s full depth rather than relying only on bowl style.
Compare flush type and water use
Dual-flush models give you two flush settings, with the listed gallons per flush varying by model. The Casta Diva options and DeerValley toilet have dual-flush systems, while the HOMLYLINK uses a single 1.28-GPF flush. Consider whether you prefer separate flush choices, and check the product’s certification details if water efficiency is important to you.
Confirm the rough-in and installation details
The two Casta Diva listings specify a standard 12-inch rough-in. The supplied DeerValley and HOMLYLINK descriptions do not provide that measurement, so confirm it with the seller or manufacturer before ordering. Also check what is included, such as the wax seal, bolts, valves, and seat, and whether you have the tools and skills needed for installation.
Think about cleaning and seat features
A skirted exterior can make the outside of a toilet easier to wipe because it covers the trapway’s curves. A soft-close seat helps prevent a hard slam, while a quick-release seat can make removal easier for cleaning. These features differ by model, so check the product details to make sure they match your priorities.
Verify product status and accessibility needs
Listings and stock can change, so confirm that a model is available before you base a project on it. If you need a toilet to meet accessibility rules, do not rely on a product title alone. Verify the full set of measurements and requirements that apply to your home or project.
Frequently Asked Questions
What does comfort height mean for a toilet?
It generally refers to a taller seat height intended to feel closer to chair height than a lower toilet. Exact measurements and the way height is measured can vary, so check the product’s stated seat height rather than relying on the label alone.
Which toilet in this comparison has the shortest listed depth?
The DeerValley has the shortest listed depth at 24.5 inches. Its bowl is round, and its exact seat height is not provided in the supplied specifications.
Are these toilets suitable for a small bathroom?
They are described as compact, but fit depends on your room’s measurements, rough-in, and nearby fixtures. Compare each model’s dimensions with your available space before ordering. The HOMLYLINK and DeerValley supplied details do not include a rough-in measurement.
Which options have elongated bowls?
Both Casta Diva models have elongated bowls. DeerValley and HOMLYLINK have round bowls.
Do all four toilets have dual flush?
No. The two Casta Diva toilets and the DeerValley have dual-flush systems. HOMLYLINK uses a single-flush system rated at 1.28 GPF.
Does a product described as ADA-compliant meet every accessibility need?
Not necessarily. The 17.5-inch Casta Diva is described as ADA-compliant in its listing, but you should confirm the full measurements and applicable requirements for your installation before buying.
Which model should I choose if I want both a compact footprint and an elongated bowl?
Compare the two Casta Diva options. The 17.5-inch model has a listed depth of 25.39 inches, while the 17-inch model is listed at 27.17 inches. Check current availability and confirm the dimensions suit your bathroom.
Conclusion
For an elongated bowl with a taller seat and a compact listed depth, the Casta Diva 17.5-inch model is the most balanced match in this group. If front-to-back space is your main concern, the DeerValley has the shortest listed depth, but you should confirm its seat height. The HOMLYLINK offers a tall round-bowl design, while the 17-inch Casta Diva may suit shoppers who want a slightly lower seat. Before choosing any model, verify availability, rough-in, seat height, and the clearances in your bathroom.
