How to Choose a Toilet: Complete Buyer's Checklist 2026

Step 1: Measure the Rough-In Before You Do Anything Else

Most toilets sold online and at home improvement stores are designed for a 12-inch rough-in. If your measurement is 10 or 14 inches, that narrows the field considerably. TOTO makes the Drake and Entrada in 10-inch versions; Kohler offers several Highline models in 10-inch and 14-inch configurations; American Standard provides the Cadet 3 in all three rough-in sizes.

What bowl shape should I choose: round or elongated?

How do I read a MaP score and why does it matter?

Models that consistently earn 1,000-gram MaP ratings include the TOTO Drake (CST744EL) at 1.6 GPF, the TOTO Drake II (CST454CEF) at 1.28 GPF, the TOTO UltraMax II (MS604114CEFG) at 1.28 GPF, the American Standard Champion 4 at 1.6 GPF, and the Kohler Cimarron with the AquaPiston flush valve. The American Standard Cadet 3 earns 1,000 grams at both 1.6 GPF and 1.28 GPF versions. The Woodbridge T-0001 earns 800 grams, which is solid for its price range.

What GPF rating should I choose, and which toilets qualify for EPA WaterSense?

Dual-flush toilets offer a partial-flush option (typically 0.8 GPF or 1.0 GPF for liquid waste) alongside a full flush (1.28 or 1.6 GPF). The TOTO Aquia IV is the most-reviewed dual-flush model on the market, earning a 1,000-gram MaP score on its full 1.28-GPF cycle. The Woodbridge T-0001 also uses a dual-flush design with a 1.0/1.6 GPF split. Dual-flush toilets deliver meaningful water savings in households where occupants use the lower setting consistently, but the savings disappear if users always press the full-flush button.

One-piece vs two-piece toilet: which is better for most bathrooms?

What toilet height is right for adults, seniors, and ADA compliance?

When planning an ADA-compliant bathroom, toilet height is only one component. ADA guidelines also require at least 18 inches of clearance from the toilet centerline to a side wall or obstruction, a minimum 60-inch turning radius in the bathroom, and grab bars rated for 250 pounds on the side and rear walls. The TOTO Drake II and Kohler Cimarron are both available in comfort-height configurations and are commonly specified in accessible remodels. For more on this topic, see our ADA-compliant toilet guide.

Step 2: Choose Your Flush Technology

Understanding flush mechanisms prevents expensive mistakes. The four types found in residential toilets sold in 2026 are gravity-flush, pressure-assist, double cyclone / tornado, and dual-flush. Each has a distinct application.

Gravity-flush is the default in residential toilets. Water falls from the tank and creates a siphon that pulls waste through the trap. The TOTO Drake, Kohler Highline, American Standard Cadet 3, and Woodbridge T-0001 all use gravity-flush. Modern designs can achieve 1,000-gram MaP at 1.28 GPF, making gravity-flush fully capable for most homes.

Pressure-assist uses a pressurized vessel inside the tank to force water into the bowl at higher velocity. Sloan Flushmate is the dominant residential cartridge. These suit commercial settings or homes with chronic main-line clogging but are louder and more complex to repair than gravity models. See our pressure-assisted toilet roundup.

TOTO Tornado Flush uses two or three rim nozzles to create a centrifugal rinsing action that eliminates traditional rim holes and reduces mineral buildup. The Drake II, UltraMax II, and Aquia IV all use it. It pairs especially well with TOTO's CeFiONtect glaze.

Dual-flush is a gravity-flush variant with two activation options -- partial flush (liquid) and full flush (solid waste). Our dual-flush vs single-flush article covers water savings in detail.

Step 3: Evaluate Trapway Size and Glazing

The trapway is the S-curved channel at the base of the bowl through which waste exits. A larger, fully glazed trapway reduces the risk of clogs and allows larger waste volumes to pass without resistance. The American Standard Champion 4 uses a 2-3/8-inch trapway -- the widest in residential production -- with a 2.125-inch passageway and has a well-documented reputation for clog resistance. Most other quality toilets use a 2-inch or 2.125-inch passageway.

Glazing refers to the ceramic coating inside the trapway. Fully glazed trapways (where the glaze extends through the entire passage) are smoother and resist buildup better than partially glazed designs. TOTO's CeFiONtect glaze is an ion-barrier glaze that creates a surface so smooth that waste and bacteria have difficulty adhering. Kohler's vitreous china construction is fully vitrified, providing comparable smoothness without a specialty coating. American Standard's EverClean glaze contains an antimicrobial agent that, per the brand's published specifications, inhibits mold, mildew, and bacteria growth on the surface.

Skirted (concealed trapway) designs enclose the trapway behind a flat ceramic panel, eliminating the curved exterior protrusion. This is purely aesthetic -- it does not change the functional trapway dimensions -- but it dramatically simplifies exterior cleaning because there are no crevices to scrub. Skirted models from Kohler (Veil), TOTO (Nexus), Swiss Madison (St. Tropez), and Woodbridge (T-0001) are popular in modern bathroom designs. For more detail, see our skirted vs exposed trapway comparison.

Step 4: Confirm Your Installation Requirements

Beyond rough-in distance, confirm three additional installation parameters before purchasing.

Water supply location. Most floor-mounted toilets have the supply line connection on the left side of the tank base (when facing the toilet). Verify this matches your existing stub-out location, or budget for a braided supply line long enough to reach. Standard supply lines are 12 inches; some installations require 16 or 20 inches.

Floor flange height. The closet flange should sit at or slightly above the finished floor surface. If yours is recessed -- common in older homes where tile was installed on top of an existing floor -- a flange extender or offset wax ring is needed before installation. Installing a toilet on a recessed flange without compensation causes rocking and wax ring failure within a year.

Wall-hung considerations. Wall-hung toilets mount to an in-wall carrier frame and require finished wall depth of at least 4.5 inches. Installation is substantially more complex than floor-mounted toilets and typically requires a licensed plumber. TOTO, Kohler, and Swiss Madison offer the widest selection. Our wall-hung installation guide covers framing requirements in detail.

Step 5: One-Piece, Two-Piece, or Wall-Hung -- Configuration Summary

Step 6: Assess Brand Reliability and Warranty

Warranty terms vary significantly. TOTO offers a one-year warranty on vitreous china and flushing hardware. Kohler offers a limited lifetime warranty on flushing mechanics and vitreous china -- one of the strongest in the industry. American Standard provides a five-year warranty on flushing components. Gerber offers a limited lifetime warranty on vitreous china and ten years on the flushing mechanism. Woodbridge and Swiss Madison carry one-year limited warranties; their long-term parts availability and service networks are less established than the major three.

For a primary bathroom with daily heavy use, investing in TOTO or Kohler pays off over time. For a guest bathroom or vacation rental, Woodbridge and Swiss Madison offer strong visual value at a lower price. See our guide to the best flushing toilets for detailed per-category picks.

Complete Buyer's Checklist: All Factors at a Glance

Recommended Models by Buyer Type

Best overall for most buyers: The TOTO Drake II (CST454CEF) earns a 1,000-gram MaP score at 1.28 GPF, carries EPA WaterSense certification, uses the Tornado Flush system, and ships with TOTO's SoftClose seat in several SKUs. It is available in a comfort-height configuration (CEFG suffix). Owner reviews across aggregated retail platforms consistently place it among the top three most-satisfied toilet purchases in its price range.

Best for clog-prone households: The American Standard Champion 4 (2034.014) uses the widest trapway in its class (2-3/8 inches) and earns a 1,000-gram MaP score at 1.6 GPF. If clogging is a recurring problem in your home, the Champion 4's oversized passageway and EverClean surface are a strong combination. Note it uses 1.6 GPF, so WaterSense rebates do not apply.

Best one-piece design: The TOTO UltraMax II (MS604114CEFG) integrates Tornado Flush, CeFiONtect glaze, 1.28 GPF, 1,000-gram MaP, and a skirted profile into one unit. The Woodbridge T-0001 is a compelling lower-priced alternative with an 800-gram MaP score and dual-flush design.

Best for water efficiency and dual-flush: The TOTO Aquia IV achieves 1,000 grams at 1.28 GPF (full flush) and 0.9 GPF (partial cycle). The Swiss Madison St. Tropez earns 600 grams at 1.28 GPF with a clean skirted aesthetic at a lower price.

Best for budget buyers: The American Standard Cadet 3 (1.28 GPF version) earns 1,000 grams and carries WaterSense certification. The Gerber Ultra Flush (21-714) matches that score at 1.28 GPF. See our best toilets under $300 roundup for more options.