Best Niagara Toilet of 2026 — It Pays for Itself

Toilets are the single largest water user inside a home — accounting for 24% of indoor water consumption according to the EPA. Every best Niagara toilet in the Stealth line attacks that number directly, using just 0.8 gallons per flush — exactly half what federal law requires and 37.5% less than a standard high-efficiency toilet.

That’s not a marketing rounding — it’s the only 0.8 GPF toilet in the world. In a household of four flushing five times daily, it saves roughly 10,000 gallons of water per year versus a 1.28 GPF model.

The lineup breaks down clearly by use case. The Niagara 77000WHAI1 Stealth is the best Niagara toilet for most homeowners replacing a single bathroom fixture — it ships as a complete all-in-one kit with seat, wax ring, and floor bolts included. The Niagara 77001RWHAI1 Stealth Round solves space constraints: its round bowl saves nearly 2 inches of front projection, which is what determines fit in a compact bathroom.

The Niagara N7717 Stealth is what property managers and contractors specify when outfitting multiple bathrooms, since buying without the bundled seat drops the per-unit cost meaningfully at volume. This guide covers which model fits your bathroom and what Niagara-specific factors to verify before ordering.

If you’re evaluating water-saving options across brands, our guide to the best dual flush toilets puts the Niagara Stealth dual flush in context against TOTO and Kohler alternatives.

Niagara 77000WHAI1 Stealth — Best Niagara Toilet for Most Homes

The Niagara 77000WHAI1 is the version of the Stealth that actually makes sense for a homeowner doing a single-bathroom replacement. The “WHAI1” suffix stands for the all-in-one packaging — seat, wax ring, floor bolts, and caps all ship together. You don’t hunt down separate components.

For a bathroom used by 2–4 adults daily, the single-push top button delivers a measured 0.8 GPF flush that handles solid waste through the air transfer tube mechanism rather than brute water volume. The 17-inch EZ height rim — sometimes called comfort height — meets ADA height requirements when fitted with a standard seat, which matters for homeowners over 60 or anyone with joint issues.

Flush performance sits at a MaP score of 800g — verified by the independent Maximum Performance testing program. That means this toilet can clear 800 grams of solid waste in a single flush at only 0.8 gallons. For context, a 160-pound adult produces roughly 454 grams of waste daily. The Stealth clears nearly double that in one go.

The flapperless canister design eliminates the rubber flapper — the part that fails in every other toilet within 3–7 years. No flapper means no chain to tangle, no seal to degrade, and no phantom running between flushes. Paired with the Fluidmaster 400A fill valve that stays submerged throughout the fill cycle, tank refill noise drops to near zero.

The 8″ × 6″ water spot in the bowl prevents odor and surface smearing despite the ultra-low water volume. Most 1.28 GPF gravity toilets have water spots in the 10″ × 7″ range — the Stealth’s smaller spot is by design, maintained by air pressure in the trapway rather than water fill depth.

Homeowners who switch from a 1.6 GPF toilet can expect annual savings of roughly 12,000–14,000 gallons in a household of four flushing five times daily. At $0.01 per gallon (median US water/sewer rate), that’s $120–$140 per year in direct savings — meaning this toilet earns back its purchase price in 2–3 years.

Honest limitation: The included plastic toilet seat is functional but basic — no soft-close mechanism, no quick-release hinges. If soft-close matters to you or your household, budget an additional $25–$45 for a quality aftermarket seat. The Stealth tank’s unique geometry also means not every elongated seat on the market will align perfectly at the rear — Niagara’s own replacement seats are the safest fit.

Niagara 77001RWHAI1 Stealth Round — Best Niagara Toilet for Small Bathrooms

The 77000WHAI1 is the right call for most primary bathrooms. The 77001RWHAI1 solves the problem the elongated model creates: the round bowl projects 27 inches front-to-wall compared to the elongated’s 28.875 inches — a small gap that makes or breaks the fit in bathrooms under 56 inches of clearance from wall to door swing.

The Niagara 77001RWHAI1 runs the identical Stealth vacuum-assist system as its elongated sibling — same 0.8 GPF, same flapperless canister valve, same Fluidmaster 400A fill valve, same 800g MaP score. What changes is the bowl geometry: the round front shortens the front projection by 1.875 inches. In a compact powder room or guest bath where the door swings inward and floor plan is under 56 inches front-to-wall, that difference is what determines whether you can open the door fully while the toilet is occupied.

For older homes built before 1960 — where bathrooms were frequently tighter by design — the round bowl is the correct choice. It’s also appropriate for half-baths, mudroom bathrooms, and any secondary bathroom where the primary users are adults who find comfort height unnecessary. The 16-inch bowl height here is 1 inch lower than the elongated version. That’s a meaningful distinction for household members under 5’4″ who find the 17-inch height leaves their feet partially elevated.

The water savings profile is identical to the elongated model: a household of four flushing five times daily saves approximately 10,000 gallons annually against a 1.28 GPF toilet, or 14,600 gallons against an old 1.6 GPF model. At $220–$250 current retail, this toilet reaches payback in 2–3 years at median U.S. water rates, and faster in high-rate cities like San Francisco, Seattle, or Atlanta where water/sewer bills run $0.015–$0.02 per gallon combined.

Honest limitation: Round bowls reduce flush efficiency at 0.8 GPF versus elongated bowls — the shorter bowl length limits the surface water the siphon action contacts during the flush cycle. For heavy daily use (households with 5+ people), the elongated 77000WHAI1 is more reliable. The round model shines in low-to-moderate use bathrooms: 1–2 users or a guest bath flushed fewer than 8–10 times daily.

Niagara N7717 Stealth Elongated — Best Niagara Toilet for Rental Properties & Contractors

The all-in-one kits above include a seat because they’re built for homeowners. The N7717 is the same Stealth elongated bowl without the bundled extras — sold at a lower per-unit cost that becomes significant when you’re outfitting 4 units, 10 units, or an entire property portfolio.

The Niagara N7717 runs the same Stealth technology as the WHAI1 kit but ships as a bowl-and-tank combo without a seat. For a property manager outfitting 6 rental units in a building, buying seats separately at $20–$30 each in bulk from a commercial supply house saves $30–$60 per unit over the all-in-one price.

That’s a meaningful number when you’re writing a check for 12 toilets at once. Contractors who install their preferred commercial-grade slow-close seats already prefer this configuration since they’re not paying for two seats per unit.

From a performance standpoint, the N7717 is functionally identical to the 77000WHAI1. Same 0.8 GPF, same MaP 800g score, same vitreous china construction, same flapperless system, same 10-year warranty.

For rental properties specifically, the water savings case is compelling from a property investment lens: a 10-unit building where each unit has 2 bathrooms and 2.5 residents flushing 5 times daily would save approximately 250,000 gallons of water annually by switching from 1.6 GPF toilets. At median commercial water/sewer rates, that’s roughly $2,500 in annual utility savings — a number that shows up on an NOI statement.

Many U.S. municipalities offer WaterSense rebates for replacing pre-1994 toilets with certified UHETs. The Niagara Stealth qualifies for most of these programs. Rebates range from $50 to $200 per toilet depending on the utility district — California’s Metropolitan Water District has historically offered some of the largest, up to $75 per toilet for commercial property owners. A contractor installing N7717 units across 20 bathrooms in a qualifying district could recoup $1,000–$4,000 in rebates alone.

Honest limitation: No seat is included — this is deliberate for contractor buyers but inconvenient for a homeowner who assumed a toilet ships complete. Budget $25–$60 for a quality elongated slow-close seat.

Also note that Niagara’s proprietary replacement parts — specifically the inner Stealth chamber and the air transfer tube — are not available at Home Depot or Lowe’s. For a rental property, this means a service call for a failed internal component requires ordering from Niagara directly at 1-800-831-8383, with typical lead times of 3–7 business days.

Three Things Every Niagara Toilet Buyer Needs to Know Before Purchasing

The Niagara Stealth is a genuinely different toilet — not just in water volume, but in how its flush mechanism works. That difference creates three purchase considerations that are unique to this brand. Get these right before you buy and the toilet will perform exactly as designed. Miss any one of them and you’ll be troubleshooting a problem that has nothing to do with the product being defective.

Head-to-Head: Which Niagara Stealth Is Right for Your Situation?

Frequently Asked Questions — Best Niagara Toilet

What is the best Niagara toilet for a primary bathroom?

The Niagara 77000WHAI1 Stealth is the best Niagara toilet for a primary bathroom used by 2–5 adults daily. Its elongated bowl, 17-inch EZ height, and all-in-one packaging make it the most complete replacement option for a main bathroom. The 0.8 GPF single flush handles MaP-verified 800 grams of solid waste in one cycle, and the flapperless design eliminates the maintenance failure point common to every competing brand.

If your bathroom has adequate clearance — 56 inches or more from wall to door swing — and normal municipal water pressure above 25 PSI, this is the model to buy.

Does the Niagara Stealth toilet have flushing problems?

Some Niagara Stealth owners report incomplete flushes, and the cause is almost always one of three things: water pressure below 20 PSI at the supply line, the tank not seated properly on the bowl (the seal between the tank and bowl must be airtight for the vacuum system to work), or excessive toilet paper per flush.

In homes with 40–80 PSI water pressure and correct installation, the 0.8 GPF flush clears waste reliably in one cycle in approximately 95% of flushes based on real-world owner reports. If double-flushing occurs consistently, check the tank-to-bowl gasket alignment before calling customer service — a slightly misaligned tank defeats the vacuum seal and is the most common installation error.

How does the Niagara Stealth compare to TOTO and Kohler?

The Niagara Stealth outperforms both TOTO and Kohler on a single metric — water consumption — since 0.8 GPF has no competition in residential toilet manufacturing. However, TOTO’s Drake II and UltraMax II offer SanaGloss ceramic glazing that actively repels bacteria and waste smear at 1.28 GPF. Kohler models like the Cimarron carry a larger retail parts network, meaning a failed fill valve can be fixed with a $12 part from a nearby hardware store the same afternoon.

The Niagara wins on operating cost and water conservation. TOTO and Kohler win on parts availability, ceramic coating technology, and brand-service infrastructure. See our full TOTO vs. Kohler vs. American Standard comparison for a detailed side-by-side.

Niagara Stealth vs. TOTO: Which Brand Actually Saves You More?

Niagara and TOTO sit at opposite ends of the water-efficiency spectrum. The Stealth wins on raw consumption — 0.8 GPF versus TOTO’s best at 1.0 GPF (Eco UltraMax) or 1.28 GPF (Drake II). That’s not a close comparison.

In a household of four flushing five times daily, the gap between 0.8 and 1.28 GPF saves approximately 2,920 gallons per year. At $0.01 per gallon all-in (water plus sewer), the Niagara saves $29 more annually per toilet than a TOTO Drake II — and that advantage compounds across a multi-bathroom home.

However, TOTO’s SanaGloss ceramic glaze is a genuine differentiator — it creates an ion-barrier surface that resists waste adhesion at the molecular level. The Niagara’s standard vitreous china bowl shows streaking sooner at 0.8 GPF because there’s simply less water rinsing the sides on each flush.

Homeowners who clean toilets less frequently than weekly may find the TOTO bowl stays cleaner between cleaning sessions. Niagara wins on operating cost; TOTO wins on bowl hygiene and parts availability. See our best TOTO toilets guide for a full model breakdown.

Niagara Dual Flush Toilet: What the 0.5/0.95 GPF Option Adds

Niagara offers a dual flush version of the Stealth — the Original Dual Flush — rated at 0.5 GPF for liquid waste and 0.95 GPF for solid waste. The two-button top-flush actuator is clearly labeled for each mode.

For households that flush liquid waste 3–4 times per day and solid waste once or twice, the math on the dual flush version yields additional savings: a household using the 0.5 GPF mode for 60% of flushes and 0.95 GPF for 40% averages approximately 0.68 GPF — meaningfully below even the 0.8 GPF single flush.

The tradeoff is a more complex internal mechanism with two actuator buttons and a secondary chamber. The single-flush Stealth models reviewed above have a simpler mechanical profile and a longer track record of reliability.

For households with young children or older adults who prefer one-button simplicity, the single-flush 77000WHAI1 remains the better choice. For environmentally-motivated households comfortable with a two-button system, the Niagara dual flush toilet adds meaningful additional savings. Our best dual flush toilet guide compares the Niagara dual flush against TOTO Aquia IV and American Standard H2Option.

Water Saving Niagara Toilet: The Real Numbers Behind the Claims

The phrase “water saving toilet” gets used loosely across the industry. Here’s what it actually means in dollar terms for a Niagara Stealth installation. The EPA classifies any toilet at 1.28 GPF or below as high-efficiency (HET). Toilets at 0.8 GPF qualify as Ultra-High-Efficiency Toilets (UHET) — a separate, higher certification that the Niagara Stealth is the only residential toilet in the USA to carry as a single-flush model.

Against a 1.6 GPF toilet still running in millions of pre-2000 American homes, the Niagara Stealth saves 0.8 gallons per flush — 50% of the federal maximum. That’s the starting point for the math.

For a household of four adults flushing 5 times daily, annual savings reach 5,840 gallons against a 1.28 GPF toilet and 11,680 gallons against a 1.6 GPF model. Combined water and sewer rates in U.S. cities range from $0.007 per gallon (rural areas) to $0.022 per gallon (San Francisco). At the median rate of approximately $0.01 per gallon, this water saving Niagara toilet saves $58–$117 per year per toilet.

Multiply that across a household with 2–3 bathrooms, and the total annual utility impact reaches $116–$351. The best Niagara toilet for maximum savings is the single-flush 77000WHAI1 Stealth — our top-rated pick throughout this guide — and its performance is verified by EPA WaterSense certification and independent MaP 800g testing, not manufacturer claims. If you’re still comparing water-saving brands, our best flushing toilets guide ranks the top performers across all GPF tiers.