Niagara Power One Plus 0.8 GPF Concealed-Trapway Elongated Toilet

Niagara Power One Plus 0.8 GPF Concealed Trapway Elongated

The Niagara Power One Plus 0.8 GPF Concealed Trapway Elongated Toilet is Niagara Conservation's premium ultra-low-flow specification — combining the brand's signature 0.8 GPF water conservation engineering with a concealed (skirted) trapway design and elongated bowl comfort. At $349-$429 retail, Power One Plus positions as Niagara's most refined ultra-low-flow toilet, competing against value-tier dual-flush alternatives while offering the most aggressive single-flush water savings in the elongated-bowl segment.

Power One Plus's Position in Niagara's Catalog

• Niagara One: $329-$429 — modern skirted 1.0 GPF one-piece
• Power One: $279-$349 — basic 0.8 GPF two-piece
• Power One Plus (this model): $349-$429 — premium 0.8 GPF with concealed trapway
• Stealth Original: $249-$329 — 0.8 GPF vacuum-assist round-front
• Stealth Dual-Flush: $279-$369 — 0.8/1.28 GPF dual-flush

Concealed Trapway Design

The "Concealed Trapway" feature distinguishes Power One Plus from the basic Power One — the bowl's exterior conceals the trapway curve behind smooth ceramic walls (similar to skirted modern toilets), presenting cleaner contemporary visual lines than traditional bowls with visible trapway sculpting. Combined with 0.8 GPF water conservation and elongated bowl comfort, the concealed trapway delivers Niagara's most aesthetically refined ultra-low-flow specification.

0.8 GPF Single-Flush Engineering

At 0.8 GPF, Power One Plus uses approximately 38% less water than WaterSense 1.28 GPF standards. Niagara's engineered flush channel geometry and siphonic bowl design deliver MaP 800g+ performance at this ultra-low water volume — comparable raw flush performance to 1.28 GPF alternatives despite using less than two-thirds the water.

Elongated Bowl Comfort

Elongated bowl (~18.5" length) for comfortable seating — preferred over round-front for most modern installations with adequate bathroom floor space. Power One Plus's elongated configuration distinguishes it from the round-front Stealth Original.

Water Cost Savings Over 10-15 Years

• vs. WaterSense 1.28 GPF: approximately 2,400 gallons/year saved, $30-$50/year, $300-$500 over 10 years
• vs. Standard 1.6 GPF: approximately 4,000 gallons/year saved, $50-$80/year, $500-$800 over 10 years
• vs. Pre-1992 3.5 GPF: approximately 13,500 gallons/year saved, $160-$240/year, $1,600-$2,400 over 10 years

10-Year Vitreous China Warranty

Niagara's stronger china warranty (10 years vs. 5-year industry standard for value-tier brands). Among value-tier brands, only Delta (lifetime china) and American Standard (10-year china) match or exceed Niagara's coverage.

Specifications

• Form factor: Two-piece floor-mount, concealed trapway
• Bowl shape: Elongated
• Material: Vitreous china
• Flush volume: 0.8 GPF single-flush (ultra-low-flow)
• Flush technology: Engineered siphonic with optimized flush channel
• Rough-in: 12 inches
• Seat height: ~17 inches (ADA comfort height)
• Seat: Sold separately ($20-$45)
• Color: Glossy White
• Warranty: 10 years vitreous china, 1 year mechanical
• MaP rating: 800g+ at 0.8 GPF
• Certifications: WaterSense PLUS (exceeds standard), CalGreen Premium, ENERGY STAR

Installation

• Standard 12-inch rough-in
• Cold water supply line
• Wax ring + flange bolts ($15-$25 separate)
• Seat purchased separately
• Two-piece installation: 1.5-2 hours, $150-$350

Care

• Standard porcelain cleaners safe
• Pumice stones safe for mineral deposits
• The ultra-low-flow design may require occasional bowl rinse top-off for heavier waste loads
• Avoid steel wool

Pros

• Industry-leading water conservation — 38% less than WaterSense 1.28 GPF
• Concealed trapway design for cleaner contemporary aesthetic
• Elongated bowl for comfortable seating despite ultra-low-flow specification
• 10-year vitreous china warranty
• CalGreen Premium and ENERGY STAR certifications enable utility rebates
• Long-term water cost savings recoup price premium quickly
• MaP 800g+ performance — comparable to 1.28 GPF alternatives despite lower water
• WaterSense certified beyond minimum requirements

Cons

• 1-year mechanical warranty short relative to china warranty
• Seat sold separately
• Only Glossy White available — no color options
• Niagara brand recognition lower than mainstream alternatives
• Specialty 0.8 GPF specification — may struggle in older 2-inch drain pipe configurations
• May not meet local codes specifying 1.28 GPF or higher in some jurisdictions
• Specialty parts (vs. generic Fluidmaster) for some components

Who Should Buy

• Households prioritizing maximum water conservation in elongated bowl configuration
• Properties in drought-affected regions or with high water costs
• Buyers eligible for CalGreen Premium, ENERGY STAR, or utility water-saving rebates
• Modern bathroom renovations wanting concealed trapway aesthetic + ultra-low-flow engineering
• Long-term ownership where 10-year water cost savings compound
• Properties on private septic systems where reduced water input extends septic life
• Eco-conscious renovations where flush technology is part of sustainability story

Comparison Decisions

• Power One Plus vs. Niagara One ($329-$429): Niagara One is one-piece 1.0 GPF; Power One Plus is two-piece 0.8 GPF concealed trapway. Power One Plus saves more water; Niagara One has cleaner one-piece aesthetic. Pick on water conservation aggressiveness vs. form factor.
• Power One Plus vs. Stealth Original ($249-$329): Stealth uses vacuum-assist 0.8 GPF round-front; Power One Plus uses gravity-flow 0.8 GPF elongated concealed trapway. Pick on form factor and bowl shape preference.
• Power One Plus vs. Stealth Dual-Flush ($279-$369): Stealth Dual-Flush averages ~0.95 GPF with dual-flush flexibility; Power One Plus is single-flush 0.8 GPF for simplicity. Pick on dual-flush preference vs. simpler operation.