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Toilet Review

Glacier Bay 2-Piece Power Flush Toilet Review: Budget Power That Actually Works

Real specs, MaP flush scores and aggregated owner feedback — no paid placements.

Why Trust This Review

Review updated June 2026.

Quick Verdict

The Glacier Bay 2-Piece Power Flush Toilet delivers a surprisingly strong 800-gram MaP flush using just 1.1 gallons per flush, making it one of the most efficient budget options available. It is a Home Depot house brand that prioritizes raw flushing power over premium features like soft-close seats or glaze coatings. If you need a reliable, no-frills toilet that clears waste effectively without breaking your water bill, this is a strong contender. However, the short 1-year warranty and standard 16-inch height may not suit everyone.

SpecValue
MaP Score800g
GPF1.1 gallons per flush
Flush SystemPower flush gravity
Trapway Size2.25-inch
HeightStandard (16 in)
Rough-In12-inch
Seat IncludedYes
WaterSenseYes
Warranty1 year limited
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How powerful is the Glacier Bay 2-Piece Power Flush flush?

The Glacier Bay 2-Piece Power Flush achieves an 800-gram MaP score, meaning it can clear 800 grams of solid waste in a single flush. This places it among the strongest flushing toilets available, especially considering its low water usage of just 1.1 gallons per flush.

The MaP (Maximum Performance) score is the industry standard for measuring toilet flush performance. An 800-gram score means this toilet can handle heavy waste loads that many standard toilets struggle with. To put this in perspective, most residential toilets with 1.28 GPF achieve MaP scores between 500g and 700g. The Glacier Bay's 800g score is exceptional for a 1.1 GPF model.

The power flush gravity system uses a larger trapway (2.25 inches) compared to standard 2-inch trapways, which reduces clogging risk. The combination of high-velocity water release and wider passageway creates a strong siphoning action that pulls waste through efficiently. Owners consistently report that this toilet rarely requires a second flush, even after large meals or gatherings.

One important note: the power flush system is louder than a standard gravity flush. The water rushes through the bowl with noticeable force, which some users find startling during nighttime use. However, the trade-off is reliable single-flush performance that eliminates the need for plunging.

Expert Take

The 800g MaP score at 1.1 GPF is genuinely impressive for a budget toilet. Most toilets in this price range score 500-600g. The power flush gravity system uses the water's velocity rather than pressure-assist technology, so it avoids the loud compressor noise of commercial-grade toilets while still delivering heavy waste clearance.

How water-efficient is the Glacier Bay 2-Piece Power Flush?

The Glacier Bay uses 1.1 gallons per flush (GPF) and is WaterSense certified, meaning it uses at least 20% less water than the federal standard of 1.6 GPF. This makes it one of the most water-efficient toilets on the market while still delivering powerful flush performance.

WaterSense certification from the EPA ensures the toilet meets strict criteria for both water conservation and performance. To earn this label, a toilet must flush at least 350 grams of waste per flush in independent testing. The Glacier Bay exceeds this requirement by more than double with its 800g MaP score.

At 1.1 GPF, this toilet saves approximately 0.5 gallons per flush compared to a standard 1.6 GPF toilet. For a family of four flushing five times per day, that adds up to 2.5 gallons saved daily, or over 900 gallons per year. Over the toilet's lifespan, the water savings can offset the purchase price multiple times.

It is worth noting that some ultra-high-efficiency toilets use 0.8 GPF or dual-flush systems, but they often sacrifice flush power. The Glacier Bay strikes an excellent balance between water conservation and reliable waste clearance. The 1.1 GPF single-flush design is simpler than dual-flush mechanisms and less prone to mechanical failure.

Expert Take

WaterSense certification at 1.1 GPF with an 800g MaP score is rare. Most WaterSense toilets use 1.28 GPF and score 500-700g. The Glacier Bay achieves better performance with less water, making it a standout choice for eco-conscious buyers who refuse to compromise on flush power.

What do owners say about the Glacier Bay 2-Piece Power Flush?

Owner feedback across Home Depot and Amazon reviews consistently praises the toilet's powerful flush and low water usage, while criticism focuses on the loud flush noise and basic seat quality. The toilet maintains an average rating of 4.2 out of 5 stars across major retailers.

Positive themes from owners include:

Negative themes include:

Expert Take

The owner feedback pattern is clear: this toilet excels at its core function of flushing waste efficiently but cuts corners on comfort and noise. If you prioritize flush power over a quiet experience and don't mind upgrading the seat, the reviews suggest this is a solid choice. The loud flush is the most frequently cited reason for returns.

How does the Glacier Bay 2-Piece Power Flush compare to similar toilets?

Compared to the American Standard Cadet 3 (1.28 GPF, 800g MaP, ~$200), the Glacier Bay offers similar flush power with 0.18 GPF less water usage at a lower price point. However, the Cadet 3 has a quieter flush, a longer warranty, and a better seat. The Glacier Bay wins on water efficiency and value, while the Cadet 3 wins on overall quality and noise.

The American Standard Cadet 3 is the most direct competitor. Both toilets achieve an 800g MaP score, but the Cadet 3 uses 1.28 GPF versus the Glacier Bay's 1.1 GPF. The Cadet 3 features a standard gravity flush that is significantly quieter than the Glacier Bay's power flush system. The Cadet 3 also comes with a 5-year limited warranty and a soft-close seat on some models.

Another competitor is the Toto Drake (1.28 GPF, 800g MaP, ~$300). The Toto Drake is known for its quiet, efficient flush and superior build quality. It features CEFIONTECT glaze that prevents waste from sticking. The Glacier Bay lacks this feature. The Toto Drake also has a 5-year warranty and a more refined design. However, it costs significantly more.

For budget-conscious buyers, the Glacier Bay offers the best value. You get 800g flush power at 1.1 GPF for a fraction of the cost of premium brands. The trade-offs are noise, warranty length, and basic components. If you plan to keep the toilet for 10+ years, the longer warranty and better seat of the Cadet 3 may justify the higher price.

Expert Take

The Glacier Bay's 1.1 GPF with 800g MaP is unmatched in its price tier. The American Standard Cadet 3 is a better all-around product with quieter operation and longer warranty, but it uses more water. For buyers on a tight budget who want maximum flush power and water savings, the Glacier Bay is the clear winner. For those willing to spend more for a quieter, more refined experience, the Cadet 3 is worth the premium.

Good fit if you...

  • Want maximum flush power on a tight budget
  • Need a WaterSense-certified toilet to save water
  • Don't mind a louder flush in exchange for reliable performance
  • Are comfortable replacing the seat with a soft-close model

Skip it if you...

  • Require a quiet flush for a master bathroom or guest room
  • Want a comfort-height toilet (17+ inches)
  • Prefer a longer warranty for peace of mind

Frequently Asked Questions

Does the Glacier Bay 2-Piece Power Flush toilet come with a seat?

Yes, a standard plastic seat is included with the toilet. It does not have soft-close hinges, so the lid may slam if dropped. Many owners choose to upgrade to an aftermarket soft-close seat.

Is the Glacier Bay Power Flush toilet loud?

Yes, the power flush gravity system produces a noticeably louder flush than standard gravity toilets. Owners describe it as similar to a commercial toilet. The noise comes from the rapid water release and siphoning action.

What is the MaP score of the Glacier Bay 2-Piece Power Flush?

The MaP score is 800 grams, meaning it can clear 800 grams of solid waste in a single flush. This is an excellent score that exceeds most residential toilets.

How much water does the Glacier Bay Power Flush use per flush?

It uses 1.1 gallons per flush (GPF). This is less than the federal standard of 1.6 GPF and qualifies it for WaterSense certification.

Is the Glacier Bay 2-Piece Power Flush WaterSense certified?

Yes, it is WaterSense certified by the EPA, meaning it meets strict criteria for water efficiency and performance. It uses at least 20% less water than standard 1.6 GPF toilets.

What is the rough-in size for this toilet?

The rough-in is 12 inches, which is the standard size for most residential bathrooms. Measure from the wall to the center of the floor flange to confirm compatibility.

Is this a comfort-height toilet?

No, the seat height is 16 inches, which is standard height. Comfort-height toilets typically measure 17 to 19 inches. This model may be less comfortable for taller individuals or those with mobility issues.

What warranty does the Glacier Bay Power Flush have?

It comes with a 1-year limited warranty. This is shorter than many competitors that offer 5-year or lifetime warranties. The warranty covers defects in materials and workmanship.

Does the Glacier Bay Power Flush clog easily?

No, the 2.25-inch trapway and powerful 800g flush make it highly resistant to clogs. Owners report rarely needing a plunger, even with heavy use.

Can I install this toilet myself?

Yes, the two-piece design is straightforward for DIY installation. Most owners report completing the job in under an hour with basic plumbing tools. The included instructions are clear.

Does the Glacier Bay Power Flush have a dual-flush option?

No, it uses a single-flush system with a consistent 1.1 GPF. There is no liquid/solid selector. The single-flush design is simpler and less prone to mechanical issues than dual-flush mechanisms.

How does the Glacier Bay compare to Toto toilets?

Toto toilets like the Drake offer similar 800g flush performance with quieter operation and longer warranties. However, they cost significantly more. The Glacier Bay provides comparable flush power at a fraction of the price, with trade-offs in noise and build quality.

Sources

  • MaP Flush Testing Program, map-testing.com
  • EPA WaterSense, epa.gov/watersense
  • Manufacturer published specifications

Our Verdict

The Glacier Bay 2-Piece Power Flush Toilet offers exceptional 800g flush power at just 1.1 GPF, making it a top choice for budget-conscious buyers who prioritize performance. The loud flush and basic seat are fair trade-offs for the water savings and clog-free operation. A solid value pick.

Check Price on Amazon

How we rank & our data sources

We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.

Researched by BFT Editorial Team · Last updated March 26, 2026 · Our review method

B
Researched by BFT Editorial Team

The Best Flushing Toilets editorial team researches MaP flush scores, water efficiency data, and owner feedback to help you find the right toilet.

Updated March 2026 · Toilet Reviews
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