MaP Score & Boost Pumps: Decoding Smart Toilet Flush Power

There is no worse “luxury” experience than spending $1,500 on a new smart toilet, only to find that you have to flush it twice.

This is the hidden nightmare of the sleek, tankless smart toilet revolution. Many of these modern designs are “tankless,” meaning they rely entirely on your home’s existing water pressure to create a strong flush. If your plumbing is old, or your municipal pressure is low, your new high-tech marvel will be a low-performance disappointment.

This single issue has sparked a “Gen 2” evolution in smart toilet design, moving away from simple comfort and focusing on guaranteed core performance. The two key terms you need to know are MaP Score and Boost Pump.

Decoding Flush Power: What is a MaP Score?

For years, consumers had no way to objectively compare one toilet’s flush power to another. “Powerful,” “Siphon Jet,” and “Vortex” were all just marketing terms.

That changed with MaP (Maximum Performance) testing.

MaP testing is an independent, scientific, and standardized measure of a toilet’s ability to remove solid waste in a single flush. The test uses soybean paste (a proxy for waste) and measures the maximum “grams” a toilet can completely clear from the bowl.

A higher MaP score is, unequivocally, a more powerful flush.

MaP Score Benchmarks: Why 1000g is the New Standard

Understanding the scores is simple. * 350g - 500g: A “passable” flush. This is the bare minimum and what you’ll find on many older or weaker toilets. * 600g - 800g: A “good” to “great” flush. Most new, quality toilets land in this range. * 1000g+: An “elite” flush. This is the highest category. A toilet with a 1000-gram MaP score is certified to remove over 2.2 pounds of waste in a single flush.

When you see a “Gen 2” smart toilet, like the Hawkrown ST-PRO, advertising a 1000 Gram MaP Flushing Score, it is not a marketing claim. It is a verifiable, data-backed promise of elite flushing performance.

The “Gen 2” Solution: How “Pump-Assisted” Toilets Guarantee a Flush

So, how do these new models achieve a 1000g score, even in low-pressure homes? They stop relying on your home’s pressure entirely.

The solution is the Built-in Tank with a Boost Pump.

This “hybrid” design combines the best of all worlds:
1. It Has a Tank: Like a traditional toilet, it has a small, concealed tank that stores a set amount of water. This ensures it always has the right amount of water (e.g., 1.6 or 1.1 GPF) for a full flush.
2. It Has a Pump: When you flush, this electric “boost pump” (or “pump-assisted” system) activates, ejecting that stored water at a high, engineered velocity.

This system decouples the flush from your home’s plumbing. It doesn’t matter if your home’s pressure is high or low. The flush will be a powerful, 1000g-capable flush every single time. This is the ultimate solution for “flush anxiety” and the defining feature of a “Gen 2” performance toilet.

Conclusion: A Shopper’s Guide

When you are shopping for a smart toilet, it is easy to be distracted by the “Gen 1” comfort features like a heated seat or a nightlight. But these features are worthless if the core function—flushing—is a failure.

Before you look at any other feature, ask:
1. What is the MaP Score? (Look for 800g or higher).
2. Does it have a Boost Pump or “pump-assisted” flush? (This is a must-have for low-pressure homes).

By prioritizing these “Gen 2” core performance features, you ensure that your new smart toilet is not just a comfortable appliance, but a powerful and reliable one.