Pressure-assisted toilets are an advanced solution for those seeking powerful flushing performance and water efficiency. By using compressed air to forcefully expel waste, these toilets stand out for their efficiency but come with some trade-offs.
Here’s a breakdown of their advantages, disadvantages, and a look at one of the best models available.
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Pressure-Assisted Toilets: What Are They?
A pressure-assisted toilet is a toilet with a secondary tank that resides inside your main toilet tank. This is known as a pressure vessel. It holds compressed air that mixes with incoming water directly from the supply line to generate a powerful flush.
Difference Between Gravity-Flush and Pressure-Assisted Toilets
If you are wondering how a pressure-assisted toilet differs from a gravity-flush toilet, the answer is that pressure-assisted toilets contain a minor modification that isn’t noticeable from the outside. You have to remove the tank lid to see the difference between the two.
Gravity-flush toilets depend heavily on gravity to remove all the water from the tank and put it in the bowl when flushing the toilet. For this to happen, water must move quickly from the tank to the bowl.
Suddenly dumping volumes of water in the toilet bowl is what generates a siphon effect in the toilet trap. This is the reason why modern toilets contain a wider flush valve, as it quickly moves water from the tank to the bowl while using less water.
Pressure-assisted toilets are more efficient at getting rid of solid waste than gravity-flush models. Pressurized water generates a stronger siphon, which allows waste to move through the trap more forcefully. This means you won’t need to flush twice to get rid of waste, nor will you have to deal with a clogged toilet.
The downside is that pressure-assisted toilets cost more than gravity-flush ones. While there are some gravity-flush toilets that cost more, they generally have more features.
The Pros of a Pressure-Assisted Toilet
There are several pros of pressure-assisted toilets, including:
- Powerful flush. Most people dislike the need to flush twice when using the bathroom. This type of toilet solves that issue.
- Clogs less. With this toilet, plungers are needed less often. They are significantly better than any other toilet type at flushing solid waste. Pressurized water forces waste through the trap and is removed through the drainpipe each time.
- Water-efficient. While you may expect these toilets to use more water because of the water being forcefully pushed through the system, they are surprisingly water-efficient. These toilets utilize 1.1-1.2 gallons per flush, compared to 1.28-1.6 gallons per flush for gravity-assisted toilets.
- Tank doesn’t sweat. Condensation forms on toilet tanks in rooms with high humidity. This is caused by temperature differences between the inside of your tank and the surrounding environment. The double-tank system in pressure-assisted toilets keeps the tank insulated and eliminates toilet sweat.
- Stays cleaner. Since the system delivers a great deal of pressure, the water level is higher than in other toilets. Waste doesn’t stick to the toilet bowl surface, which means the bowl will stay cleaner longer.
The Cons of a Pressure-Assisted Toilet
While the pros of a pressure-assisted toilet seem delightful, there are some drawbacks to this type of toilet, such as:
- Loud flush. Pressurized toilets are similar in sound to those on an airplane. As the water forcefully leaves the pressure vessel, a forceful flush is generated and there is a loud flushing noise. After a while, most homeowners become accustomed to the noise.
- Difficult to Get Replacement Parts. It is easier to find replacement parts for ordinary toilets than for pressure-assisted ones. Since these toilets are not that common, stores don’t typically have replacement parts in stock.
- Higher Cost. Compared to gravity-flush toilets, pressure-assisted toilets cost more. This is because manufacturers need to outsource pressure vessels from third parties.
How They Work
Pressure-assisted toilets work by allowing a pressure valve to draw in air directly to the pressure vessel. The inflowing water from the supply line is then forced into the pressure vessel. When the toilet is flushed, compressed air forcefully pushes water directly into the toilet bowl. Strong suction/siphon action is generated in the toilet trap, which flushes the toilet.
After waste is removed, the pressure vessel sucks in additional water and air for the next flush.
Our Recommendation for the Best Pressure-Assisted Toilet
American Standard 2462016.020 Cadet Two Piece Toilet
The American Standard 2462016.020 Cadet Two-Piece Toilet is a standout option in the pressure-assisted toilet category, combining powerful performance with a sleek design. Here’s a closer look at why it earns the title of the best pressure-assisted toilet.
Key Features
1. Exceptional Flushing Power
This model uses pressure-assisted technology to deliver a forceful and efficient flush. It effectively clears waste in a single flush, reducing the risk of clogs and keeping the bowl clean.
2. Water Efficiency
The Cadet meets WaterSense certification standards, using only 1.6 gallons per flush (GPF). This makes it an environmentally friendly and cost-effective option for households aiming to conserve water.
3. Durable Design
Constructed with high-quality vitreous china, this toilet is built to withstand heavy use. The tank and bowl are designed for durability, ensuring long-term reliability.
4. Comfortable and Accessible
The elongated bowl provides added comfort, and the chair-height seating meets ADA compliance, making it ideal for users with mobility concerns.
5. Easy Installation
As a two-piece toilet, the Cadet is straightforward to install, with clear instructions and compatibility with standard plumbing setups.
Pros
- Powerful and Reliable Flush: Clears waste efficiently, even in high-use scenarios.
- Water-Saving Design: Uses less water without compromising performance.
- Comfortable for All Users: ADA-compliant height and elongated bowl for extra comfort.
- Durable Construction: Built to last with high-quality materials.
Cons
- Noise: Like most pressure-assisted toilets, the flush can be loud, which might not be ideal for some users.
- Basic Aesthetic: The design prioritizes function over style, with a simple, utilitarian look.
- Higher Cost: While competitively priced for its category, it is more expensive than standard gravity-fed toilets.
Why It’s the Best
The American Standard 2462016.020 Cadet Two-Piece Toilet strikes a balance between performance, comfort, and efficiency. Its powerful flushing system ensures reliability, while its water-saving features and ADA-compliant design make it versatile for both residential and commercial use.
Final Verdict
If you’re looking for a dependable pressure-assisted toilet that delivers excellent performance and long-term value, the American Standard Cadet is an excellent choice. While it may not be the quietest option, its flushing power and water efficiency outweigh the minor drawbacks.
Types of Pressure-Assisted Toilets
While we have already discussed common pressure-assisted toilets, there are ones that differ slightly. When low-flow toilets were created to conserve water, manufacturers were faced with the challenge of designing a toilet that flushed strongly with a single flush and wouldn’t clog.
They discovered it was possible to do this only with a toilet that held 3.5 gallons per flush as opposed to 1.6 gallons or less. To compensate, they created toilets with ¾” flush valves and an extra-large trap way.
Tankless Toilet
A tankless toilet is a toilet without a tank. If you are wondering how it flushes, the tank is a reservoir that supplies the bowl with the water needed to flush the toilet each time. The tank is found at the top of the bowl to allow water to gain force as it goes down.
Tankless toilets contain a small pump supplying the bowl with high-pressure water that will sufficiently flush the contents. This eliminates the need for a tank. Tanks are generally installed because most houses don’t have enough water pressure to adequately flush a tankless toilet.
Upflush Toilet
Upflush toilets are installed below grade, or far from your sewer lines. They pump solid waste horizontally and vertically, making them ideal for basement bathrooms. They afford the opportunity of adding extra bathroom fixtures as well.
These toilets have a macerator at the rear. This contains blades rotating at high speeds to break down waste into a slurry before pumping it out.
Rear-Discharge Toilet
Rear-discharge toilets get rid of water from the back and through the bathroom wall. They are best for bathrooms that are far away from sewer lines and without floor drainage systems.
The issue with this type of toilet is that the gravity flush system may not be sufficient since the toilet trap is shorter. The siphoning effect of this model isn’t as strong, thereby generating a weaker flush.
Pressure-Assisted Toilets Installation Tips
Pressure-assisted toilets are a popular choice for their powerful flush and water efficiency. However, installing one can be more complex than a standard gravity-fed toilet. This guide provides essential tips to ensure a smooth installation process and optimal performance.
1. Understand the Mechanism
Pressure-assisted toilets rely on compressed air to deliver a strong, efficient flush. Familiarize yourself with the system’s components, including the pressure tank inside the toilet tank, to avoid accidental damage during installation.
2. Prepare the Space
a. Check Plumbing Compatibility
Ensure your existing plumbing is compatible with a pressure-assisted toilet. These toilets work best with water supply lines that maintain consistent pressure (typically 20–80 PSI).
b. Measure the Area
Verify the rough-in distance (distance from the wall to the toilet’s waste outlet). Pressure-assisted toilets are available in standard rough-in sizes (10, 12, or 14 inches).
3. Gather the Right Tools
You’ll need the following:
- Adjustable wrench
- Screwdriver
- Wax ring or rubber gasket
- Level
- Plumber’s tape
- Bucket and sponge for water cleanup
4. Install the Bowl and Tank
a. Position the Bowl
- Place a new wax ring on the toilet flange.
- Carefully lower the toilet bowl onto the flange, ensuring it aligns with the bolts.
- Tighten the nuts evenly to secure the bowl. Avoid overtightening, as it may crack the porcelain.
b. Attach the Tank
- Position the pressure tank inside the toilet tank, following manufacturer instructions.
- Attach the tank to the bowl using the provided bolts and rubber gaskets to prevent leaks.
- Tighten the bolts gradually and evenly to maintain balance.
5. Connect the Water Supply
- Attach the water supply line to the tank’s inlet valve.
- Use plumber’s tape on the threaded connections to ensure a tight seal.
- Turn on the water supply slowly, checking for leaks.
6. Test the Flush Mechanism
Once installed, flush the toilet multiple times to confirm the pressure-assist system is functioning properly. Listen for any unusual noises or signs of leaks.
7. Secure and Level the Toilet
Use a level to ensure the toilet sits evenly. Tighten the floor bolts if necessary, but avoid overtightening, which could damage the base.
8. Address Common Challenges
a. Water Hammer Noise
Pressure-assisted toilets can cause water hammer in some plumbing systems. Installing a water hammer arrestor may reduce this issue.
b. Tight Space Adjustments
If working in a small bathroom, consider a two-piece pressure-assisted toilet for easier handling during installation.
9. Regular Maintenance Tips
- Periodically inspect the pressure tank for wear or leaks.
- Clean the flush valve and supply line to prevent mineral buildup.
- Test the flush performance to ensure consistent operation.
Installing a pressure-assisted toilet can seem daunting, but with the right preparation and tools, it becomes a manageable task. By following these tips, you can enjoy the efficiency and power of your new toilet for years to come.
Frequently Asked Questions
Are pressurized toilets worth it?
Yes, pressurized toilets are worth it if you need powerful flushing, water efficiency, and clog prevention, making them ideal for high-traffic or commercial spaces. However, they can be noisier and more expensive than standard toilets.
What is better, gravity or pressure-assisted toilets?
Gravity toilets are quieter, more affordable, and easier to maintain, making them ideal for residential use. Pressure-assisted toilets offer a stronger flush and better clog prevention, making them better for high-traffic or commercial spaces. The choice depends on your needs and preferences.
Do pressure-assist toilets clog?
Pressure-assist toilets are less likely to clog compared to gravity toilets due to their powerful flushing mechanism. However, clogs can still occur if inappropriate items are flushed.
Conclusion
Pressure-assisted toilets offer unmatched flushing power and water efficiency, making them an excellent choice for heavy-duty or high-traffic use. However, their noise level, cost, and maintenance requirements may not suit everyone.
If you’re looking for the best model, the American Standard 2462016.020 Cadet Two Piece Toilet is a top contender, delivering exceptional performance with a trusted brand reputation. Choose wisely based on your needs and priorities!