How to Get Your Toilet to Flush Automatically: The Ultimate Guide

Getting your toilet to flush automatically can provide added convenience, hygiene, and efficiency in your bathroom. While most modern toilets have a manual flush handle or button, installing an automatic flush can remove the need to touch surfaces in the bathroom. This hands-free experience helps prevent the spread of germs and bacteria.

Automatic flushing uses sensor technology to detect when the toilet has been used and trigger a flush. This ensures the toilet gets flushed every time it is used, unlike manual flushing where flushes may occasionally be forgotten. According to plumbing experts, an automatic flush can save 2-4 gallons of water per person daily.

In this comprehensive guide, we‘ll explore your options for adding automatic flushing capabilities to your existing toilet.

Retrofit Auto-Flush Conversion Kit

One easy option is to install an auto-flush retrofit kit. These kits are designed to convert your existing manual flush toilet into an automatic, sensor-activated toilet.

A retrofit kit includes:

• Motion sensor unit
• Control box
• Power pack
• Flush actuator arm
• Mounting hardware

How the Auto-Flush Retrofit Kit Works

The sensor unit mounts to the wall behind or beside the toilet and uses an infrared beam to detect motion and presence within the bathroom. When the sensor detects that the user has left the vicinity of the toilet, it sends a signal to the control box.

The control box has an adjustable timer that provides a short delay before activating the flush. This prevents premature flushing if the user is simply repositioning themselves.

After the timed delay, the control box sends a signal to the flush actuator arm mounted inside the toilet tank. This arm pulls the flapper chain to open the flush valve and trigger the flush.

Once installed, the auto-flush retrofit kit provides hands-free, automatic flushing. The user no longer needs to operate a manual handle or push button.

Installing an Auto-Flush Retrofit Kit

Installing an auto-flush retrofit kit takes 1-2 hours and requires only basic tools. Here are the step-by-step instructions:

Step 1: Turn Off Water Supply

Shut off the water supply to the toilet by closing the shut-off valve behind the toilet. This is crucial to prevent water damage while you work.

Step 2: Remove Tank Lid

Remove the lid from the toilet tank and place it aside. This will allow you access to the toilet tank internals.

Step 3: Mount Sensor

Mount the motion sensor on the wall behind the toilet. The exact height depends on the specific sensor. Leave space for users between the sensor and toilet.

Step 4: Install Control Box

Mount the control box to the side of the toilet tank or on the nearby wall. Make sure wires will reach.

Step 5: Connect Actuator Arm

Attach the actuator arm to the flapper chain inside the tank. Adjust so arm can pull chain and open flush valve.

Step 6: Connect Wires

Connect all wires between the control box, sensor, and actuator arm according to the manufacturer instructions.

Step 7: Reinstall Tank Lid

Put the tank lid back on, then turn on the water supply. Your auto-flush is now ready to test.

Adjusting Your Auto-Flush Retrofit

After installation, you may need to make some adjustments:

• Adjust sensor angle and range to reliably detect users
• Change flush delay timer so flush occurs after user leaves
• Test at night to ensure sensor does not activate due to ambient light changes

Adjustments ensure your auto-flush kit provides hands-free flushing when needed without any premature or false flushing.

Choosing the Right Auto-Flush Retrofit Kit

Retrofit kits are available for most standard tank-type toilets using gravity or pressurized flushing systems. Make sure to choose the right kit designed specifically for your toilet model.

Look for a reputable brand with high-quality components that are designed to last. Kits with adjustable settings provide more customization. Prices range from $50 to $250.

Hire a professional plumber if you are uncomfortable installing the retrofit kit yourself.

New High-Efficiency Toilet with Built-In Auto-Flush

For a full toilet upgrade, consider purchasing a new high-efficiency toilet that has integrated auto-flush technology.

These toilets have the motion sensors, control box, and flushing mechanism built right in. Units are available from top brands like Toto, Kohler, American Standard, and Niagara.

Benefits of New Auto-Flush Toilet

• No need for retrofitting – sensors and auto-flush are pre-installed
• Uniform look – auto-flush components are discretely built into the toilet
• High-efficiency – uses less water than older models
• Added features – some models include LED nightlights, heated seats, etc.

A new auto-flush toilet ranges from $300 – $600 depending on features. Hiring a plumber to install typically costs $200 – $400.

Make sure to check the toilet‘s rough-in size (distance between the wall and toilet mounting bolts) to ensure compatibility with your existing plumbing.

Adjustable Auto-Flush Valve Retrofit

For a more customizable installation, consider an adjustable auto-flush valve retrofit kit.

These kits allow you to keep your toilet bowl and tank but replace the existing flush valve inside with a new automatic valve.

The adjustable valve gives you control over the flush volume, sensor activation window, and flush pressure.

Adjustable Valve Benefits:

• Keep existing bowl and tank – only replace internal valve
• Adjust sensor range and flush activation window
• Programmable multi-flush options (full and reduced flush)
• Set flush pressure between 20 – 80 PSI

Installing an adjustable valve kit takes 2-3 hours. Adjusting the valve may require replacing additional tank components like the overflow tube. Hiring a professional plumber is recommended. Cost is $100 – $350.

Key Considerations for Auto-Flush Toilets

If you are looking to add auto-flush capabilities to your toilet, keep these tips in mind:

• Carefully read all installation instructions before starting
• Check that your toilet rough-in size and bowl shape is compatible
• Adjust sensor sensitivity to prevent accidental flushes
• Consider outlet location for plug-in electric models
• Have a professional install if you are inexperienced with plumbing

Investing in an auto-flush toilet or retrofit kit can provide convenience, better hygiene, and water savings. Follow directions closely and do not force any components to fit. With the right auto-flush toilet or kit, you‘ll enjoy hands-free flushing for years to come.