Short answer: Sensor faucet maintenance mostly comes down to four things: wiping the sensor window regularly, watching the low-battery LED, checking that water pressure stays within range, and knowing when an issue is beyond a quick fix and needs a plumber. Routine upkeep is mostly a wipe-down and a quick look, so it fits into an existing cleaning round.
A sensor faucet swaps the handle for a sensor and a power source, and those two parts benefit from a short routine check rather than being ignored until something stops working. This checklist covers what to look at and how often. For a faucet that is already acting up, see our troubleshooting guide.
The specs below are for the AquaSense Elite sensor faucet. If you maintain a different model, check its own product page for battery life and pressure range.
Weekly Checks
A quick weekly check takes less than a minute per faucet and catches most issues before they become a complaint. Look for:
- Response time: Does the faucet turn on and off within about half a second of hands moving in and out of range (the listed time delay is 0.5 seconds), or does it feel slower than usual?
- The low-battery LED: A quick glance tells you whether a battery swap needs to go on this week's task list.
- Visible buildup: Mineral deposits or grime around the spout or sensor window, especially in areas with hard water.
- Water flow: A noticeably weak or inconsistent stream compared to neighboring sinks, which can point to a pressure or line issue worth tracking.
In a high-traffic commercial restroom, fold this into an existing daily or weekly cleaning round rather than treating it as a separate task.
Cleaning the Sensor Window
The sensor window is the small window on the faucet where the infrared sensor sits, and it's the one part of the faucet that directly affects performance if it gets dirty or scratched. The product page lists the sensor components as waterproof, so cleaning it is straightforward and doesn't require powering anything down first. If you want to understand what the sensor is doing, see how touchless faucets work.
Wipe the sensor window with a soft, damp cloth rather than an abrasive pad or scouring sponge. An abrasive cleaner can scratch the surface over time, and a scratched sensor window may interfere with how the sensor reads, which can show up as a faucet that triggers inconsistently or not at all. Avoid harsh chemical cleaners directly on the sensor window for the same reason, mild soap and water is a common starting point, and the manufacturer's care instructions should be checked for anything stronger. If your faucet is one of the special-order colors, see our guide to faucet finishes for hotel and restaurant restrooms and ask us about care for that finish.
How often this needs doing depends on the restroom: daily for a high-traffic commercial sink, weekly for a lower-traffic one. If a faucet starts responding inconsistently, check the sensor window for buildup before assuming it's a deeper issue.
One more clue: if water runs with nobody there and stops by itself after about a minute, that is the faucet's 60-second auto shut-off at work. Look for something in front of the sensor, such as a wet cloth or sponge left near the spout, and check that the sensor window is clean.
Battery Planning
Average battery life on the AquaSense Elite is listed as around 2 years, though high-traffic commercial sinks will likely land on the shorter end of that range simply because the sensor triggers more often throughout the day. The product page lists alkaline AA batteries and says they are not included with the faucet. The built-in low-battery LED indicator is the main signal to watch for, rather than waiting for the faucet to stop responding entirely.
If your faucet runs on the optional AC adapter (110–240V) instead, there are no batteries to swap and this section doesn't apply. Our post on whether touchless faucets need electricity compares the two power options.
For a facility managing multiple units, it's worth keeping a small stock of spare batteries on hand rather than ordering reactively each time one faucet signals low, especially for restrooms where a non-working sink creates an immediate complaint. The battery replacement steps are in the install guide, so we don't repeat them here. If your team needs a copy, contact us.
Staggering battery checks across a maintenance schedule, rather than reacting one faucet at a time, keeps a multi-restroom property running predictably. A simple log of the date each battery was changed makes the next swap easy to plan.
When to Check Water Pressure
The AquaSense Elite is listed for an operating water pressure range of 7 to 110 psi. If a faucet's flow feels noticeably weaker than usual, or weaker than other sinks on the same supply line, water pressure is one of the first things worth checking, since the sensor and valve control when water flows, but the strength of the flow also depends on the supply pressure.
If pressure at the fixture is outside that range, or if the issue affects multiple sinks on the same line rather than just one faucet, that points toward a building supply issue rather than something specific to the faucet itself. That distinction matters for deciding who handles the fix, which is covered next.
When to Call a Plumber
Most routine sensor faucet maintenance, cleaning the sensor window and swapping batteries, doesn't require a plumber. A few situations do call for one:
- Water pressure at the fixture falls outside the faucet's rated range after confirming it's not a battery or sensor issue.
- Leaks at the supply line connections or under-sink fittings, rather than anything related to the sensor or valve.
- Multiple faucets on the same line showing the same flow or pressure issue at once, which usually points to the building's plumbing rather than the fixtures themselves.
If you've already cleaned the sensor window, confirmed the battery isn't low, and the problem persists, or if the symptoms point to plumbing rather than the faucet itself, that's the point to bring in a plumber rather than continuing to troubleshoot the fixture. The product page describes the under-sink valve and other parts as easy to reach when maintenance is needed, which helps if a plumber has to look at them. For faucet-specific issues that aren't clearly a plumbing problem, our step-by-step troubleshooting guide covers the common fixes.
Maintenance Schedule at a Glance
| When | What to do | What it catches |
|---|---|---|
| Daily (busy restrooms) | Wipe the sensor window with a soft, damp cloth | Buildup that makes the faucet respond inconsistently |
| Weekly | Check response time, low-battery LED, spout buildup, and flow | Small problems before they become complaints |
| Every battery change | Write down the date | Makes the next swap easy to plan |
| When flow is weak | Compare with neighboring sinks and check pressure against the 7–110 psi range | Faucet issue vs building supply issue |
| When it leaks or several sinks fail | Call a plumber | Supply line, fitting, or building plumbing problems |
FAQ
How often should a commercial sensor faucet be cleaned?
The sensor window is worth wiping as often as the restroom's general cleaning schedule allows, daily for high-traffic sinks, weekly for lower-traffic ones. Use a soft, damp cloth rather than an abrasive pad.
How do I know when to replace the battery?
The AquaSense Elite has a low-battery LED indicator, so there's no need to guess. Average battery life is listed as around 2 years, shorter in high-traffic restrooms, so it's worth checking the indicator on a regular schedule rather than waiting for the faucet to stop responding.
What water pressure does the AquaSense Elite need to operate correctly?
It's listed for an operating pressure range of 7 to 110 psi. Flow issues outside that range, or affecting multiple fixtures at once, usually point to a building supply issue rather than the faucet.
Can I clean the sensor without turning off the water or power?
Yes. The sensor components are listed as waterproof, so wiping the sensor window with a damp cloth doesn't require shutting anything off first.
What should I use to clean the sensor window?
A soft, damp cloth is the safe starting point, with mild soap and water if needed. Avoid abrasive pads and harsh chemical cleaners, and check the manufacturer's care instructions before using anything stronger.
Why does the water stop on its own after about a minute?
That is the faucet's 60-second auto shut-off. If the water was running without anyone there, check for something in front of the sensor and clean the sensor window.
Install Guide and Replacement Parts
If your team needs the install guide or has questions about replacement parts for the AquaSense Elite, contact us directly and we'll help you plan your maintenance schedule. Batteries aren't included with the faucet, so plan to buy AA alkaline spares separately.
You can also browse our sensor faucets collection read our guide to choosing a commercial restroom faucet, or see whether touchless faucets are worth it for your property.