Where the power comes from is the whole question
A touchless faucet is a small electrical appliance sitting on a water supply, and the specification that decides everything is where its power comes from. Battery models — usually four AA cells or a 6 V lithium pack — install like an ordinary faucet and need the cells changed; AC power models need an outlet under the sink, which most bathrooms do not have. Makers state a battery life in cycles or months, and that figure assumes a usage pattern you should read rather than trust. Then come the behaviors: sensing range, which decides whether the faucet runs every time someone reaches for the soap, and run-on time, the seconds it keeps flowing after you move away. Many have no mixing at all — one temperature, set at the valves below. We compare power source and stated battery life, sensing range, run-on time, whether temperature is adjustable, and faucet hole diameter.
Single hole · 110 V AC or 4 AA batteries · 15 cm (5.9 in) sensing distance · 60–90 s run · 300,000-cycle solenoid · temperature mixer · zinc alloy
The cheapest touchless faucet here, and the one that publishes how it senses: 15 cm range, a 60 to 90 second run, a 300,000-cycle solenoid, and plug or battery power.
Best for: A powder room or utility sink on a budget, with an outlet in the vanity
≈ $46
1 or 3 holes, deck plate included · 110 V AC or 4 AA batteries · mixing valve and hot and cold hoses · brass · 3.5 in spout · chrome
A brass touchless faucet for 1 or 3 holes that runs on 110 V or four AA batteries, with a mixing valve and both supply hoses in the box.
Best for: A 3-hole bathroom sink being converted to touchless, with or without an outlet
≈ $70
Single hole, deck plate included · 4 AA batteries, 6–8 months stated · under-sink mixing valve · 1.2 gpm · stainless steel and brass · chrome
A battery-powered touchless bathroom faucet that states its battery life — six to eight months on four AA cells — with an under-sink mixing valve and 1.2 gpm.
Best for: A home bathroom with no outlet under the sink, where a stated battery life matters
≈ $120
The published power source decides what feeds the electronics: cells, AC power or a turbine.
The published sensing range decides the distance at which the sensor reacts.
An infrared sensor operates a solenoid valve. The published specifications describe range and run-on.
It is a manufacturer figure tied to a published cycle count. It depends on real use.
Published temperature adjustment says so. Some models have a single water supply.
The delay during which water keeps flowing after the hands are withdrawn. It is published.
That depends on the model. The published sensing range is the manufacturer's.
The published faucet hole diameter decides mechanical compatibility. This site describes no installation.
The published power source says so. Not all of them require one.
This site publishes the power source and stated battery life. It describes no fallback behavior.
Power source and stated battery life decide the upkeep, sensing range decides the comfort, and run-on time decides the water that leaves after every use.
The table keeps only the dimensions given by four products in five. Below that threshold, a column measures missing data rather than the product.
| Model | Price | Power source | Temperature adjustment |
|---|---|---|---|
| Greenspring Touchless Bathroom Faucet | $46 | 110 V AC plug or 4 AA batteries, not included — stated | Temperature mixer supplied, set under the sink — stated |
| Yodel Faucet YDTF-1 | $70 | 110 V AC or 4 AA batteries — stated | Mixing valve included, with hot and cold hoses — stated |
| Charmingwater CW-2103-C | $120 | 4 AA batteries in a control box, not included — stated; no mains option | A mixing valve under the sink, set once — stated |
Specifications: manufacturer sheets for bathroom fittings and the matching Amazon product pages. Prices and availability: Keepa. Every figure in this table names its source.
Most recent revision in this category: October 29, 2026.
Prices quoted in these summaries are dated readings. The live price is shown next to each product.
