Water Leak Detection for Commercial Properties (2026)

Water leak detection is a system of sensors and alerting software that identifies water where it shouldn't be and notifies your team before it spreads. In a commercial building, that early warning separates a maintenance ticket from an insurance claim. The Hartford, analyzing more than 1 million small-business property and liability policies, found water and freezing damage averaged $34,600 per claim between 2020 and 2024, roughly double the $15,400 average for homeowners claims over a comparable period, per the Insurance Information Institute.

The problem is that most water damage stays hidden until it's already expensive. For example, a supply line fitting behind a wall or a hose connection under a laundry unit can leak for hours before anyone sees a stain. Leak sensors close that gap because they sit exactly where water first appears.

Across a portfolio, SmartHQ™ Management runs on a repeatable loop:

• Sensors catch water at the source
• Alerts route to the right person in real time
• Each alert becomes an assigned task
• Every property stays visible on one dashboard

Water damage hits a commercial property on three fronts. First, the insurance claim, then the operational cost of the repair, then the revenue lost while the space sits unusable. The claim is just the part you can see, and filing one can affect renewal terms for years.

Start with the operational side. Once water gets into a commercial building, four things follow:

• Asset deterioration: Structures, fixtures, and building assets degrade or fail outright once saturated
• Business disruption: The affected area shuts down while drying and repairs run their course
• Mold growth: The EPA recommends drying wet materials within 24–48 hours to help prevent mold growth. Once mold appears, air quality testing and remediation join the repair bill.
• Structural compromise: Sustained exposure weakens framing and the building envelope

Then there’s the revenue side. In an occupied building, lost revenue piles onto the repair bill.

• Hotels: A leak in a fourth-floor guest bathroom runs down through the third and second floors. Now three rooms are out of inventory instead of one
• Multifamily: The same event displaces residents and triggers rent concessions during their absence
• Senior living: Relocation involves care and mobility planning on top of the room logistics

A water leak detection system includes sensors placed where water first appears, a gateway that connects them to the building network, and monitoring software that routes the alert to your team. When a sensor triggers, the alert reaches you in real time via an app, email, or dashboard, depending on how the platform is set up.

Leak detection and leak mitigation are two separate capabilities that vendors frequently sell together:

• Detection: Sensing and alerting. The system tells you water is present and where it is
• Mitigation: Physical response, usually an automatic shutoff valve closing the supply line once water appears

A property can run detection or mitigation on its own, or pair them together.

1. Point sensors

A point sensor is a small, wireless device that triggers when water comes into contact with it. You place them where leaks are most likely to start, which is why placement matters more than sensor count.

Standard placement zones:

• Under sinks and vanity cabinets
• Beside water heaters and mechanical equipment
• At appliance supply connections
• In basements and below-grade spaces

Each sensor pairs to a gateway, which connects to the monitoring platform over the building network. GE Appliances sells the hardware as SmartHQ™ Leak Detect Kits in two configurations: a single sensor with a gateway, or a three-sensor kit with a gateway, depending on how many risk zones a property needs to cover.

2. Alerting and escalation

A sensor is only as useful as what happens after it triggers. SmartHQ™ Management handles that in two stages:

• Notification: Each user sets their own preferences, such as email, push, or both, so a facilities lead gets every alert, and a regional manager only sees what needs escalating.
• Assignment: The manager turns the alert into a task with a named owner, a priority, a due date, and a notes field for anything a guest or resident reported.

That leaves a record of who responded and when, which matters when an insurer or an owner asks.

3. Automatic and remote shutoff

Shutoff hardware automatically closes the water supply when a leak is detected. Two GE Appliances products pair detection with shutoff:

• GE Profile™ GEOSPRING™ Smart Hybrid Heat Pump Water Heater: Ships with wireless leak detection and automatic water shutoff built in. The included sensor triggers the shutoff, and alerts reach you through the app.
• GE Profile Smart Valves: Sits at the point of entry and adds leak detection with remote water shutoff for the whole supply line, managed from the app (models PXWH70Y and PXWH80Y).

**Both are purchased separately and are not included in the SmartHQ™ Leak Detect Kit.

Plumbing issues:

• Supply line fittings, valves, and joints sit inside walls and above ceilings, which delays discovery until water reaches a visible surface.
• Bathrooms and mechanical rooms carry the most risk. They pack the highest number of fittings into the smallest space.

Foundations and subterranean spaces:

• Slab cracks and below-grade walls let groundwater and stormwater in.
• Basements and parking levels flood from the outside in, so sensors go at floor level along exterior walls, not beside equipment.

Appliance connections:

• Laundry equipment, dishwashers, ice makers, and water heaters each carry a hose or fitting that can fail without warning.
• HVAC condensate pans belong on this list, too. One blocked drain sends water straight into the ceiling below.

The leak workflow runs in four steps:

• Pair: Gateways pair to a SmartHQ™ Management account through the mobile app.
• Detect: Water reaches the sensor probes, triggering a leak event.
• Notify: The alert goes out by email, push, or both, based on each user’s settings.
• Assign: The manager turns the alert into a task, tagged to property, building, floor, and room, with an owner, a priority, and a due date.

Commercial terms:

• Leak monitoring: Free. Pair as many sensors and gateways to an account as the property needs.
• Hardware: The only cost for leak protection
• Leak Tier: Properties can also register for leak monitoring alone, without an appliance subscription.
• Appliance monitoring subscription: Each pack covers 25 units or rooms, and each unit can commission up to 10 appliances or gateways.