Guides
IoT sensors and commercial property insurance
How water, freeze, fire and equipment sensors fit with commercial property insurance, what carriers offer for them, and how they help underwriting and claims.
IoT sensors are small connected devices that detect water leaks, freezing temperatures, smoke or heat, equipment faults and power loss, and send an alert before a small problem becomes a claim. Some commercial property insurers distribute or credit them, but there is no standard discount: any benefit depends on the carrier, your state, the building and the device. The strongest reason to install them is the loss you avoid, not the premium credit.
What sensors do and what they cost the insurer
Non-weather water damage is one of the most frequent property losses and often one of the most expensive per claim, because a slow leak or a burst pipe runs unseen for hours. A Carrier Management feature (February 8, 2022) cited CoreLogic reports putting non-weather water damage at as much as $16 billion a year to insurers, and noted that Chubb and Hartford Steam Boiler both treat it as a leading cause of property-casualty loss. That is the economics: a $100 sensor that triggers a shutoff can prevent a six-figure claim and a long interruption.
The same logic applies to freezing, fire and equipment failure. Sensors turn what used to be a discovery after the fact into an alert, and they leave a time-stamped record that helps in claims.
Sensor types and what they protect against
| Sensor | What it detects | Typical exposures it addresses |
|---|---|---|
| Leak and moisture | Water on the floor, under a sink, near an HVAC unit or water heater, in a ceiling | Offices, retail, multifamily, hotels, restaurants |
| Flow monitoring and automatic shutoff | Abnormal water use on a supply line; closes a valve | Larger buildings, unoccupied space, long weekends |
| Temperature and freeze | Low temperature in a pipe space or unheated area | Vacant buildings, seasonal properties, cold climates |
| Smoke, heat and combustion | Early signs of fire; some detect overheating electrical gear | Kitchens, server rooms, warehouses |
| Equipment condition | Vibration, temperature or current on motors, compressors, boilers | Manufacturing, cold storage, building mechanical systems |
| Refrigeration and power | Temperature of a cooler or freezer, power status | Restaurants, grocers, pharmacies, cold chain |
| Occupancy and security | Door, motion and glass break, or unusual after-hours activity | Vacant or closed buildings |
Sensors do nothing unless someone acts on an alert. The best systems send alerts to more than one person, and a shutoff valve acts on its own when no one answers.
What insurers do with sensors
Distribution and monitoring programs
Several carriers and loss-control providers run sensor programs. The Carrier Management piece described Chubb deploying sensors in more than 300 of its insured buildings as part of a water-damage campaign, with Hartford Steam Boiler, which has sold IoT loss-prevention devices since 2014, and The Hartford named among insurers with similar systems. In the college example, the policyholder paid roughly $600 to $700 per building per year and received a premium credit from its carrier, though the credit was not disclosed. These are program-specific. Ask your agent which carriers have a written program for your class of business.
Premium credits, deductibles and eligibility
Some carriers offer premium credits, a lower water-damage deductible or better terms for insureds with approved devices, and some require sensors for certain risks, such as vacant or high-value buildings. Vendor marketing often quotes a discount percentage; unless it comes from a filed rate or a carrier document, do not rely on it. Credits for commercial risks are usually individually underwritten rather than a fixed schedule, and rate credits must be consistent with the carrier's rate filings (see commercial rate filing: prior approval, file-and-use and deregulation).
Carriers often care about details of the installation:
- Whether the equipment is on the carrier's approved list or meets a testing standard. FM Approvals publishes a standard (7745) for wireless water leak detection systems, and a manufacturer has said its product was certified to it; FM Global itself has not announced a premium credit, so treat the standard as a quality marker, not a discount.
- Professional installation versus do-it-yourself.
- Whether alerts go to a monitoring center or to an on-site person.
- Written response procedures and records of tests.
Underwriting and risk selection
A sensor network gives the underwriter data it never had: how often the building has water events, temperature in unheated spaces, runtime of key equipment. Some insurers use that data for pricing and for risk engineering visits. See loss control and the broader How AI is used in commercial underwriting guide. The caution is privacy and data rights: ask who owns the data, how long it is kept, and whether it can be used to non-renew you.
Claims
Sensor logs help establish when a loss started, what the cause was, and that you responded. That matters for the "sudden and accidental" tests in many policies and for the exclusion for continuous or repeated seepage (check the property form: the ISO CP 10 30 special form excludes continuous or repeated seepage or leakage over 14 days or more). The logs also support subrogation against a manufacturer or contractor whose equipment failed. See equipment breakdown insurance: what it covers that property insurance does not for failures of mechanical and electrical equipment, and spoilage coverage for refrigeration breakdown and power outage for refrigeration.
A practical example
Say a 20-unit restaurant group has a walk-in cooler in each location and a history of two spoilage claims. A broker proposes cooler temperature sensors with text alerts to the manager and an owner, plus leak sensors under dish stations. The carrier's underwriter may reduce the spoilage deductible or remove a refrigeration-maintenance condition if sensors and a written response plan are in place. This is a hypothetical; credits and terms vary by insurer. The group also gets what it needs most, an early alert at 2 a.m.
How to evaluate a program before you buy
- Ask the carrier or broker what is on offer, in writing: devices, monitoring, credit, and any conditions.
- Check the policy for protective safeguards or similar conditions. A requirement to maintain a system can turn a lapse in monitoring into a coverage problem. Read the endorsement before agreeing.
- Match the sensor to the loss. Leak sensors for water-heavy spaces; freeze sensors for vacant buildings; refrigeration monitoring for food. Consider vacant building insurance and the vacancy clause conditions if the building is empty.
- Plan for response. Assign who gets alerts, how fast they must act, and who shuts off the main valve. Test quarterly.
- Protect the data and the network. Connected devices are an entry point; keep them on a segregated network, patch them, and ask the vendor about security. Cyber underwriters ask.
- Keep records of installation, tests and alerts for claims and renewal. See fire and water damage prevention for commercial buildings for the physical measures that go with sensors.
Key takeaways
- IoT sensors detect water, freezing, fire and equipment problems early; the main benefit is the avoided loss.
- Carrier programs and credits exist but vary; there is no standard commercial discount, and any figure should come from the carrier in writing.
- Read policy conditions that require maintaining a protection system, because a lapse can affect coverage.
- Sensor data can support underwriting, claims and subrogation, but ask who owns and uses it.
- An alert only helps if someone is assigned to respond, so write down the procedure.