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Water Heater FV Sensor

Marine Gasoline Sensors

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White DotTM FV Sensor

Prevent your Power Vent or Direct Vent Water Heater from Shutting Down Again. Guaranteed to Never Fail.
Disconnect water heater from electrical power and remove old FV sensor and holder.
Connect sensor leads to White Dot FV sensor.
White Dot Sensor snaps into water heater. Reset water heater according to manufacturers instructions.
Guaranteed to never need replacement for the life of the water heater.
Guaranteed base resistance 20K-ohms +/- 10%
Gaurenteed no false positive trips.

  • Guaranteed to never need replacement for the lifetime of your water heater.
  • Guaranteed to be fully compatible with all gas thermostats.
  • Guaranteed no false trips from humidity, condensation, dampness, leaking water, bleach, ammonia, pets, sewer gas, sensor drift.
  • Guaranteed to always reset after exposure to flammable vapor. 
  • Ultra-reliable sensor technology in use at all major oil company gas stations for safety/environmental compliance.  Meets EPA/530/UST-90/008 third party testing protocol, the most stringent vapor sensor testing protocol.
  • When you replace your old water heater be sure to remove and keep your White Dot FV sensor for when your new water heater's FV sensor needs replacement.  Yes, it lasts that long.
Home owners will benefit from a reduced cost of ownership because they will never need a service call due to a failed FV sensor.  Here's why:

Sensor guaranteed to never need replacement.

Sensor guaranteed to always reset to manufacturer specifications, even after mulltiple vapor events.

Guaranteed no false positives from humidity, condensation, flooding, bleach, ammonia, Pine-Sol, pets, sewer gas, dust, spices, sensor drift.

Better electrical tolerances and diagnostics. Part to part base resistance guaranteed to be within 10% for lifetime of water heater.  Top resistance value is available as an option, to be used to detect a disconnected sensor.

Sensor is fully compatible with all power vent & direct vent gas thermostates.

Sensor mounts flush to water heater exterior.  No bracket.

Sensor can ship installed on water heater.  No field installation required.

Unmatched performance record in extreme environments. 60 year history in marine gasoline vapor detection. 30 year history in underground storage tank gasoline vapor detection.  Meets stringent third party testing protocols. 

  • Ultra-reliable sensor technology in use at all major oil company gas stations for safety/environmental compliance.  Meets EPA/530/UST-90/008 third party testing protocol, the most stringent vapor sensor testing protocol.