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SmartPlug Instant Hot Water Control

SmartPlug ® Instant Hot Water Control

The patented SmartPlug ® Instant Hot Water Control lets you upgrade any existing hot water recirculation pump with a power cord to “Smart” operation. Simply connect the SmartPlug ® Instant Hot Water Control to any 110V power outlet then plug the circulator power cord into the SmartPlug. Using a sensor that mounts to the hot water supply pipe, the SmartPlug ® will record the daily hot water usage pattern in a home and adjust the circulator run time automatically. Hot water will always be available when needed. No Programming, Timers or Aquastats Required • Sensor Included • U.S. Patent #8,594,853 and #9,207,682

Easy to install: Upgrades any recirculation pump to “Smart” operation.

Water conservation: The average residence can save up to 12,000 gallons* of water per year by eliminating the wait for hot water to arrive at fixtures and taps.

Comfort and convenience: Hot water is available in seconds. No timers or programming required.

Efficiency: “Smart” setting maximizes hot water comfort and energy savings.

Reliability: The SmartPlug ® Instant Hot Water Control, when combined with a Taco domestic hot water circulator, provides whisper quiet operation and industry leading electronics for proven performance and dependability.

Instruction Sheet
Submittal Data
Piping Options
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Performance Data

Input: 120VAC, 50/60HZ, single phase, 6A
Output: 120VAC, 50/60HZ, Single phase, 1/2 hp (limited to 6 FLA, 36LRA)
Sensor: NTC Thermistor, 10K ohm @ 77°F, B= 3392
Fuse: 125V, 6A, Medium Acting 5×20 mm glass, Littelfuse® p/n 0233006 mxp
Ambient Operating Temp.: 50-104°F (10-40°C)

  • “Smart” Mode: When set to “Smart” mode, the SmartPlug monitors and records the home’s hot water usage pattern over a 7 day period. The SmartPlug will use the preceding week’s usage pattern to automatically cycle the circulator ON, so hot water is always available when it’s needed. The recording and repeating process is continuous, week after week.


  • “Pulse” Mode: When set to “Pulse” mode, the SmartPlug will continously cycle the circulator ON for 5 minutes, then OFF for 10 minutes to maintain hot water at all fixtures.


  • Vacation Mode: After 36 hours of no hot water usage, the SmartPlug will automatically turn the pump OFF and remain off until hot water usage is dectected.


  • Exercise Function: While in vacation mode the SmartPlug will cycle the pump for 10 seconds every 7 days to prevent any corrosion or scale build up. 
  • Domestic Hot Water Recirculation Systems

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