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Laing ACT-4 Potable Hot Water Recirculation Pump Kit


The Laing ACT-4 Recirculation Pump gives the owner a lot of features some Recirculating pumps do not such as no need for a return line to the water heater and the use of as little as 20 watts of power

10 in stock

SKU: 01-0803 Categories: , , ,


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This is a Laing Thermotech Xylem model ACT-4

Now you can have hot water in your home where and when you want it. No more waiting with the ACT-4 system. The pump and mixing valve wirelessly
communicate temperature data. The ACT-4 pump is installed on the supply side of the hot water source and the mixing valve under the sink farthest from the hot water source.

The desired water temperature at the mixing valve is set remotely with the thermostat dial on the pump. A signal is sent to the ACT-4 pump to begin circulating hot water throughout the system. The mixing valve tempers the cold water at the faucet / tap, providing instant hot water. When the set temperature is reached, a signal is sent to turnoff the pump. This prevents continuous pump operation, thus saving energy.

For additional energy savings, the pump can be set on timer based operation, to allow it to run only during time periods when hot water demand is high.

The ACT-4 pump requires as little as 20 watts to operate. The instant hot water delivery with the ACT-4 saves water and time. An optional push-button/signal repeater device is available to provide instant hot water with a touch of a button. Push button operation overrides the timer operation and continues until the desired temperature is met at the valve. Acting in its secondary function, the signal repeater extends the range of data transmission between the pump and valve.

The Laing ACT-4 Recirculation Pump saves as much as 12k Gallons of water per year



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– No recirculation Line Required
– No electric outlet needed under the sink
– Wireless communication between pump and mixing valve
– Max Water temp is 203 degrees F
– Max PSI is 145

For the general manual, click here.
For installation and maintenance, click here.
For more information and specs, click here.