Why it matters
The AutoCirc installs under the sink or faucet farthest from the water heater and needs no return line. It draws only 14 W and runs under 30 dB.
A built-in 24-hour timer limits running to the hours your household uses hot water. Laing estimates savings of up to 17,000 gallons a year for a family of four.
Who it's for, and who should skip it
Good fit if
- Homes without a return line
- Owners who want low power use
- Quiet kitchens and baths
Look elsewhere if
- Sinks without an outlet
- Homes with a return line
Pros and cons
Pros
- 14 W
- 24-hour timer
- Under 30 dB
Cons
- Outlet needed under the sink
- Cold tap can run warm
- Short warranty
Limitations to weigh
- Under-sink recirculation without a return line sends warm water back through the cold line, so the cold tap at that sink can run warm for a few seconds.
- Hot water and electricity together: use a grounded outlet and follow the maker's installation steps.
Specifications
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Material | Brass | Retailer |
|---|---|---|
| Dimensions (seller) | 0.1"L x 5"W x 7.5"H | Retailer |
| Product weight | 2.9 lb | Retailer |
| Voltage | 115 V | Retailer |
| Horsepower | 1/50 HP | Retailer |
| Model number | LHB08100092 | Retailer |
| Warranty | Warranted against defects in materials and workmanship for 2 years from the date of manufacture or 1 year from the date of user purchase, whichever is sooner. | Retailer |
Alternatives worth comparing
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Final verdict
An efficient way to cut the wait for hot water.
Where to buy
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Questions buyers ask
Where does the AutoCirc install?
Under the sink farthest from the water heater.
How much power does it use?
14 W, per Laing.