What it delivers
The Grundfos UP15-10SU7P Hot Water Recirculation Pump is a hot water recirculation pump.
It cuts the wait at distant fixtures by keeping hot water moving in the line; tankless heaters have a minimum flow, so follow the heater maker's recirculation instructions.
Use a timer or on-demand control so the heater isn't firing to keep the loop hot all day, and insulate the hot line to the far fixture.
Listed details: connections: 3/4-Inch FNPT; model: UP15-10SU7P.
The listing gives a weight of 6.67 lb.
Right unit for this house?
Install it when
- Long waits for hot water
- Owners who flush their own heater
Look at another unit when
- Heaters whose manual calls for a different method
Strengths and trade-offs
Strengths
- Recirculation pump
Trade-offs
- Match it to your heater's fittings
Install limits
- Figures are the maker's or seller's own. Flow at a rise is our estimate from the input; gas, venting and electrical work needs a licensed professional.
Rated performance
Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.
| Model number | UP15-10SU7P | Retailer |
|---|---|---|
| Product weight | 6.67 lb | Retailer |
| Voltage | 120 V | Retailer |
| Connections | 3/4-Inch FNPT | Retailer |
| Replaces | Grundfos 595916 | Retailer |
Rival units at this flow
More descaling and maintenance kits rated for similar demand
Final verdict
A well-specified recirculation pump for long waits for hot water.
Buy this unit
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