Product images: Amazon listings
Written from the listing's specs, not from our own use · How we rate
The Rheem RH17920 Recirculation Pump Kit keeps it simple: a recirculation pump with a built-in timer. It is a good match for a long run between the heater and the master bath, at 7.1/10 on its documented specs.
| Brand | Rheem |
|---|---|
| Category | Service kits, valves & parts |
| Sold for | Rheem |
| Part number | RH17920 |
| ASIN | B076TH731R |
Full listing title: Rheem Tankless Recirculation Pump Kit (Timer Based)-RH17920
Rated from the listing's specs, no buyer reviews yet
What it's made for: a long run between the heater and the master bath.
Two recirculation pumps close to it on our rating, each with a dated price.
What it has going for it
Recirculation, timer. It moves hot water to the far fixture before you open it, so you stop running a gallon down the drain while you wait. A timer keeps it from running all night.
For Rheem. Parts like this are model-specific. Match the part number in your manual before you order.
Return line: if your house has one, the pump sits on it and moves hot water around the loop; the timer keeps it to the hours you shower, per the listing.
Crossover valve: without a return line, a valve under the far sink sends the cooled water back through the cold pipe. The cold tap runs lukewarm for a moment; that's the trade-off.
What the Rheem RH17920 Recirculation Pump Kit listing names:
Hold the figures against your own heater and its manual before you order.
On Sep 30, 2026, that price put it in the pricier third of the 6 recirculation pumps we have a recent price for.
The button opens the exact listing (ASIN B076TH731R), where today's price, stock and seller apply.
Our take
The Rheem RH17920 Recirculation Pump Kit is about a built-in timer, and it doesn't pretend to be more. No buyer reviews yet, so the Rheem RH17920 Recirculation Pump Kit has to win you over on paper. Honestly, the catch: a recirculation loop needs a return line or a crossover valve, which is extra plumbing. We'd pick it if you wait at the far bathroom sink for the water to warm up; otherwise, put it next to the Egmiku Recirculating Pump Kit first.
Before the Rheem RH17920 Recirculation Pump Kit goes in your cart, check your model number: it is listed for Rheem (part RH17920), and fit is model-specific.
Not every tankless takes a recirculation pump the same way; some need a minimum flow, some have a built-in mode. Check your manual first.
A dedicated return pipe or a crossover valve under the far sink closes the loop. Ask which one this pump expects.
Use the timer so it only runs around shower times.
How the Rheem RH17920 Recirculation Pump Kit stacks up against the closest alternative, the Egmiku Recirculating Pump Kit.
| Criterion | Rheem RH17920 Recirculation Pump Kit | Egmiku Recirculating Pump Kit |
|---|---|---|
| Our rating | 7.1/10 | 7.1/10 |
| Fits | Rheem | Not stated |
Both score 7.1/10. Compare the listings side by side to choose.
We rate it 7.1/10 (good). The rating comes from its documented listing alone, as no customer-review record is captured yet.
Its listing states a built-in timer. These are the seller's figures, not our measurements: whether it fits your exact heater is worth confirming first.
Your heater: not every tankless takes a recirculation pump the same way; some need a minimum flow, some have a built-in mode. Check your manual first. Return line: a dedicated return pipe or a crossover valve under the far sink closes the loop. Ask which one this pump expects. Power and timer: use the timer so it only runs around shower times.
We link to the exact listing on Amazon, where today's price, stock and seller apply. It is an affiliate link, and it has no effect on the rating.
No, we haven't used it ourselves. Everything on this page comes from its listing, read line by line and weighed with our published formula.