Model # 500800

Internet #100426993

Store SKU #396787

null Hot Water Recirculating System with Built-In Timer
0098268253764

Hot Water Recirculating System with Built-In Timer

  • Quiet, maintenance-free operation
  • Includes all parts needed for installation
  • Works on any system without additional piping
$199.00 /each

Frequently Bought Together

Product Overview

Never wait for hot water again. The-Watts Hot Water Recirculating Pump provides hot water at every faucet or shower when needed, eliminating wasted water. It is easy to install on any water system and requires no additional piping. The unique design of the pump ensures quiet, maintenance-free operation. The system includes a built-in 24 hour, dual setting programmable timer to activate the pump only when needed.

California residents: see   Proposition 65 information

  • Conserve water up to 15,000 Gal. of water per year
  • Save money, up to 10% of your water bill
  • Maintenance free
  • Easy to install in less than 1 hour
  • Includes everything you need- pump with timer and 10 ft. electric cord, two adapters with rubber washers, valve mounting screws, sensor valve, two 12 in. supply lines
  • Additional sensor valves available for homes with multiple plumbing loops
  • Click here for more information on Electronic Recycling Programs

Info & Guides

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Specifications

Dimensions

Details

Warranty / Certifications

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Customer Questions & Answers

I have had this installed but I am getting too much warm water out of my cold faucets. How do I adjust so cold comes out the cold faucets?

Asked by: Frustrated
If the pump stopped pumping once hot water reached the sink this wouldn't be a problem. These systems utilize a Normally Open thermostatic valve that closes only after 94F water contacts the valve. Once closed the valve won't open until heat loss occurs in the hot water pipe dropping the temperature below the valves specified temperature. This results in 93F water entering your cold water line at the same rate at which heat is being lost through convection in your hot water lines. There is a video on youtube showing that's normal to wait as much as 80 seconds for cold water at taps which have these valves installed.
Answered by: SteveO
Date published: 2016-08-17

DO I REALLY NEED THE PUMP OR WILL JUST THE SENSOR VALVE DO THE TRICK

lF I UNDERSTAND THE PUMP ONLY INCREASES THE PRESSURE.
Asked by: BKLYNDOG
I think the fellow who indicated "convection" has a point. In an instance where the hot water is required, say a kitchen sink, is higher in elevation than the hot water heater and they are directly connected by the addition of a dedicated line back to the water heater, then water should flow through the circuit due to thermal convection. Cold water is more dense than hot water and would like to flow downwards while at the same time the hot water would tend to rise. The resulting differential in pressure is very low and dependent on the height difference between the two points and the pressure drop through the pipe. Thus the efficiency of this would be increased by a greater height difference and larger supply and return lines.
Answered by: Jules
Date published: 2017-01-27

can this pump be used with tankless hot water heaters?

Asked by: GeorgeM1
NO
Answered by: AR
Date published: 2017-01-22

Does this unit heat up the water in the toilets?

I was wondering if this unit causes issues with warm water in toilets?
Asked by: luckydog777
Ha!!! don't I wish... the answer is no... the hot water needs a to and from loop to circulate... the toilet is a single (to) pipe so there is no return for the hot water to go back to the tank... you would have to flush a LOT to get warm water to the toilet!
Answered by: totem12
Date published: 2017-02-10
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Customer Reviews

Hot Water Recirculating System with Built-In Timer is rated 4.3 out of 5 by 284.
Rated 4 out of 5 by from Great product The pump works great! I have hot water in under 30 seconds, compared to 5 minutes before. I had it professionally installed, took him about 1 hour. I do notice that the tile and laminate floors are warm where the pipes lead from the gas water heater to the sinks. It doesn't change the temperature in the house noticeably, but with consistent 100 degree weather, my AC is on all the time anyway. However, my gas bill did triple the first month (from $8 to $24). I had the timer set to go on at 5am and off at 10pm. I have changed it now to come on at 5am, off at noon, on at 5pm, off at 10pm. We'll see if that helps. I haven't noticed a change in my water bill, as I had to bump up the sprinkler timers to longer times due to the weather, and the city increased our water rates, again.
Date published: 2016-09-21
Rated 5 out of 5 by from Our master bath is approximately 70 feet from the water heater. It took nearly 3 minutes to get h... Our master bath is approximately 70 feet from the water heater. It took nearly 3 minutes to get hot water to the shower & sinks. It gets really cold here in the state of Wyoming. No more wasted time and water. This little jewel is spot on. I installed it myself. There were a hot & cold water line next to our vanity. I just installed the 2 lines to the black fitting inlets and capped the outlet sides. Electrician required to plug in the cord from the pump??? Really?? A plumber?? You only need a pair of pipe wrenches or water pump pliers. Maybe a Pex crimper & fittings or a couple of solder joints with a small Mapp torch.
Date published: 2016-12-21
Rated 5 out of 5 by from I had this up in running in 15 minutes. This is my second one I've had (moved to a new house) I'... I had this up in running in 15 minutes. This is my second one I've had (moved to a new house) I've about a year experience with these, no issues. It is really nice to turn on the faucet and hot water is there. We hate to run water for 5 minutes down the drain. We live in Phoenix so we try to conserve water where we can.
Date published: 2016-12-14
Rated 4 out of 5 by from I now have immediate hot water at my Upstairs master bathroom! This product has an electrical co... I now have immediate hot water at my Upstairs master bathroom! This product has an electrical cord (not battery) so I had to install an electrical outlet in my hot water closet. Other than that, use caution when attaching the plastic threaded manifold at the sensor point; it is somewhat susceptible to stripping the thread. Note with this product you will have somewhat the reverse problem (warm water in your cold faucet) but only for about ten seconds and only at the faucet where the sensor is located.
Date published: 2016-12-15
Rated 3 out of 5 by from Most interesting.It worked for a day, then it did not. Called the Manufacturer to find out that i... Most interesting.It worked for a day, then it did not. Called the Manufacturer to find out that it was a unit built in 2012 (4 year old unit). They suggested that I take it back. Rather I bought a new unit from WATTS and then took the older unit back to HD. Suggest opening the box, look at the P/N....it should read something like 1616 (Year/Week) in this car built in 2016, Week 16. Unit works well, easy to install, brings hot water to tap in 5-30 seconds.
Date published: 2016-11-08
Rated 4 out of 5 by from Easy to install with all hardware needed to complete installation. I always wanted to add this p... Easy to install with all hardware needed to complete installation. I always wanted to add this product on top my water heater. I get hot water to the farthest part in our home in 5 seconds instead on waiting 35 seconds. I save approximately 5 gallon of water a day. So this is good for the environment.
Date published: 2016-12-22
Rated 2 out of 5 by from Installed this system in my house recently. The product works as advertised. However, now I have ... Installed this system in my house recently. The product works as advertised. However, now I have to wait for cold water to come out of my faucets! It's a trade off. Yes, I get hot water sooner, but I'm not happy with the length of time I have to wait for my cold water now.
Date published: 2016-10-25
Rated 5 out of 5 by from The quality was good, instructions easy, works as it says. Minor Con: Pay attention to instructi... The quality was good, instructions easy, works as it says. Minor Con: Pay attention to instructions though, if there is more than 1 loop of piping in your house you will need to buy another valve kit, no big deal really, but you need to get it if you want the full benefits of have almost instant warm water at all locations. Benefit: I ended up turning my water heater temperature way down because the pipes stayed warm allowing the water (when used) to not dissipate as much heat, those cold pipes (I have copper) make a huge impact on the water temperature when it reaches the fixture. Minor Con: I did lose pressure in 2 sinks and a shower after hooking up the unit. Turns out that the recirculating of the water must have kicked-up a lot of debris which got caught in the smaller orifices and screens. I just disconnected them and blew them out. Now my pressure is much greater than before, so it needed to get done regardless. No reason not to have one of these, especially if you are waiting more than 20 seconds for warm water.
Date published: 2017-01-04
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