---
product_id: 3985949
title: "Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800)"
brand: "watts premier"
price: "₨259358"
currency: LKR
in_stock: true
reviews_count: 9
url: https://www.desertcart.lk/products/3985949-watts-hot-water-recirculation-system-with-programmable-timer-for-tank
store_origin: LK
region: Sri Lanka
---

# 120V efficient power Saves up to 15,000 gallons/year Programmable 24-hr timer Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800)

**Brand:** watts premier
**Price:** ₨259358
**Availability:** ✅ In Stock

## Summary

> 💦 Hot water on demand, savings on repeat — upgrade your flow game!

## Quick Answers

- **What is this?** Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800) by watts premier
- **How much does it cost?** ₨259358 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.lk](https://www.desertcart.lk/products/3985949-watts-hot-water-recirculation-system-with-programmable-timer-for-tank)

## Best For

- watts premier enthusiasts

## Why This Product

- Trusted watts premier brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Smart Savings Mode:** Built-in programmable timer customizes operation to your lifestyle, cutting water & energy bills.
- • **Sleek, Durable Design:** Heavy-duty aluminum housing with stainless steel pump head resists corrosion and noise.
- • **DIY-Friendly Plug & Play:** 120V quiet pump installs easily with included adapters and no extra plumbing hassle.
- • **Eco-Conscious Convenience:** Slash up to 10% off your water bill while reducing water waste by thousands of gallons annually.
- • **Instant Hot Water, Zero Wait:** Thermal bypass tech delivers hot water in ~15 seconds—never waste time or water again.

## Overview

The Watts Hot Water Recirculation System is a 120V, easy-to-install pump with thermal bypass technology that delivers hot water in about 15 seconds at every faucet. Featuring a programmable 24-hour timer and sensor valve, it conserves up to 15,000 gallons of water annually and reduces water heating costs by up to 10%. Designed for tank water heaters, this quiet, durable system includes all installation components and requires no maintenance, making it a smart, eco-friendly upgrade for modern homes.

## Description

Product Description Extremely quiet and energy-efficient, the Watts Hot Water Recirculation System utilizes thermal bypass technology to instantly supply hot water in about 15 seconds at every faucet or shower when needed. The sensor valve opens when the water on the hot water side cools, pushes the cool water back to the water heater, and closes when hot water line hits 98°F.Operating on 120V, the system easily installs into existing plumbing without the need for a return line or additional electricity under the sink, and once installed requires no maintenance. Includes everything you need for installation: heavy-duty stainless steel pump head in aluminum housing, 10 ft cord, 2 adapters with rubber washers, valve mounting screws, and two 12-inch supply lines. This product measures 6.2" x 6.0" x 5.0", weighs 8.4 lbs., and is highly resistant to stain and corrosion.With the Watts Hot Water Recirculation System, your days of wasting time, water, and money are over. With hot water available in 15 seconds, this convenient system can lead to significant water and money savings: up to 15,000 gallons per year and up to 10% off your water bill!This pump also includes a convenient built-in programmable timer that can be set to run for 24 hours a day or to activate only during peak use times. Its 24-hour dial features quarter-hour division tabs and AM/PM indications so you can easily set operation of the circulator according to your household's water usage patterns.Not designed for tankless water heaters. For indoor use only. From the Manufacturer The Watts Premier hot water recirculation pump puts hot water at every tap when you want it. Saves up to 15,000 gallons per year. The pump brings convenience and savings to your home, giving you hot water instantly at every faucet, when you need it. This unique product is easy to install and not only provides you with the convenience of hot water when you need it, but saves an average of over 11,000 gallons per year. *May not work with a tankless water heater.

Review: Excellent Product, Easy Install - I just installed this after buying in September 2025. It took me about an hour to get it fully installed. It runs silent and works very well. I was able to get hot water at most area's of my home in under 5-seconds. Considering getting an additional "sensor" valve to speed up one other section. I was worried about cost of electricity overtime but I used an AI agent and it resolved the math for me. Average cost was $1 to $3 monthly in eletricity based on response. I thought it would be significantly more to run continuously. One note, instructions mention to use pipe dope on the hose connection going to house from pump (but not tank to pump). I think thats easy to overlook. I had to go back and redo it as I initially overlooked.
Review: Instant Hot Water and Easy DIY Install – Great Product! - I was really impressed with the Watts Heat H2O Hot Water Recirculation System. It’s a great product that does exactly what it claims—delivers hot water almost instantly without wasting time or water. The biggest highlight for me was how easy it was to install. I’m not a plumber by any means, but the instructions were clear and all the parts were included. I had it up and running in about an hour using basic tools. The programmable timer is a great feature. I set it to run during the times we usually need hot water, and it works flawlessly. Our bedroom shower is on the opposite end of the house from the water heater, and we used to wait forever for hot water. Now, the wait time has been cut by more than half—it makes a big difference in our morning routine. The included sensor valve and adapters made the whole process smooth. It’s also quiet when it runs, which was a nice surprise. Plus, the 3-year warranty gave me peace of mind. Overall, this system is a smart investment if you're tired of waiting for hot water. It’s efficient, easy to install, and adds real convenience. Highly recommended!

## Features

- INSTANT HOT WATER: The Watts Hot Water Recirculation System utilizes thermal bypass technology to instantly supply hot water in seconds at every faucet or shower when needed. The sensor valve opens when the water on the hot water side cools, pushes the cool water back to the water heater, and closes when hot water line hits 98°F. Not designed for tankless water heaters.
- EASY DIY INSTALLATION: Operating on 120V, this quiet, efficient system easily installs into existing plumbing without the need for a return line or additional electricity under the sink, and once installed requires no maintenance. Includes everything you need for installation: heavy-duty stainless steel pump head in aluminum housing, 10 ft cord, 2 adapters with rubber washers, valve mounting screws, and two 12-inch supply lines.
- WATER CONSERVATION: Your days of wasting time and water are over. With hot water available in 15 seconds, this convenient system can lead to significant water bill savings: up to 15,000 gallons per year.
- CUSTOMIZABLE OPERATION: This pump includes a convenient built-in programmable timer that can be set to run for 24 hours a day or to activate only during peak use times. Its 24-hour dial features quarter-hour division tabs and AM/PM indications so you can easily set operation of the circulator according to your household's water usage patterns.
- EVERY DROP COUNTS: Water. It's in our name and close to our hearts. Since 1874, Watts Water Technologies has been delivering innovative technologies that make the world's most precious resource safe and accessible. Everything designed by Watts is made to keep the Earth's most precious resource safer, cleaner, and more useful for our customers.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000E78XHG |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #19,810 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #688 in Pumps & Plumbing Equipment |
| Brand | Watts Premier |
| Color | 6.2 Inches X 6.0 Inches X 5.0 Inches Device + Equipment |
| Customer Reviews | 4.5 4.5 out of 5 stars (5,643) |
| Date First Available | January 1, 2008 |
| Global Trade Identification Number | 00098268254761 |
| Included Components | Pump, sensor valve, fittings. |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Item Weight | 6.4 pounds |
| Item model number | Instant |
| Manufacturer | Watts |
| Material | Aluminum |
| Maximum Flow Rate | 6 Liters Per Minute |
| Number Of Pieces | 1 |
| Part Number | 0955800 |
| Power Source | Corded Plug |
| Product Dimensions | 6.2"L x 6"W x 5"H |
| Size | 6" X 6" |
| Special Features | Easy to Install |
| Style | Pump |
| UPC | 737946470047 733353301905 798813036773 752913142826 735090278151 098268433470 098268253764 |
| Voltage | 120 Volts |
| Warranty Description | Watts (the "Company") warrants each product to be free from defects in material and workmanship under normal usage for a period of one year from the date of original shipment. In the event of such defects within the warranty period, the Company will, at its option, replace or recondition the product without charge |

## Product Details

- **Brand:** Watts Premier
- **Color:** 6.2 Inches X 6.0 Inches X 5.0 Inches Device + Equipment
- **Global Trade Identification Number:** 00098268254761
- **Item Weight:** 6.4 Pounds
- **Material:** Aluminum
- **Maximum Flow Rate:** 6 Liters Per Minute
- **Power Source:** Corded Plug
- **Product Dimensions:** 6.2"L x 6"W x 5"H
- **Style:** Pump
- **Voltage:** 120 Volts

## Images

![Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800) - Image 1](https://m.media-amazon.com/images/I/71XiIit7Z5L.jpg)
![Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800) - Image 2](https://m.media-amazon.com/images/I/716RntFZfiL.jpg)
![Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800) - Image 3](https://m.media-amazon.com/images/I/718OMYHzdcL.jpg)
![Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800) - Image 4](https://m.media-amazon.com/images/I/71HkdrczIBL.jpg)
![Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800) - Image 5](https://m.media-amazon.com/images/I/715jbGLCqgL.jpg)

## Available Options

This product comes in different **Style** options.

## Questions & Answers

**Q: So what this does is move the hot water through the pipes constantly, not just when you need it? Seems like an energy suck. Is it?**
A: If you run this all the time you will likely increase your water heating costs significantly as you are turning your pipes into a big radiant heater.  You can use the built in timer to only have it come on at set periods, but this will only work if you have a very fixed schedule.  I attacked this another way.  I plugged the unit into a TP-Link HS110 Smart plug that is Alexa controlled.  I can just say turn on hot water pump or turn off hot water pump when I want to control it.  But that was not good enough for me.  I found that if this pump ran for four minutes it would give me hot water at the distant shower that I wanted, so I did the following.  I wrote a routine to turn on the pump, wait four minutes and then turn it off.  While I can run this by voice, I bought the new Amazon Alexa Button, they are about $14 for a two pack.  The button is battery operated and communicates to another Alexa device.  Just before I take a shower I push the button and within four minutes the water will be hot without having to run water.

**Q: If the pump is on, and the water is hot, the sensor valve closes, right?  Isn't the pump trying to push water against a totally closed line?**
A: The pump just stirs water in the pump housing. It's not a positive displacement pump, so it has no problem doing that. But most of the time the control valve allows a trickle of hot water to flow, just enough to keep the faucet temperature at a constant 100°.

**Q: can i used without the sensor valve**
A: The control valve keeps the water temperature at the faucet at 100° by slowing the flow to a trickle. If you don't use the control valve, be prepared for the hot water to circulate at full speed and the temperature at the faucet to go up to whatever your water heater is set for.

**Q: Does this shut down the flow completely once temperature is reached or will it continue to trickle water into the cold water line?**
A: The valve allows a slow flow of water back through the cold water line, enough to maintain the temperature at the faucet at about 100°F. If you let the hot water run, the temperature at the faucet goes over 100°F, and the valve shuts off the back flow through the cold water line. After the faucet is shut off, the water in the valve will cool to below 100°F, and the valve will crack open and allow some flow to keep the water warm. The valve does not bang open and shut. It opens more or less, as needed to keep the water warm at the faucet. It doesn't depend on the temperature set at the water heater, except that if the water is very hot, obviously it takes less to keep the water warm at the faucet. The valve accomplishes this automatically.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent Product, Easy Install
*by Z***S on February 2, 2026*

I just installed this after buying in September 2025. It took me about an hour to get it fully installed. It runs silent and works very well. I was able to get hot water at most area's of my home in under 5-seconds. Considering getting an additional "sensor" valve to speed up one other section. I was worried about cost of electricity overtime but I used an AI agent and it resolved the math for me. Average cost was $1 to $3 monthly in eletricity based on response. I thought it would be significantly more to run continuously. One note, instructions mention to use pipe dope on the hose connection going to house from pump (but not tank to pump). I think thats easy to overlook. I had to go back and redo it as I initially overlooked.

### ⭐⭐⭐⭐⭐ Instant Hot Water and Easy DIY Install – Great Product!
*by T***R on March 28, 2025*

I was really impressed with the Watts Heat H2O Hot Water Recirculation System. It’s a great product that does exactly what it claims—delivers hot water almost instantly without wasting time or water. The biggest highlight for me was how easy it was to install. I’m not a plumber by any means, but the instructions were clear and all the parts were included. I had it up and running in about an hour using basic tools. The programmable timer is a great feature. I set it to run during the times we usually need hot water, and it works flawlessly. Our bedroom shower is on the opposite end of the house from the water heater, and we used to wait forever for hot water. Now, the wait time has been cut by more than half—it makes a big difference in our morning routine. The included sensor valve and adapters made the whole process smooth. It’s also quiet when it runs, which was a nice surprise. Plus, the 3-year warranty gave me peace of mind. Overall, this system is a smart investment if you're tired of waiting for hot water. It’s efficient, easy to install, and adds real convenience. Highly recommended!

### ⭐⭐⭐⭐⭐ Well worth the money and SO easy to install.
*by R***R on May 19, 2024*

After years of waiting for water to reach the far areas of my house, I had finally had enough. This pump exceeded my expectations and works flawlessly. It sat on my counter for a few weeks until I finally decided to install it. Installation time was less than 30 min. It took me longer to get the junk out from beneath the far sink than it did to install. The instructions are straight forward and easy to understand. I did the under the sink valve first. They supply you with all the right hoses and connections. I did have to get long hoses, but that is not the fault of the mfg. My supply pipes are further apart. I bought longer hoses and everything was golden. Installing the pump was beyond easy. Yes I did have to buy the correct CPVC fittings with 3/4" threads to connect to the pump. Less than a dollar at the local hardware. Off the discharge pump I went with a flexible hose that connected to my system. You will have to buy a few extra pvc fittings if you need to make it work with your water heater system. It took less than 30 min to install in total and I plugged it in. I could tell it was working, but the pump is extremely quiet. We set the mode to timer, because we want it on from early morning to around 11 pm at night then the timer shuts off the pump. You will still have hot water, but just not as fast as when the pump is working. Even if you let it run all the time, it would cost around $20 a year, tops, but the timer is a nice feature. So far I am extremely happy with the product and it has hot water at our furthest sink within 5 seconds. Don't hesitate to buy this product.

## Frequently Bought Together

- Watts Hot Water Recirculation System with Programmable Timer for Tank Water Heaters, Instant Hot Water, 120V Pump, 10 ft Cord, 2 Adapters, Sensor Valve, Mounting Screws, 2 Supply Lines (0955800)
- Watts Premier Replacement Sensor Valve Kit for 500800, 500805, HWRS-WH Watts Instant Hot Water Recirculation System, Two 12" Supply Lines, Two Reduced Fittings 1/2" FTP - 3/8" MPT, Two Mounting Screws

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*Product available on Desertcart Sri Lanka*
*Store origin: LK*
*Last updated: 2026-03-16*