How to Install a Recirculating Pump on a Water Heater Easily!

Want to install a recirculating pump on your water heater? It’s important to know how it works and the benefits it provides. This article will guide you through the process and provide useful tips.

  1. Turn off the water supply at the main valve.
  2. Find a suitable spot near your water heater. It’s best to hire a licensed plumber.
  3. Connect the supply lines to the hot and cold water pipes. Use sealant to avoid leaks.
  4. Install a check valve on the cold water supply line near the furthest fixture from the heater. This ensures that only hot water is circulated.
  5. Connect a return line from the furthest fixture back to the heater for unused hot water.
  6. For maximum efficiency, install an automatic sensor valve near each plumbing fixture. This shuts off circulation when hot water reaches a specific temperature, conserving energy.

Follow these steps and you’ll improve the efficiency of your hot water delivery system. Installing a recirculating pump saves water, reduces energy waste, and gives you instant hot water when you need it.

Key Takeaways

  • 1. A recirculating pump can help improve the efficiency and convenience of your water heater by providing instant hot water throughout your home.
  • 2. Before installing a recirculating pump, make sure to turn off the power and water supply to your water heater.
  • 3. The pump should be installed on the hot water outlet pipe of the water heater, and a return line should be connected to the cold water inlet pipe.
  • 4. It is important to properly size the pump and select the right type of pump for your specific water heater system.
  • 5. Installing check valves on the hot water outlet and cold water inlet pipes can prevent backflow and ensure proper circulation.
  • 6. The pump should be wired to a dedicated electrical circuit and controlled by a timer or a demand-based system to optimize energy efficiency.
  • 7. Regular maintenance, such as flushing the system and checking for leaks, is necessary to keep the recirculating pump functioning properly.
  • 8. Installing a recirculating pump may require some plumbing knowledge and tools, so it is recommended to consult a professional if you are unsure about the installation process.

Understanding the Purpose of a Recirculating Pump

recirculating pump is a must-have for hot water lovers! It quickly circulates hot water through the pipes, so you don’t have to wait for it. Plus, it’s energy efficient, it keeps water warm so you don’t waste resources.

Sarah understood this when she moved into an old home with outdated plumbing. Every morning, waiting for hot water was a pain. So, she bought a recirculating pump and it changed her life! In seconds, she had hot water at her fingertips. No more cold splashes in the face or struggling to wash up when running late.

The convenience of a recirculating pump is amazing! No more waiting for hot water – just switch on and enjoy. Investing in one is a wise decision. Get ready to bid farewell to waiting and welcome a more convenient lifestyle!

Gathering the Necessary Tools and Materials

Gather these tools and materials to get started:

  • A recirculating pump: Circulates hot water through pipes.
  • Pipe cutters: Cut pipes to the right length.
  • Pipes: Hot and cold supply lines, plus a dedicated return line for the circulation system.
  • Check valves: No mixing of hot and cold water.
  • Sensor valve: Controls when the pump runs.
  • Teflon tape: Watertight seals on threaded connections.

Before beginning, shut off water supply at source and drain the water heater.

Measure and cut pipes with pipe cutters. Use Teflon tape on threaded connections. Install check valves for hot and cold water supply lines. Fit the recirculating pump, don’t forget the dedicated return line.

Consult a licensed plumber if you’re in doubt. Now, you’re ready to install a recirculating pump on a water heater.

Turning Off the Water Supply and Draining the Water Heater

To install a recirculating pump on a water heater safely, first turn off the water supply and drain the water heater. Here’s the method:

  1. Locate the shut-off valve. It is usually near the water meter or main water line entering your home.
  2. Use a wrench or pliers to turn off the valve clockwise and stop water flow.
  3. Connect a hose to the drain valve at the heater’s bottom. Place the other end in a suitable drainage area, such as a floor drain or outside.
  4. Open all hot water faucets – showers, sinks, and tubs – to allow air into the system and facilitate draining.
  5. Open the drain valve by turning it counterclockwise. This releases hot water from inside.
  6. Wait for complete drainage before going further.

It’s best to get a licensed plumber if you’re not familiar with these tasks. Also, it’s important to be extra cautious when turning off water supply and draining the water heater. Following these steps will help you install a recirculating pump successfully.

Finding the right spot for the pump is like searching for a unicorn in a plumber’s nightmares!

Locating the Ideal Placement for the Recirculating Pump

To get your pump in the perfect spot, follow these six simple steps!

  1. Identify a nearby hot water supply line.
  2. Consider accessibility, noise levels and valve compatibility.
  3. Optimize heat retention and think about installing an expansion tank.
  4. Also, insulate pipes, use stainless steel braided hoses, and establish designated return lines.
  5. That way, you’ll have efficient water circulation and speedy hot water delivery!
  6. No more time for pondering the purpose of life while you wait for hot water.

Installing the Recirculating Pump

  1. Turn off the electricity or gas of the water heater for safety.
  2. Find the cold water supply pipe nearby the water heater, and a good spot to install the pump.
  3. Cut into the cold water pipe precisely with a pipe cutter.
  4. Add a check valve on the cut pipe to stop hot water flowing back into the cold water supply.
  5. Attach the pump to the check valve with pipe fittings and secure it with hose clamps.
  6. Connect a return line from the hot water outlet to the cold water inlet of the water heater, for hot water circulation.

Remember, it can vary with each installation – so get an expert plumber! Plus, recirculating pumps help save water and energy. They give you instant hot water and reduce heat loss. Fun fact, according to Rinnai Tankless Water Heaters, they can save up to 12,000 gallons of water each year! For troubleshooting and maintenance tips, consider the importance of hot water – no one wants to boil water over a campfire.

Troubleshooting and Maintenance Tips

Having issues with your recirculating pump? Here are a few tips for troubleshooting and maintenance to help keep it running smoothly:

  1. Check the power supply. Ensure that the pump is connected to a power source and there are no loose connections or tripped circuit breakers.
  2. Inspect the pump for leaks. Look for signs of leakage around the pump and its connections. Tighten any loose fittings and replace any damaged seals or gaskets.
  3. Clean the pump. Debris and sediment can build up, affecting performance. Regularly clean and remove obstructions that hinder water flow.
  4. Test the check valve. This prevents hot water from flowing back into the cold line. Test its opening and closing mechanism.
  5. Bleed air from the system. Reduced hot water flow may indicate air trapped in the system. Operate the recirculating pump until a steady stream of water flows out.

Inspect the pump regularly to catch any issues early. My friend had a malfunctioning pump which caused their tankless water heater to produce lukewarm water. A faulty sensor valve was the culprit; once replaced, their hot water was restored.

Installing a recirculating pump will save you the time of waiting for hot water, win-win!

Frequently Asked Questions

How do I install a recirculating pump on a water heater?

To install a recirculating pump on a water heater, start by turning off the water supply and draining the tank. Next, mount the pump near the water heater and connect it to the hot water outlet using pipe fittings. Install a check valve and a tee fitting in the hot water line for proper recirculation. Lastly, connect the pump to a power source and adjust the settings according to the manufacturer’s instructions.

Can I install a recirculating pump on a Rinnai tankless water heater?

Yes, you can install a recirculating pump on a Rinnai tankless water heater. The process is similar to installing it on a traditional water heater. However, it is recommended to consult the manufacturer’s guidelines or consider professional assistance to ensure compatibility and proper installation.

Should I install a hot water recirculating pump in my plumbing system?

Installing a hot water recirculating pump has several benefits, including instant hot water, water conservation, and energy savings. If you find yourself waiting for hot water for an extended period, installing a recirculating pump can eliminate this wait time and save water that is otherwise wasted while waiting for hot water to reach the faucet.

How does a hot water recirculating pump work?

A hot water recirculating pump, when installed in a plumbing system, circulates hot water from the water heater to the faucets and fixtures in a continuous loop. This ensures that hot water is readily available at any designated outlet, eliminating the need to wait for hot water and reducing water wastage.

What are the pros and cons of installing a hot water recirculating pump?

The pros of installing a hot water recirculating pump include instant hot water, water conservation, and energy savings. The cons may include the initial cost of the pump and possible increased energy consumption. However, the benefits usually outweigh the drawbacks for most households.

Is it necessary to hire a licensed plumber to install a recirculating pump on a water heater?

While it is not always necessary to hire a licensed plumber, it is recommended for proper installation of a recirculating pump on a water heater. Plumbing systems can be complex, and a professional plumber can ensure that the pump is installed correctly and meets all necessary codes and standards.


Installing a recirculating pump on a water heater can provide many perks. Such as, instant hot water and conserving water. This works by circulating hot water through the plumbing system, so there is no need to wait for hot water at your taps. This is great for large families or multiple bathrooms.

To fit a recirculating pump on a tankless water heater, there are certain steps to take. Firstly, make sure you have the correct tools and materials. This includes a return line from the furthest fixture back to the water heater. This should be wide enough for the volume of flow needed for the pump.

  1. Turn off the water supply to the heater and empty any water left.
  2. Install the recirculating pump next to the tankless heater, with the right brackets or supports.
  3. Join the inlet of the pump to the cold water supply line, using suitable fittings.
  4. Make sure everything is connected tightly and no leaks, using Teflon tape or other sealing materials.
  5. Also, install a check valve in this line to prevent hot water flowing back into the cold water supply.

Turn the water supply back on and ensure all connections don’t leak. Test your new system by turning on a faucet or shower farthest from the tankless heater. You should get hot water instantly.

A family found many benefits after installing a recirculating pump. They used to wait a few minutes for hot water in their master bathroom shower. This was not only irritating but also wasted a lot of water each day. After hiring a plumber to fit the pump, they got instant hot water. This saved them time and money.

This family was pleased with the outcome and the energy savings. They suggest considering a recirculating pump if you have a tankless water heater, as it can be convenient, efficient and save costs in the end.

So, follow these steps and keep in mind the advantages of fitting a recirculating pump on your tankless water heater. This can give you instant hot water and reduce water waste in your home. For optimal installation and efficiency, consult with a professional plumber.