Best Hot Water Recirculating Pump – On Demand Ultimate Reviews

Last updated on October 18th, 2022 | By: Grady Galvez

Water Heater Recirculating Pumps are used in hot water heaters and are there to circulate the water and to make sure the water gets hot instantly, which means that if the pump is working properly, you don’t have to wait for your water to heat up efficiently. They circulate gasses, liquids, and slurries in a closed or loop circuit, and they help the water heater run more efficiently. There are several types of these pumps, as well as many different brands and designs, and if you’d like to learn a little more about the pros and cons of  hot water recirculating pumps along with review, read on.

7 Instant Hot Water Recirculating System

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Hot Water Circulation Pump System with Built in Timer

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1. Watts 500800 Domestic Hot Water Recirculation Pump

This hot water circulation system eliminates wasted water and can pump hot water to every faucet and shower in your home. With regular use, you can save up to 15,000 gallons of water per year, and it connects easily to any plumbing fixtures you currently own. It comes with a 24-hour programmable timer that will activate the system whenever you’re ready, and it is much quieter than a lot of other systems.

The Watts 500800 is also maintenance-free and very fast and simple to install. It comes complete with two adapters that have rubber washers, a sensor valve, valve-mounting screws, and two 12-inch supply lines. Made out of cast aluminum, the pump is built to last and weighs barely six pounds. It is also made for the system to run more efficiently, which means you’ll be spending a lot less on your utility bills each month. You can find this product on Amazon.


  • Very efficient and lowcost to operate.
  • No long waits to get warm or hot water.
  • A lot of value for the money.


  • Doesn’t always work with heaters that have heat traps.
  • Some customers claim it doesn’t last very long.
  • Some problems with defective pumps have been reported.

     ★ Top Pick       

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2. Laing LHB08100092 Under Sink Hot Water Recirculating Pump

This hot water recirculation pump is made to be installed under the sink or the faucet the furthest away from the hot water heater. With no need for a return line, the Laing pump operates on only 14 watts of power, and it comes with a power cord that is six feet long. It also operates at less than 30 decibels, which means it is an extremely quiet pump system. The 24-hour built-in timer is an excellent addition to the system, and it can be adjusted to suit the needs of any family size.

The system is also extremely efficient, saving the average family of four up to 17,000 gallons of water per year. At roughly three pounds, it is also a very lightweight, portable pump, and it comes with a two-year warranty against defects in materials and in basic workmanship. Within 15 seconds or less, you can get nice, hot water running through your system, and it is designed to be both functional and efficient. You can find this product on Amazon.


  • Very good quality for the money.
  • Very easy to install and use.
  • Heats up water very quickly.


  • Some have come with broken parts, particularly the impeller.
  • Some users have claimed it is too loud.
  • Some problems with the product leaking.

     ★ Top Pick       

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3. SumpMarine UTP Portable Transfer Water Pump in Bronze

This heavy-duty water pump is made out of durable materials and hose connectors made of metal, enabling it to be more reliable than pumps with plastic threads. For transferring water from one place to another, you cannot beat this pump, and it is perfect for both household and commercial use. It even comes with a six-foot hose and a water suction attachment.

Weighing under six pounds, this is a lightweight, but very functional water pump that can be used in a variety of items, and it even comes with an impeller replacement kit for convenience. It operates from a wall socket and is very portable thanks to its size and weight, and its power cord is roughly four feet long. It is also easy to set up and easy to start, and the extras that are included make it a great investment. You can find this product on Amazon.


  • It comes with several attachments and replacement parts.
  • A high-quality, reasonably priced product.
  • Works both quickly and efficiently.


  • Some pumps quit working after a short period of time.
  • Some customers claim it is very loud.
  • Some of the motors have burned up sooner than expected.

     ★ Top Pick       

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4. SHURFLO 4008-101-A65 Water Pump Revolution

The SHURFLO water pump is self-priming and operates at three gallons per minute. It has an internal bypass system and low cycling, and it runs dry because it is thermally protected and has a built-in check valve. The system runs efficiently and, therefore, saves you money on your utility bill, and it operates very quietly as well. At just under four pounds, the pump is lightweight and runs on only 12 volts. In addition, it can replace many other SHURFLO systems without requiring any type of piping changes.

If you want a high quality, but reasonably priced, water pump, this one is a great choice. It is also so quiet that many customers have sworn their systems weren’t working, even though they were. With ½-inch screw fittings, the system is very unlikely to leak, and it is a good overall, very reliable pump system. For RVs and motorhomes, you simply can’t beat this type of water pump, especially when you consider its low price. You can find this product on Amazon.


  • It comes with several attachments and replacement parts.
  • A high-quality, reasonably priced product.
  • Works both quickly and efficiently.


  • Some pumps quit working after a short period of time.
  • Some customers claim it is very loud.
  • Some of the motors have burned up sooner than expected.

     ★ Top Pick       

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5. Grundfos 59896155 Small Water Circulation Pump

The Grundfos re-circulator pump is a small pump that is red in color and has a shaft made out of ceramic and radial bearings. The rotor can and bearing plate is made out of stainless steel, and the impeller is corrosion resistant. The pump housing is made out of cast iron, and there is a carbon axial bearing. In other words, this hot water re-circulator is built to last, and it is a very efficient, money-saving pump as well.

This is an easy-to-install system that keeps cold water cold and enables you to get warm or hot water almost instantly. It is a heavy-duty system that can save you a lot of money on your utility bill, and it is very quiet while it is operating. Most people can install the entire system in less than half an hour, and it is made to last longer and cost less than many of its competitors. You can find this product on Amazon.


  • Very good value for the money.
  • Good replacement for other systems.
  • Built to last a very long time.


  • Some have complained about rust being found in the water.
  • Some concerns about the overall quality.
  • Some concerns about it not lasting very long.

     ★ Top Pick       

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6.Taco 006-B4 Bronze Sweat-Hot Water Circulator Pump

The Taco brand circulator pump operates with fluid temperatures from 40ᵒF to 220ᵒF, and it has a maximum working pressure of 125 PSI. It has a very unique cartridge replacement design and a quiet, very efficient operation. The pump system comes in a compact design and has a high-capacity output. This is an efficient system that consumes very little power when operating.

With the Taco system, you can even purchase one- to five-pack sets, which saves you some money if you want more than one. In addition, many users have claimed that it is such a quiet system that it often sounds like it is not operating at all. These pumps are often recommended to consumers by professional plumbers, and they use a lot less electricity than many people realize. You can find this product on Amazon.


  • Great performance for the price.
  • Easy and quick to install.
  • An excellent all-around pump.


  • Some problems with the system leaking.
  • Some systems have been shipped with the wrong connections.
  • Some users have complained that it didn’t last as long as expected.

     ★ Top Pick       

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7. BACOENG 110V/115V Hot Water Recirculating Pump With Timer

The BACOENG circulation pump system is a very versatile pump, because it can be used in-floor heating systems, hot water systems, and even for the DIYer in your home. If you like, you can easily add a timer so that the system is even more efficient, and you can add a bridge valve for no-return pipe systems. The system is also a very high-quality system, with a corrosion-resistant impeller, cast-iron pump housing, and ceramic shaft.

This type of pump has high-sensitive electronic sensors and a three-speed control, not to mention a very quiet, environmentally friendly design. It has a carbon axial bearing, and the connector has lead-free brass fittings. It is very simple and fast to install, and the ½-inch deep thread means that the tube won’t leak. It is a good overall pump system that is built to last and to work efficiently for a very long time. You can find this product on Amazon.


  • A lightweight, portable design.
  • Simple and fast to install.
  • A great product for the money.


  • Some complaints about it breaking soon after purchase.
  • Some complaints about low quality.
  • Some complaints about the warranty and customer service.

Types Of Best Hot Water Recirculating Pumps

Hot Water Recirculating Pumps

1. Pump At The Water Heater

Placing a recirculating system at the water heater is very efficient because it enables you to get hot water much faster than not having the pump at all. This is especially true if your hot water heater is located on the other side of the house from your bathroom or kitchen. When this happens, you have to wait much longer to get water that is hot, which means you waste a lot of gallons as well. Having a pump at the water heater location, however, eliminates this problem and saves you a lot of money in the process.

2. Pump At A Point Of Use

Pumps at the point of use are attached to a certain faucet and only work with that particular faucet. Some smaller homes use point-of-use pumps because they are a fast and simple solution. They are also inexpensive and, therefore, you can place them in various locations around your house. Some people find these systems to be more useful than the systems that are attached to the water heater, which tend to be more expensive and more complex.

3. Timer/Aquastat-Driven Systems

A timer is one of the best investments you’ll ever make because once it is attached to the water heater, it enables the heater to work only at certain times of the day. This means that when the timer is off, only cold water will be available, but you’ll save a lot of money on your utility bill because you only get hot water at certain times. Indeed, the hot water heater isn’t making hot water 24 hours a day, which saves you a lot of money year after year.

➞ Why Get A Hot Water Recirculation Pump?

When you turn on your faucet, the water has to travel through your plumbing system until it gets to the faucet itself, and when you need hot water, the system has to heat up the water first. Unless you want to wait a very long time to enjoy that nice, hot water, you’ll need a water recirculation pump. If you don’t have one of these pumps, the water in your pipes that didn’t make it to the faucet stays there once you turn it off, until the next time when it is pushed out by water from the water heater.

A circulating pump will return unused water back to the water heater instead of keeping it in the pipes. This not only allows the system to run more efficiently, thereby saving you a lot of money on your utility bill, but it also enables you to get hot water much faster. Therefore, you can consider one of these pumps the perfect way to get hot water on demand and let’s face it, that is important to most, if not all households.

➞ What Is A Recirculation Pump?

Recirculation pumps are attached to a certain pipe and keep water circulating as long as the faucets are on; in other words, their main purpose is to keep hot water moving through the pipes so that when you turn on the faucet, the water is immediately available. Without one of these pumps, there will be more piping between the faucet and the water heater, which means it will take longer for the hot water to get to the faucet so that it can be utilized. These pumps are placed in strategic locations so that they do their job efficiently and safely every time.

Different Types Of Hot Water Recirculating Systems Available

➞ Traditional Hot Water Recirculating Systems

Traditional hot water recirculating systems can be attached to either a specific faucet or the water heater itself. They are made to heat up the water quickly, so once you turn on the hot water faucet, you never have to wait long to get the hot water you need. This isn’t to say the hot water comes out immediately because it doesn’t; however, it usually comes out very quickly and gets to the faucet without you waiting a long time for it

If the system you’re purchasing is without any special features, it is a traditional system, and these are the perfect pumps for homes and for many businesses.

Instant Hot Water Recirculating Systems

➞ Instant Hot Water Recirculating Systems

The instant type of recirculating systems will specifically state this aspect in its advertising. As soon as you turn on the hot water faucet, you get hot water immediately, mainly due to the way the pump is made and how it is installed. If you’ve ever seen a hot water tap in the kitchen that people use to make hot tea and other hot beverages, you’ve seen one of these systems.

➞ On-Demand Hot Water Recirculating Systems

On-demand systems are systems that save space and water because they are usually very compact systems that don’t take up a lot of room. They provide endless, consistent, on-demand hot water that can be used for a variety of purposes. They are usually very energy efficient and simple to install, and they are often used in tankless hot water systems.

Hot Water Recirculation Pumps Buying Guide

  • Construction

Naturally, the construction of the unit is going to be an important consideration, so the higher the quality of materials, the more longevity the unit will have. Don’t buy a unit if the parts are made out of plastic or they look cheap but instead choose ones that have stainless-steel parts and ones that look like they are built to last.

  • Connection System

Many connection systems are ¾” NPT, which is normally the size and type that are recommended. When reading any descriptions for the products available, the type and size of the connection system are always listed, so it should be very easy to find a hot water pump with this feature. Online stores always have detailed descriptions of all of their products, which makes it easy to get the exact dimensions of all of the various parts of the product.

  • Pump Size And Flow Rate

The pump size automatically affects the flow rate, and the best recirculating pumps for hot water heaters have variable flow ranges, which means they automatically adjust depending on the usage. This means you never have to worry about the system having too much pressure, and it will always pump the right number of gallons per minute to accommodate your family. A nine-gallon-per-minute pump rate is ideal for most homes.

  • The Horsepower

The horsepower can range from 1/10 to 1/25, and many recirculating pumps have different horsepower speeds than this. Naturally, you’ll want one with the fastest horsepower because they will work a lot faster than the others, which means they are more efficient as well.

  • Temperature Settings

Most recirculating hot water pumps will give you a minimum and maximum fluid temperature, which are the amounts handled by the system. Normally, the range is roughly between 35ᵒF for the minimum and up to around 230ᵒF for the maximum. A wide range is good because it means that the system can handle a multitude of different water temperatures and still work proficiently.

  • Maintenance

The best way to check on the maintenance of a circulation pump is to read online reviews from people who have actually purchased and used the pump. Most of the online stores you’ll end up buying these systems from having real-life customer reviews, and they are the most reliable reviews you’re going to get. If you read enough of them, you can learn about the pros and cons of all of these systems, which can give you a great idea of which one you should purchase.

How To Install A Hot Water Recirculation Pump


There are many different types of hot water recirculation pumps, and they come with all types of features and in all different sizes and capacities. The pros and cons of these systems can be learned simply by doing some research online, but it is also good to start by ascertaining your home or office’s specific needs so that you don’t get a system that doesn’t meet those needs. After all, there is no need to purchase a large, powerful system and spend all that money if this isn’t what you need.

Fortunately, you can find out anything about the systems you’re considering purchasing with a little due diligence on your part, and you can save both time and a lot of money if you do this first.

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