The traditional ones usually consume more electricity than an under sink hot water recirculating pump. The answer here is that they won't save you money if the utility bill is of concern, but they are still worth it as they are low-end electricity consumers overall.
Just, how do I choose a circulation pump? 1 GPM = 10,000 BTU/hr, meaning that for every 10,000 BTU's of heat load the circulator must output a 1 gallon per minute flow. Assuming that system calls for 100,000 BTU/hr, a circulator pump should have a minimum 10 Gallons Per Minute flow rate at a given pressure drop.
Watts Premier Instant Hot Water Recirculating Pump System with Built-In Timer
Kit includes a pump with timer with 10' cord, 2 adapters with rubber washers, valve mounting screws, sensor valve, and two 12-inch supply lines
Voltage: 120 volts, Item Weight: 8.5 pounds. Overall Dimension: 6.2 x 6 x 5 inches
Provides hot water at every faucet or shower when needed and helps eliminate wasted water
Easily installs to existing plumbing and is maintenance-free
24-hour programmable timer activates pump when you need it
BESTSELLER NO. 2 in 2023
SEAFLO 33-Series Industrial Water Pressure Pump w/Power Plug for Wall Outlet - 115VAC, 3.3 GPM, 45 PSI
UL 778 & CSA 22.2 Certified
Self-Priming up to 6 vertical feet
3.3 GPM Flow Capacity, 115V AC Current Draw .75 amps (1.2 Max Amps)
Built-in Adjustable Pressure Switch that turns on/off at 45 PSI
Plugs into standard wall outlet with pre-installed power plug
BESTSELLER NO. 3 in 2023
bayite BYT-7A014A DC 12V Solar Hot Water Heater Circulation Pump with DC Power Supply Adapter Low Noise 3M Head 8LPM 2.1GPM
Circulation pump is non-self-priming pump. Max Flow Rate: 2.1GPM, Max Discharge Head: 9.8ft
1/2" Male thread on the pump. The OD of the brass coupler is 10mm. Plug type: 2.1mm x 5.5mm female. NO POWER ADAPTER INCLUDED
Power source: DC 12V(Comes with a AC 110v to DC 12v power adapter), Rated current: 0.7A, Brushless Motor, Low noise: 30db at 1 metre, Service life: 30000 hours
Max circulating water temperature: 100°C/212°F. It's submersible but can't be immersed in hot water exceeding 50°C/122℉
One year warranty: replacement without return
BESTSELLER NO. 4 in 2023
KOLERFLO 115V Water Recirculating Pump 3/4 Inch Circulating Water Pump for Water Heater System(RS15-6 Blue)
Rated power: 93/67/46 W. NPT 3/4 inch (19.05 mm) inlet/outlet. Voltage/Frequency: 110-120V, 60Hz. Max pressure: 145 psi (10 bar),the circulation pump with three-speed control. Flow: 36/29/20 LPM (9.5/7.66/5.28 GPM). Max head: 6/4.9/4 m (20/16/13 ft);Pump housing: Aluminum. Impeller: Corrosion-resistant, composite, PES. Shaft: 45 # steel. Bearing: Carbon axia.
Easy installation, only need a wrench to connect the pump to the pipeline, saving you the cost of plumbers; Instant hot water, waiting for 2-3 minutes in the past, now it takes only 15 seconds to get hot water.
Prevent pipes from freezing in winter, especially for cold winter areas. In addition, if your pipes pass through the floor, the floor will also become warm.
The circulation water pump features high efficiency with low consumption. High temperature resistance, anti-fraying, high flow and leak-tightness. Super silent, environmental friendly,saving energy, running power, reducing the waste of cold water and waiting time, suitable for water scarce areas, such as desert areas.
KOLERFLO circulation water pump RS15-6 Used in Suitable for city buildings, suburban villas, houses, water and pressurized with industrial equipment, air conditioning, boilers, solar circulating water, hot water circulating warm and so on.
BESTSELLER NO. 5 in 2023
bayite BYT-7A015 DC 12V Solar Hot Water Heater Circulation Pump with DC Power Supply Adapter Low Noise 3M Head 8LPM 2.1GPM
Circulation pump is non-self-priming pump. Max Flow Rate: 2.1GPM, Max Discharge Head: 9.8ft
1/2" Male thread on the pump. The OD of the brass coupler is 10mm. Comes with a power adapter
Power source: DC 12V(POWER ADAPTER INCLUDED), Rated current: 0.7A, Brushless Motor, Low noise: 30db at 1 metre, Service life: 30000 hours
Max circulating water temperature: 100°C/212°F. It's submersible but can't be immersed in hot water exceeding 50°C/122℉
One year warranty: replacement without return
BESTSELLER NO. 6 in 2023
Grundfos 59896155, UP15-42F, SuperBrute Recirculating Pump 1/25 HP,115 -Volt, SMALL RED
Ceramic shaft and radial bearings
Carbon axial bearing
Stainless steel rotor can and bearing plate
Corrosion-resistant impeller, Composite, PES
Cast iron pump housing
Water consumption: 155.0 gallons
BESTSELLER NO. 7 in 2023
bayite BYT-7A014 DC 12V Solar Hot Water Heater Circulation Pump Low Noise 3M Discharge Head 2.1GPM
Circulation pump is non-self-priming pump. Max Flow Rate: 2.1GPM, Max Discharge Head: 9.8ft
1/2" Male thread on the pump. The OD of the brass coupler is 10mm. Plug type: 2.1mm x 5.5mm female. NO POWER ADAPTER INCLUDED
Power source: DC 12V(NOT INCLUDED), Rated current: 0.7A, Brushless Motor, Low noise: 30db at 1 metre, Service life: 30000 hours
Max circulating water temperature: 100°C/212°F. It's submersible but can't be immersed in hot water exceeding 50°C/122℉
One year warranty: replacement without return
BESTSELLER NO. 8 in 2023
Aqueon Circulation Pump 950 GPH
Simulates natural river and reef currents by continuously circulating water
Easy-lock suction cup makes installation, adjustments and removal simple
Energy efficient motor increases water movement with less power
Ideal for both freshwater or saltwater applications
Directional water flow positioning with the ball and socket connection point
950 Gallons Per Hour (GPH); Recommended for 55-90 gallon aquariums
BESTSELLER NO. 9 in 2023
Grundfos 99452459 (old part number 595916) UP15-10SU7P/LC Instant Hot Water Comfort Recirculation System 9H with NEW Digital Timer
Retrofit solution- no return line required. Compatible with all Grundfos line cord products
Can save up to 12,000 gallons of year in a typical household
Includes timer, 10ft line cord, thermal bypass valve and hose kit
Installs in less than two hours
Battery back up to maintain settings if power is lost
BESTSELLER NO. 10 in 2023
Watts Premier 0955801 Sensor Valve Kit for Watts Hot Water Recirculating Pump (0955800)
CONTENTS: Includes a sensor valve, two 12 in. supply lines with fittings, and two mounting screws
SPECIFICATIONS: 1/2 inch MPT connections on the Sensor Valve, 12 inch supply lines with 1/2 inch FPT x 3/8 inch FPT connections, and the adapter fittings with 1/2 inch FPT to 3/8 inch MPT
COMPATIBILITY: The 0955801 Sensor Valve Kit ONLY works in conjunction with Watts Instant Hot Water Recirculating System. It is not designed to be used with a dedicated return line to the water heater
EASY INSTALLATION: Easy to install with no additional pumps needed. Additional sensor valve for branched hot water lines
This kit must be used in conjunction with either a 500800 or 500805 Hot water Recirculating Pump. It is NOT designed to be used with a dedicated return line to the water heater
Should You Get A Hot Water Recirculation Pump? The pump will cost you $200 to install, $5.50-$32 to operate, will waste $160-$400 per year and will save you $4-$50 on your water bill.
Joseph Stoddard responds: In the situation you describe, you can get acceptable results without a pump. The hot water "passive recirculation" loop is a technique I learned from an old plumber years ago. ... By providing a return piping run to the hot-water tank, a natural circulation (called a thermosiphon) is created.
Last Updated: 23rd April, 2020. 36. 5 metres ~ 0.5 bar or 50 kPa pressure) The 15 refers to the diameter of the inlet and outlet ports of the pump and the 50 or 60 means 50 or 60 decimetres (5 or 6 metres). Why they use a 15mm port on a pump which is usually fitted to 22mm pipe is another mystery.
Grundfos circulator pumps are designed for best-in-class efficiency with low maintenance. Compared to conventional circulators, they cut energy consumption by up to 80 %, while delivering noise-free performance. Here you can find the right circulator pump for your heating, cooling and hot water recirculation needs.
They look the same and they both create a pressure differential to move liquids, but the difference becomes obvious when you look at the application. irrigation system, it must have enough pressure to operate the irrigation system. A circulator is used to move water in a hydronic heating or cooling system.
Close the tap and quickly remove the garden hose while pointing it down to the ground. This will allow water to flow from the pool to the ground, completing the siphoning process. Rest as you wait for the siphoning hose to empty the pool. The siphoning hose drains the pool water as an alternative to a pump.
Hence, in a recirculating system, the hot water being pumped through the piping always tends to have a higher pressure than the return line to which it connects. If the recirculation system connects to the cold water supply to the water heater, the water can reverse course and go into the cold water supply.
Signs There's a Problem with Your Hot Water Recirculating Pump
A Long Wait for Hot Water. The purpose of a hot water recirculation system is to provide you with hot water faster, so if you find yourself waiting for hot water when you turn on the tap, there could be something wrong with your system. ...
So depending on where you live and how your heating system is designed and controlled, it may be normal for the circulator pump(s) to run continuously.
Feel the Hot Water Heat Piping at the Circulator Pump: You can feel the pipe at the circulator pump - doesn't matter which side - in or out flow - since if the pump is running the pipe will get warm, then hot.