CONTACT & SUPPORT
Live Chat: Online Now
0
CART
'/%3E%3C/svg%3E)
Hover image to zoom
 --%3E %3Csvg version='1.1' id='Fill' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23F15C02' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
 --%3E %3Csvg version='1.1' id='Half' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cg%3E %3Cpath fill='%23F15C02' d='M30.05,70.23l3.79-12.01L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1h1.58 L93.71,7.18c-3.58-3.82-8.66-6.23-14.28-6.23H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,5.41,2.22,10.32,5.79,13.88 L30.05,70.23z'/%3E %3C/g%3E %3Cpath fill='%23FBC8B4' d='M93.71,7.18L60.98,39.6H91.2L65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82l5.55-17.59L6.75,93.32 c3.55,3.54,8.44,5.73,13.82,5.73h58.87c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,15.4,97.01,10.69,93.71,7.18z'/%3E %3C/svg%3E){kind=small}
Questions?
Speak with a real person who will go out of the way to help!
Call or text 888-757-4774
Monday – Thursday
8am–7:45pm
Friday
9am–7:45pm
Saturday – Sunday
9am–5:45pm
You May Also Need
Product Reviews
4.67 out of 21 reviews
95% would recommend this product
5 star
86%
4 star
5%
3 star
5%
2 star
0%
1 star
5%
Most Liked Positive Review
Works as it should
In my home the room where the water heater and recirc. pump are located is seldom below 85 degrees. The more common 85-105 degree aquastat doesn't turn the pump on because the room seldom goes below 85 degrees. Bought this 105-115 degree unit to fix the problem. Had to turn up temp. on water heater a bit to get return water temp over 115 to turn pump off. Hard to predict which aquastat you will need; might want to buy both to see which works better for you.
VS
Most Liked Negative Review
 --%3E %3Csvg version='1.1' id='With-RB' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink' x='0px' y='0px' viewBox='0 0 100 100' enable-background='new 0 0 100 100' xml:space='preserve'%3E %3Cpath fill='%23FBC8B4' d='M79.44,0.95H20.56C9.78,0.95,0.95,9.78,0.95,20.56v58.87c0,10.79,8.82,19.61,19.61,19.61h58.87 c10.79,0,19.61-8.83,19.61-19.61V20.56C99.05,9.78,90.22,0.95,79.44,0.95z M65.38,58.24l9.38,29.58L49.69,69.78L24.5,87.82 l9.34-29.6L8.8,39.6l30.73-0.17c0,0,6.98-19.61,10-28.93c0.54,1.36,9.88,29.1,9.88,29.1H91.2L65.38,58.24z'/%3E %3C/svg%3E){kind=small}
Clip broke off
The clip that holds the sensor to the pipe is held onto the sensor with a rivet, that was loose and fell off when it arrived. But it can still be used as a two piece assembly and seems to work as expected otherwise
Showing 1-10 of 21 reviews
Very good product
Excellent service
MCSMac1
North Louisiana
2 years ago
Verified Buyer
Was this review helpful to you?
Simple fix for a simple problem
Need this Aquaset to moniotr temperature on my dedicated recirculation job. Quick delivery, simple install, and does as advertised.
CAPTAHA
Sun Valley, ID
3 years ago
Verified Buyer
Was this review helpful to you?
Perfect complement for the Grundfos circulating pump/timer
Works perfect. New recirculating pump/timer heats the water very fast and the thermostat reduces the pump run time when up to temp.
JS from VC
Valley Center, CA
3 years ago
Verified Buyer
Was this review helpful to you?
Would buy again
Quick delivery, works as expected.
Ted325
Ohio
3 years ago
Verified Buyer
Was this review helpful to you?
Easy to install, works well to control circulation
This sensor turns off the recirculation pump when the loop output has reached the trip temperature. So it becomes practical to leave the timer running longer to provide convenient hot water and the pump only runs when the loop is cool and needs to be heated.
So this both saves energy AND provide more convenient access to hot water.
CAGuy
California
5 years ago
Verified Buyer
Was this review helpful to you?
Worked perfectly
Worked perfectly
Handy
SW Florida
5 years ago
Verified Buyer
Was this review helpful to you?
Grundfos hi temp thermostat
my Grundfos pump wouldn't turn on. I bought the higher temperature thermostat and all works perfectly. I am keeping the old one for winter just in case i have the problem for the opposite reason. wish the wiring was quick disconnect.
scooter
Placerville
5 years ago
Verified Buyer
Was this review helpful to you?
wired in and working
one time purchase, wired in and working as needed
Adrian
Sunbury, Ohio
5 years ago
Verified Buyer
Was this review helpful to you?
Works as it should
In my home the room where the water heater and recirc. pump are located is seldom below 85 degrees. The more common 85-105 degree aquastat doesn't turn the pump on because the room seldom goes below 85 degrees. Bought this 105-115 degree unit to fix the problem. Had to turn up temp. on water heater a bit to get return water temp over 115 to turn pump off. Hard to predict which aquastat you will need; might want to buy both to see which works better for you.
Heaterman
Palo Alto
6 years ago
Verified Buyer
Was this review helpful to you?
Good product
Works well. Does what it is supposed to do.
Jose
Palo Alto, CA
6 years ago
Verified Buyer
Was this review helpful to you?
Product Q&A
5 Questions5 Questions
Q: Can this control be used with a zone valve on 24 volt instead of a pump on 120 volt?
Asked by EMD360 12 years ago
Add your answer
Verified Reply- Supplyhouse Staffa standard clip on aquastat would be a better choice. http://www.supplyhouse.com/Grundfos-595443-1-2-Clip-On-Aquastat-Kit-for-UP-Series-Circulators-5-8-OD-Piping-85F-105F
Was this review helpful to you?
Q: Is there a way to tell if this thermostatic control (595657) is still functioning properly? I've had it for 6+ years and now it seems that the circulation pump runs continuously. The copper pipe it's clipped to is hot and the hot water heater is set on "C", which is considered 150 degrees. That's well over the temperature in which the thermostat is suppose to shut the pump off.
Asked by Pedee 14 years ago
Add your answer
-
The best way I've found is to use a continuity tester (electrical) or a digital multimeter with continuity check. These tests are done with the power off!! Expose the 2 wire leads that come from the t-stat control. Above temperature there should be no continuity between the wires (switch is open). Below temperature there should be continuity between the wires (switch is closed). Remove the t-stat control from the pipe and allow it to cool - check for continuity, there should be if the device is working correctly. Warm the device with a heat gun or hair dryer. At some point, the device should "open up" (lose continuity) if the device is working correctly. Sounds like your device is no longer "opening up". Hope this helps. Good luck.
Was this review helpful to you?
Q: Does this switch turn on only between 105 and 115 degrees? For instance if the water in the pipe is heated to 150 degrees does the switch stay on until the boiler shuts off and it cools down below 115 degrees?
Asked by Jeff 14 years ago
Add your answer
Verified Reply- PexSupply StaffThe switch turns the circulator off as soon as water temperatures reach 115°F. It does not turn the circulator back on until they fall to 105°F.
Was this review helpful to you?
Q: what is the degrees
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffThis unit is rated at 105°F - 115°F.
Was this review helpful to you?
- Anonymous
The pump switches on at 85+6 degrees F and will switch off at 105+5 degrees F.
Was this review helpful to you?
Q: Can you get this clip-on thermostat that connects to the UP 15-10 SU7P TLC with a 3/4" clip. My pipe is 3/4" coming out of the water heater.
Asked by 15 years ago
Add your answer
Verified Reply- PexSupply StaffYes, it is part 595657 ( http://www.pexsupply.com/Grundfos-595657-3-4-Clip-On-Thermostatic-Control-for-Grundfos-UP-Series-Circulators ).
Was this review helpful to you?
Free Shipping
On orders over $99
We offer flexible shipping and scheduling options, up-to-date delivery estimates, and free ground shipping on any order over $99 to make sure your order gets to you on-time, for less.
Shipping PolicyEasy Returns
Returning items is as simple as 1-2-3
Ordered the wrong product? Item damaged in transit? Our 3-step process makes returning products easy – even up to a year after purchase – with no restocking fees on returns made within 90 days.
Return Policy