--- product_id: 13806060 title: "Grundfos 595656 1/2-Inch Clip-On Aquastat Control" brand: "grundfos" price: "74450CFA" currency: XOF in_stock: true reviews_count: 10 category: "Grundfos" url: https://www.desertcart.sn/products/13806060-grundfos-595656-1-2-inch-clip-on-aquastat-control store_origin: SN region: Senegal --- # Clip-on easy pipe mount Compatible with timer control 105-115Β°F precise temp control Grundfos 595656 1/2-Inch Clip-On Aquastat Control **Brand:** grundfos **Price:** 74450CFA **Availability:** βœ… In Stock ## Summary > 🌑️ Stay in control, save energy, and never wait for hot water again! ## Quick Answers - **What is this?** Grundfos 595656 1/2-Inch Clip-On Aquastat Control by grundfos - **How much does it cost?** 74450CFA with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/13806060-grundfos-595656-1-2-inch-clip-on-aquastat-control) ## Best For - grundfos enthusiasts ## Why This Product - Trusted grundfos brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Pump Longevity Booster:** Reduces pump runtime by only activating when water temp drops below 105Β°F, extending equipment life. - β€’ **Safety-First Hot Water:** Prevents scalding by avoiding constant 140Β°F circulation, balancing comfort and caution. - β€’ **Effortless Installation:** Clip-on design fits 1/2-inch copper pipes for quick, no-fuss setup even for DIY pros. - β€’ **Universal Compatibility:** Works seamlessly with any brand of recirculation pump and optional timer controls for ultimate flexibility. - β€’ **Smart Temperature Regulation:** Automatically cycles pump between 105-115Β°F to optimize energy use and prevent overheating. ## Overview The Grundfos 595656 1/2-Inch Clip-On Aquastat Control is a precision temperature sensor that clips onto 1/2-inch copper pipes to regulate hot water recirculation pumps. It automatically turns the pump off when water temperature exceeds 115Β°F and back on below 105Β°F, reducing energy consumption, pump wear, and scald risk. Compatible with timer controls and easy to install, it’s the smart upgrade for efficient, safe, and comfortable hot water delivery. ## Description Product Description GRUNDFOS 1/2 STAT 105-115 From the Manufacturer Grundfos 3/4-Inch Clip-on Aquastat Control 595656 automatically turns the circulator off when the temperature in the hot water line exceeds 115 Degrees F. and back on when the temperature falls below 105 Degrees. May be used alone or with timer control. Review: This is the information I could NOT find anywhere else. It is very simple I hope this save someone some time figuring it out. - Although maybe this is obvious, it was not to me, so I thought I would explain to make it clearer. For this exercise let's assume your hot water heater is set to 140 degrees. If your hot water recirculation line has a Grundfos pump and NO thermostat (timer or no timer), your pump will run 100% of the time it is set to be on. It will be circulating 140 degree water through your recirculation line. When your hot water is turned on it will be instantly 140 degrees. The Benefit: Instant 140 degree hot water. The Negative: Wear and tear on your pump & pipes. Danger of users scorching themselves with instant 140 degree water. If your hot water recirculation line has a Grundfos pump and this thermostat (timer or no timer), your pump will run a fraction of the time of the time it is set to be on (only when the water temp is between 105 -110 degrees) . It will be circulating 105 - 110 degree water through your recirculation line. When your hot water is turned on it will be somewhere between 105 -110 and will quickly heat up to 140. The Benefit: This will SAVE wear and tear on your pump & pipes. Users of hot water are less like likely to get scorched by water that is too hot. ENERGY (electricity to run the pump and electricity/gas to heat the water). The Negative: Only that your water will not be instantly 140 degrees. This thermostat is set PERMANENTLY at 105 - 110 degrees and cannot be changed. There is another version of this thermostat that is set PERMANENTLY at 85 - 105 degrees. I tried this version first and although it does save more energy and the pump almost never ran, the water was NOT hot enough for me. The 105 - 110 model is the perfect temperature for me. Review: These work really good & they're even super easy for a handy homeowner to install - An Aqua-stat turns a hot water heater's recirculating pump ON when it's needed & then OFF a few minutes later when the Aqua-stat senses that the pipe that it's clipped onto has gotten warm enough. I've had them on my houses over the years. For best results, it needs to be clipped onto to copper tube that comes out of the wall to bring water down to the recirculation pump with the Aqua-stat hanging down so that its temp sensor is touching the tube where there's always water inside and never air bubbles. That temperature range that it operates within are stated in the part's description. They're easy to install yourself as long as you're comfortable doing a really little bit of wiring. It can be easily used with any brand of recirculation pump, and you can ignore the installation instructions that come in the kit and the 2 extra little pieces that are just for mounting it to the Grundfos (I think) (see those in photo). All you do is slit the existing power cord (UNPLUG IT FIRST!) in-between the 2 wires out near the recirculation pump and then cut & strip just 1 side of the recirculation pump's power cord about 3/8" on each wire. Leave the other side alone. Then, use the 2 tiny wire nuts that came in the kit to connect the Aqua-stat into that wire. It can be wired either way but I was told to connect the white Aqua-stat lead onto the power cord and the black Aqua-stat lead onto the recirculating pump. There's only 2 sizes of these Aqua-stat kits and this smaller one is for most modern homes. The 1/2" in the description is the ID of the copper tubing that it clamps onto, so don't let that confuse you. The OD is about 5/8". Mine must have an internal electric or mechanical issue that's keeping it from working properly so I'm returning it but I'll get another one. πŸ‘ ## Features - Aquastat kit - 1-Inch - Mounts on pipe - May be used with timer - 105 - 115 degrees F ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B004ZWOB9K | | Batteries Included? | No | | Batteries Required? | No | | Best Sellers Rank | #404,646 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #662 in Water Pump Accessories | | Color | Black | | Customer Reviews | 4.2 4.2 out of 5 stars (39) | | Date First Available | October 6, 2006 | | Included Components | GRUNDFOS 1/2 STAT 105-115 | | Is Discontinued By Manufacturer | No | | Item Package Quantity | 1 | | Item Weight | 0.01 ounces | | Item model number | 595656 | | Manufacturer | Grundfos | | Part Number | 595656 | | Product Dimensions | 4 x 0.5 x 0.5 inches | ## Images ![Grundfos 595656 1/2-Inch Clip-On Aquastat Control - Image 1](https://m.media-amazon.com/images/I/51vGH7Opo8L.jpg) ## Customer Reviews ### ⭐⭐⭐⭐⭐ This is the information I could NOT find anywhere else. It is very simple I hope this save someone some time figuring it out. *by M***. on June 30, 2016* Although maybe this is obvious, it was not to me, so I thought I would explain to make it clearer. For this exercise let's assume your hot water heater is set to 140 degrees. If your hot water recirculation line has a Grundfos pump and NO thermostat (timer or no timer), your pump will run 100% of the time it is set to be on. It will be circulating 140 degree water through your recirculation line. When your hot water is turned on it will be instantly 140 degrees. The Benefit: Instant 140 degree hot water. The Negative: Wear and tear on your pump & pipes. Danger of users scorching themselves with instant 140 degree water. If your hot water recirculation line has a Grundfos pump and this thermostat (timer or no timer), your pump will run a fraction of the time of the time it is set to be on (only when the water temp is between 105 -110 degrees) . It will be circulating 105 - 110 degree water through your recirculation line. When your hot water is turned on it will be somewhere between 105 -110 and will quickly heat up to 140. The Benefit: This will SAVE wear and tear on your pump & pipes. Users of hot water are less like likely to get scorched by water that is too hot. ENERGY (electricity to run the pump and electricity/gas to heat the water). The Negative: Only that your water will not be instantly 140 degrees. This thermostat is set PERMANENTLY at 105 - 110 degrees and cannot be changed. There is another version of this thermostat that is set PERMANENTLY at 85 - 105 degrees. I tried this version first and although it does save more energy and the pump almost never ran, the water was NOT hot enough for me. The 105 - 110 model is the perfect temperature for me. ### ⭐⭐⭐⭐⭐ These work really good & they're even super easy for a handy homeowner to install *by J***S on August 20, 2022* An Aqua-stat turns a hot water heater's recirculating pump ON when it's needed & then OFF a few minutes later when the Aqua-stat senses that the pipe that it's clipped onto has gotten warm enough. I've had them on my houses over the years. For best results, it needs to be clipped onto to copper tube that comes out of the wall to bring water down to the recirculation pump with the Aqua-stat hanging down so that its temp sensor is touching the tube where there's always water inside and never air bubbles. That temperature range that it operates within are stated in the part's description. They're easy to install yourself as long as you're comfortable doing a really little bit of wiring. It can be easily used with any brand of recirculation pump, and you can ignore the installation instructions that come in the kit and the 2 extra little pieces that are just for mounting it to the Grundfos (I think) (see those in photo). All you do is slit the existing power cord (UNPLUG IT FIRST!) in-between the 2 wires out near the recirculation pump and then cut & strip just 1 side of the recirculation pump's power cord about 3/8" on each wire. Leave the other side alone. Then, use the 2 tiny wire nuts that came in the kit to connect the Aqua-stat into that wire. It can be wired either way but I was told to connect the white Aqua-stat lead onto the power cord and the black Aqua-stat lead onto the recirculating pump. There's only 2 sizes of these Aqua-stat kits and this smaller one is for most modern homes. The 1/2" in the description is the ID of the copper tubing that it clamps onto, so don't let that confuse you. The OD is about 5/8". Mine must have an internal electric or mechanical issue that's keeping it from working properly so I'm returning it but I'll get another one. πŸ‘ ### ⭐⭐⭐⭐ Product is as described worked exactly as stated. I ... *by B***A on October 28, 2017* Product is as described worked exactly as stated. I had an issue with this when I installed it on my system that others may not, my boiler is a Lochnivar Knight XL and when this controller kicked off the circ pump it sometimes did it before the boiler cycled off. The boiler is still operating and would be starved for feed water and shut down on high inlet or overtemp on outlet. ## Frequently Bought Together - Grundfos 595656 Aquastat Control, Black - Grundfos UP15-18B5 (59896114) Pump, 1/2" Sweat End Open System Circulator, 1/25 HP 115V - Bronze - Grundfos 599388 --- ## Why Shop on Desertcart? - πŸ›’ **Trusted by 1.3+ Million Shoppers** β€” Serving international shoppers since 2016 - 🌍 **Shop Globally** β€” Access 737+ million products across 21 categories - πŸ’° **No Hidden Fees** β€” All customs, duties, and taxes included in the price - πŸ”„ **15-Day Free Returns** β€” Hassle-free returns (30 days for PRO members) - πŸ”’ **Secure Payments** β€” Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** β€” Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.sn/products/13806060-grundfos-595656-1-2-inch-clip-on-aquastat-control](https://www.desertcart.sn/products/13806060-grundfos-595656-1-2-inch-clip-on-aquastat-control) --- *Product available on Desertcart Senegal* *Store origin: SN* *Last updated: 2026-06-01*