--- product_id: 8390179 title: "595444-3/4\" Clip-on Aquastat Kit for UP Series Circulators, 85-105F" brand: "grundfos" price: "$129.58" currency: USD in_stock: true reviews_count: 11 category: "Grundfos" url: https://www.desertcart.us/products/8390179-595444-3-4-clip-on-aquastat-kit-for-up-series store_origin: US region: United States of America --- # 3/4-inch clip-on pipe mount Compatible with timer controls 85-105°F precision range 595444-3/4" Clip-on Aquastat Kit for UP Series Circulators, 85-105F **Brand:** grundfos **Price:** $129.58 **Availability:** ✅ In Stock ## Summary > 🌡️ Cut the waste, keep the warmth — smart recirculation starts here! ## Quick Answers - **What is this?** 595444-3/4" Clip-on Aquastat Kit for UP Series Circulators, 85-105F by grundfos - **How much does it cost?** $129.58 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/8390179-595444-3-4-clip-on-aquastat-kit-for-up-series) ## 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 - • **Durable ABS Construction:** Robust, lightweight design built to last in demanding HVAC environments - • **Energy-Saving Automation:** Reduces pump run-time by up to 90%, slashing electricity costs and carbon footprint - • **Easy Clip-On Installation:** Tool-free 3/4-inch pipe mounting for quick setup and minimal downtime - • **Smart Temperature Control:** Automatically stops pump above 105°F and restarts below 85°F for optimal efficiency - • **Seamless Timer Integration:** Works perfectly with existing timer controls for customized operation schedules ## Overview The Grundfos 595444 Clip-on Aquastat Kit is a precision temperature control device designed for UP Series circulators. It mounts easily on 3/4-inch pipes and automatically regulates pump operation between 85°F and 105°F, significantly reducing energy consumption and pump wear. Compatible with timer controls, this durable ABS unit enhances hot water recirculation efficiency, delivering fast ROI and eco-friendly savings. ## Description From the Manufacturer Grundfos 3/4-Inch Clip-on Aquastat Control 595444 automatically turns the circulator off when the temperature in the hot water line exceeds 105 Degrees F. and back on when the temperature falls below 85 Degrees. May be used alone or with timer control. Review: Great addition to a hot water recirculation system - I can't believe I used my recirculation pump for years without this! Why run the pump when you already have hot water throughout the system? Adding this has reduced pump run-time by probably 90% for us. We do have the hot water and return lines fully insulated, which helps, and live in CA so temps aren't extreme, so your experience may vary. What a huge savings in pump run time and electricity usage. I calculate that this pays for itself in well under a year. It would be nice if you could tune the temperature, but this is really a minor point, perhaps for a future improvement. Review: simple part. - GREAT PART ## Features - Aquastat kit - 3/4-Inch - Mounts on pipe - May be used with timer - 85 - 105 degrees F ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B0029P2WY6 | | Brand Name | Grundfos | | Color | Black | | Customer Reviews | 4.3 4.3 out of 5 stars (83) | | Global Trade Identification Number | 00632514046061 | | Item Dimensions L x W x H | 8"L x 6.8"W x 0.6"H | | Item Weight | 0.15 Pounds | | Manufacturer | Grundfos | | Material Type | Acrylonitrile Butadiene Styrene (ABS) | | Model Number | 595444 | | Power Source | Corded Electric | | Product Style | Circulator | | UPC | 632514046061 | | Unit Count | 1.0 Count | ## Product Details - **Brand:** Grundfos - **Color:** Black - **Global Trade Identification Number:** 00632514046061 - **Item Weight:** 0.15 Pounds - **Manufacturer:** Grundfos - **Material:** Acrylonitrile Butadiene Styrene (ABS) - **Power Source:** Corded Electric - **Product Dimensions:** 8"L x 6.8"W x 0.6"H - **Style:** Circulator - **UPC:** 632514046061 ## Images ![595444-3/4" Clip-on Aquastat Kit for UP Series Circulators, 85-105F - Image 1](https://m.media-amazon.com/images/I/518WLrhlf3L.jpg) ## Questions & Answers **Q: Will this work properly on pex, or does it need to be clipped on copper pipe?** A: Plastic is an insulator, so it does not transfer heat well. It may work, but not as designed. Why not replace a segment of the PEX tubing with a copper fitting? You would have better results. **Q: Does the Aquastat connect directly to leads dedicated "aquastat" leads on the pump or is it in line with the main power supply to the pump?** A: It connects in-line with the main power, there is no relay or other switching at a lower voltage than the line (110V) voltage. **Q: My timer has gone bad in my pump. Can I use this to replace the timer? Makes sense to me.** A: Depending on the application and required temp range needed. If the temp drops enough to allow the contacts to close and start the pump, and opens when the high temp is reached stopping the pump. The location, and temp range of the aqua stat may be very critical to proper operation. **Q: We have a single circulator pump located on the return loop. Don't I want the circulator pump to operate until the water goes below a set temperature?** A: yes, this thermostat is "closed" until the temperature reaches 105 then it opens , the pump stops and when the temperature drops to 85 degrees it closes again to let the pump run. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great addition to a hot water recirculation system *by S***. on March 20, 2015* I can't believe I used my recirculation pump for years without this! Why run the pump when you already have hot water throughout the system? Adding this has reduced pump run-time by probably 90% for us. We do have the hot water and return lines fully insulated, which helps, and live in CA so temps aren't extreme, so your experience may vary. What a huge savings in pump run time and electricity usage. I calculate that this pays for itself in well under a year. It would be nice if you could tune the temperature, but this is really a minor point, perhaps for a future improvement. ### ⭐⭐⭐⭐⭐ simple part. *by E***N on December 12, 2025* GREAT PART ### ⭐⭐⭐⭐⭐ Works like a charm *by M***P on March 21, 2023* Easy instructions and straightforward setup. Runs as it should. ## Frequently Bought Together - Grundfos 595444-3/4" Clip-on Aquastat Kit for UP Series Circulators, 85-105F - GRUNDFOS UP15-29SU/LC 59896776 - Grundfos 529912 GU 125 Bronze Union Flange - 3/4" NPT --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.us/products/8390179-595444-3-4-clip-on-aquastat-kit-for-up-series](https://www.desertcart.us/products/8390179-595444-3-4-clip-on-aquastat-kit-for-up-series) --- *Product available on Desertcart United States of America* *Store origin: US* *Last updated: 2026-05-17*