--- product_id: 79632017 title: "Hot Water Recirculating Pump,93W 3/4\" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green)" brand: "kolerflo" price: "5226119β‚«" currency: VND in_stock: true reviews_count: 10 category: "Koler Flo" url: https://www.desertcart.vn/products/79632017-hot-water-recirculating-pump-93w-3-4-npt-circulation-pump store_origin: VN region: Vietnam --- # 93/67/46W 3-speed power 36/29/20 LPM flow rate 3/4 inch NPT easy install Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) **Brand:** kolerflo **Price:** 5226119β‚« **Availability:** βœ… In Stock ## Summary > πŸ”₯ Instant Hot Water, Zero Wait – Upgrade Your Flow Game! πŸ’§ ## Quick Answers - **What is this?** Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) by kolerflo - **How much does it cost?** 5226119β‚« with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/79632017-hot-water-recirculating-pump-93w-3-4-npt-circulation-pump) ## Best For - kolerflo enthusiasts ## Why This Product - Trusted kolerflo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - β€’ **Winter-Proof Your Home:** Prevents pipe freezing and warms floors in cold climates, making your home cozy and protected. - β€’ **Rapid Hot Water Delivery:** Cut wait time from minutes to just 15 secondsβ€”never endure cold water again. - β€’ **Energy-Smart & Eco-Friendly:** Low power consumption with high efficiency reduces your carbon footprint and utility bills. - β€’ **Triple-Speed Precision Control:** Customize your hot water flow with three efficient speed settings for ultimate comfort and energy savings. - β€’ **Robust & Corrosion-Resistant Build:** Aluminum housing with PES composite impeller and steel shaft ensures durability and long-lasting performance. ## Overview The KOLERFLO RS15-6 is a 3/4 inch hot water circulating pump featuring a powerful 3-speed motor (93/67/46W) and a flow rate up to 36 LPM. Designed with corrosion-resistant materials and easy wrench installation, it delivers hot water in just 15 seconds while preventing pipe freezing. Ideal for solar heating systems, residential and industrial use, it combines energy efficiency with robust durability for year-round comfort. ## Description KOLERFLO Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) - desertcart.com Review: Great value and super quiet! - Definitely a nice pump. Very quiet and seems to be plenty powerful to get the hot water circulated. As some others have mentioned, the threaded are 3/4 straight thread. All copper threaded pieces are typically tapered (NPT). The way I got around this was to use dielectric fittings with a 3/4 FIP to 3/4 sweat ends. This does two things for you. One, it gets you the straight threads to get a good seal with teflon tape. And two, it allows you to totally remove the pump without having to cut any pipe. I run the pump using a smart plug hooked to my google home. I set up a custom routine so I just have to say one word and it runs the routine of "Turn on hot water for 1 minute" where the smart plug is named "hot water". Review: Works Great - Update: I've had this for 4 years now and still running great. Original review: I got this to circulate water from my hot water heater to the far fixtures in my house for instant hot water. It works great. Other reviewers posted issues with the pump because they couldn't stop the leaks from the connections. With a lot of plumbing experience, I figured that I was smart enough to overcome those issues. First thing to realize it that the threads are hose threads, not pipe threads so a straight pipe connection would not work. I first purchased an adapter with hose threads thinking that I had quickly whipped the problem - wrong, it leaked bad. I don't know if it was the weak threads or the adapter was warped, but after multiple tries I could not get it to stop leaking. So much for my superior experience. Next I tried a braided hose designed for water heater connections. That worked! The problem with this approach is how to support the pump because the hose will not. I got a long hose, 24", long enough to loop without kinking, and looped it so that the pump rested on top of the water heater. I used the styrofoam packing to cradle it and just let it rest on the water heater and completed the connection to the water supply with another braided line. No problems. I made a timer with a light switch timer linked to an outlet. That also works like a charm at less than $30. See photos. I am considering, however, getting a smart outlet so that I can turn on the pump with an app just when hot water is needed as another reviewer mentioned. ## Features - The recirculating pump uses heavy-duty stainless steel pump head, aluminum pump housing and PES impeller, featuring high resistance to stain, water, corrosion, leakage. Brass fittings and water-stop also included, which enbales several years of good resistance. - 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. - 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. ## Technical Specifications | Specification | Value | |---------------|-------| | ASIN | B07D52LRWK | | Best Sellers Rank | #232,126 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #236 in Power Water Pumps | | Brand | KolerFlo | | Brand Name | KolerFlo | | Color | Rs15/6 Stainless Steel Green | | Customer Reviews | 4.0 out of 5 stars 166 Reviews | | Flow Rate | 5.28 gpm | | Horsepower | 0.13 hp | | Included Components | Boat Pump Body | | Item Dimensions L x W x H | 8.9"L x 6.8"W x 7.1"H | | Item Weight | 4.6 pounds | | Manufacturer | kolerflo | | Manufacturer Part Number | RS15-6 | | Material | Cast Iron, Polypropylene (PP), Stainless Steel | | Material Type | Cast Iron, Polypropylene (PP), Stainless Steel | | Maximum Lifting Height | 0.75 feet | | Model Number | RS15/6 | | Number of Items | 1 | | Number of Packs | 1 | | Power Source | AC | | Product Dimensions | 8.9"L x 6.8"W x 7.1"H | | Product Style | Above Ground | | Style | Above Ground | | UPC | 652054530950 | | Voltage | 115 volts | ## Product Details - **Brand:** KolerFlo - **Color:** Rs15-6 Red - **Item Weight:** 4.6 pounds - **Material:** Aluminum, Corrosion-resistant composite (PES), 45 # steel, Carbon axial bearing - **Maximum Flow Rate:** 13 gpm - **Maximum Lifting Height:** 952 meters - **Power Source:** Solar Powered - **Product Dimensions:** 5.12"L x 5.12"W x 4.92"H - **Style:** Above Ground - **Voltage:** 110 volts ## Images ![Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) - Image 1](https://m.media-amazon.com/images/I/715YCNx0PPL.jpg) ![Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) - Image 2](https://m.media-amazon.com/images/I/71jHS1VnNWL.jpg) ![Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) - Image 3](https://m.media-amazon.com/images/I/717GtiUBfxL.jpg) ![Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) - Image 4](https://m.media-amazon.com/images/I/71AsJGkZdNL.jpg) ![Hot Water Recirculating Pump,93W 3/4" NPT Circulation Pump,Stainless Steel Head for Domestic Water Heater System (RS15-6 Stainless Steel Green) - Image 5](https://m.media-amazon.com/images/I/71LNv5ooAIL.jpg) ## Available Options This product comes in different **Color** options. ## Questions & Answers **Q: Is the RS15-6 Green okay for potable water systems?** A: You'd better try RS15-6 SS Green for potable water system. **Q: Can this recirculate cold water instead of hot water? If i want to use it that way?** A: The question of hot water vs cold water pumps is a question about motor cooling. As a general idea, all hot water pumps can pump cold water regardless of manufacturer. This doesn’t hold for cryogenics though. TLDR - yes you can. **Q: how is it on electrical consumption?** A: The info that came with it says 46 watts at the lowest (of 3) speed settings which is what I use. That's 81 kWh per year, pretty small. the highest speed setting uses 93 watts. I don't notice it on my electric bill but then I have a 3200 SF house (4 bdrm colonial) with air condition in the Northeast. It works great. I used to have cold water and have to wait 1 minute wide open running time to get hot water; now it's instantly warm and hot within 20 seconds. Also, you can put it on a time (or buy one with the timer installed) but I get up often in the middle of the night and like instant warm/hot water. **Q: Are there instructions /operating manual available written in English?** A: Nope! It is cartoon drawn images for instructions. Not much to it. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great value and super quiet! *by T***K on July 13, 2021* Definitely a nice pump. Very quiet and seems to be plenty powerful to get the hot water circulated. As some others have mentioned, the threaded are 3/4 straight thread. All copper threaded pieces are typically tapered (NPT). The way I got around this was to use dielectric fittings with a 3/4 FIP to 3/4 sweat ends. This does two things for you. One, it gets you the straight threads to get a good seal with teflon tape. And two, it allows you to totally remove the pump without having to cut any pipe. I run the pump using a smart plug hooked to my google home. I set up a custom routine so I just have to say one word and it runs the routine of "Turn on hot water for 1 minute" where the smart plug is named "hot water". ### ⭐⭐⭐⭐⭐ Works Great *by K***R on September 23, 2020* Update: I've had this for 4 years now and still running great. Original review: I got this to circulate water from my hot water heater to the far fixtures in my house for instant hot water. It works great. Other reviewers posted issues with the pump because they couldn't stop the leaks from the connections. With a lot of plumbing experience, I figured that I was smart enough to overcome those issues. First thing to realize it that the threads are hose threads, not pipe threads so a straight pipe connection would not work. I first purchased an adapter with hose threads thinking that I had quickly whipped the problem - wrong, it leaked bad. I don't know if it was the weak threads or the adapter was warped, but after multiple tries I could not get it to stop leaking. So much for my superior experience. Next I tried a braided hose designed for water heater connections. That worked! The problem with this approach is how to support the pump because the hose will not. I got a long hose, 24", long enough to loop without kinking, and looped it so that the pump rested on top of the water heater. I used the styrofoam packing to cradle it and just let it rest on the water heater and completed the connection to the water supply with another braided line. No problems. I made a timer with a light switch timer linked to an outlet. That also works like a charm at less than $30. See photos. I am considering, however, getting a smart outlet so that I can turn on the pump with an app just when hot water is needed as another reviewer mentioned. ### ⭐⭐⭐⭐ Working reliably with multiple 15 minute cycles today on plugin timer. *by J***W on August 6, 2020* We are using this quiet, stainless steel pump, rated for potable water as a hot water recirculating pump. We have it plugged into a timer and running several 15 minute cycles at likely times during the day. If you hook it up in the lower floors of the house (basement) there shouldn't be any problem with it loosing its prime. If your plumbing system is accessible or exposed (basement) you can run the hot water in a loop by adding another line rather than using the cold lines for a return. This way, you only need a single check valve just before the hot water returns to the cold line which supplies the water heater. ## Frequently Bought Together - KOLERFLO 3/4 Inch Hot Water Circulating Pump 3-Speed Circulation Water Pump for Solar Heater System(RS15-6 Red) - Leviton 2321 20 Amp, 250 Volt, NEMA L6-20P, 2P, 3W, Locking Plug, Industrial Grade, Grounding - Black-White - Leviton 2320 20 Amp, 250 Volt, Flush Mounting Locking Receptacle, Grounding, Industrial Grade, V-0-MAX, pack of 1, Black --- ## 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.vn/products/79632017-hot-water-recirculating-pump-93w-3-4-npt-circulation-pump](https://www.desertcart.vn/products/79632017-hot-water-recirculating-pump-93w-3-4-npt-circulation-pump) --- *Product available on Desertcart Vietnam* *Store origin: VN* *Last updated: 2026-10-18*