--- product_id: 706182062 title: "UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2\" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types" brand: "zhenyuan" price: "¥39289" currency: JPY in_stock: true reviews_count: 3 url: https://www.desertcart.jp/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible store_origin: JP region: Japan --- # 115V Power Supply Whisper-quiet Motor Built-in Motor Protection UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types **Brand:** zhenyuan **Price:** ¥39289 **Availability:** ✅ In Stock ## Summary > 🔥 Keep your heat flowing, quietly and reliably! 🔥 ## Quick Answers - **What is this?** UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types by zhenyuan - **How much does it cost?** ¥39289 with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible) ## Best For - zhenyuan enthusiasts ## Why This Product - Trusted zhenyuan brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Silent Operation:** Engineered for noise-sensitive environments, ensuring your space stays peaceful without compromising performance. - • **Motor Safety First:** Advanced overload and short circuit protection automatically safeguards your pump, extending its lifespan. - • **Durability You Can Trust:** Robust cast iron and bronze construction paired with IP44 protection for long-lasting, reliable service. - • **Effortless Compatibility:** Seamlessly fits hydronic, radiant, and fan coil heating systems with a universal 1/2" sweat end connection. - • **Energy-Smart Performance:** Runs efficiently at 1/25 HP and 85W, balancing power and low energy consumption for sustainable heating. ## Overview The UP15-18B5 Circulator Pump by ZHENYUAN is a compact, energy-efficient 115V pump designed for hydronic and radiant heating systems. Featuring a durable cast iron and bronze build, whisper-quiet motor, and built-in motor protection, it ensures reliable, long-lasting performance in residential heating applications. ## Features - 【Replacement Part Number】UP15-18B5 59896114. - 【Widely Used】Our UP15-18B5 Circulator Pump is suitable for a wide range of applications, Hydronic heating systems, fan coil heating, and potable water circulation, Can be installed in various plumbing, heating, and cooling systems. - 【Parameters】Voltage: 115V, Power: 1/25 HP, Frequency: 60 Hz, Current: 0.74 A, Power: 85 W, Protection: IP44, Connection: 1/2" sweat end for easy installation. - 【Excellent Performance】Our UP15-18B5 Circulator Pump Has Built-In Motor Protection, Which Prevents the Motor from Being Damaged in Abnormal Conditions Such as Overload or Short Circuit. When the Motor Runs Beyond the Rated Load, It Will Cut off the Power Supply in Time to Protect the Motor from Damage, So That Your Motor Will Last Longer and Perform Better. Our Motor Is Silent and Suitable for Installations That Are Sensitive to Sound. - 【Tips】Before purchasing the part number carefully before purchasing to make sure this is the product you need. ## Technical Specifications | Specification | Value | |---------------|-------| | Asin | B0DQXYVWVQ | | Best Sellers Rank | #157,346 in Tools & Home Improvement (See Top 100 in Tools & Home Improvement) #161 in Power Water Pumps | | Brand Name | ZHENYUAN | | Color | Red | | Customer Reviews | 4.2 4.2 out of 5 stars (4) 4.2 out of 5 stars | | Included Components | Circulator Pump Bronze Circulator Pump | | Manufacturer | ZHENYUAN | | Manufacturer Part Number | UP15-18B5 59896114 | | Material Type | Bronze | | Model Number | UP15-18B5 59896114 | | Number Of Items | 1 | | Number Of Packs | 1 | | Power Source | AC/DC | | Product Style | Circulator Pump | | Specific Uses For Product | Heating systems, Residential use | | Voltage | 115 volts | ## Product Details - **Brand:** ZHENYUAN - **Color:** Red - **Material:** Bronze - **Style:** Circulator Pump - **Power Source:** AC/DC - **Voltage:** 115 Volts - **Manufacturer:** ZHENYUAN ## Images ![UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types - Image 1](https://m.media-amazon.com/images/I/71ZPfWeMDLL.jpg) ![UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types - Image 2](https://m.media-amazon.com/images/I/71GRcF9jktL.jpg) ![UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types - Image 3](https://m.media-amazon.com/images/I/71Yh4d4L56L.jpg) ![UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types - Image 4](https://m.media-amazon.com/images/I/71b4NDF7g9L.jpg) ![UP15-18B5 Circulator Pump Cast iron 1/25 HP Compatible with Grundfos | 59896114 Hot Water Recirculating 1/2" 115V for Radiant Heating/Hydronic Heating/Fan Coil Heating Solar & Other System Types - Image 5](https://m.media-amazon.com/images/I/71r3MOu8XPL.jpg) ## Available Options This product comes in different **Size** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Super quiet *by on Reviewed in the United States March 22, 2026* This pump is incredibly quiet. Great price! ### ⭐⭐⭐⭐ The burning smell wears off after a while and then it works just fine *by on Reviewed in the United States April 24, 2026* The product was very hot after installation and did smell like it was burning. This wore off after four or five days. Now it seem to be working just fine. ### ⭐⭐⭐ Not solder connections *by on Reviewed in the United States October 29, 2025* They advertise sweat or threaded connection, when you put 1/2” copper pipe in fitting, it rattles around and cannot be soldered, so buy the female adapters, 40 year plumber. ## Frequently Bought Together - UP15-18B5 59896114 Circulator Pump 115V, 1/25 HP, 1/2" Sweat End Open System Circulator, Bronze Recirculating Pump, Hot Water Circulator, Compatible with Grundfos,Red - MEASUREMAN Tridicator, Thermo-Manometer, 2-1/2", Silicone Oil Filled, 0-160psi/30-250 deg F, Stainless Steel Case, 1/4" NPT Lower Mount Pressure Gauge - Watts ETX-30 Non-Potable Water Carbon Steel Expansion Tank for Closed Loop Hydronic Heating System Piping, 1/2" MNPT Connection, Tank Volume 4.7 Gallons, Maximum Pressure 75 psi --- ## 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.jp/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible](https://www.desertcart.jp/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible) --- *Product available on Desertcart Japan* *Store origin: JP* *Last updated: 2026-08-15*