---
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: "€ 272.20"
currency: EUR
in_stock: true
reviews_count: 3
category: "Zhenyuan"
url: https://www.desertcart.hr/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible
store_origin: HR
region: Croatia
---

# 115V Power Supply Ultra-Quiet Operation 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:** € 272.20
**Availability:** ✅ In Stock

## Summary

> 🔧 Power your space quietly and confidently with UP15-18B5!

## 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?** € 272.20 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/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

- • **Robust Durability:** Cast iron and bronze construction built to withstand demanding heating and cooling systems.
- • **Seamless Compatibility:** Direct replacement for Grundfos UP15-18B5, ensuring hassle-free upgrades.
- • **Smart Motor Protection:** Automatic overload and short circuit cutoff extends motor life and reliability.
- • **Effortless Installation:** Standard 1/2" sweat end connection designed for quick, professional plumbing integration.
- • **Whisper-Quiet Performance:** Operates silently, perfect for noise-sensitive environments and professional spaces.

## Overview

The UP15-18B5 Circulator Pump is a 1/25 HP, 115V bronze and cast iron pump designed for hydronic heating, fan coil, and potable water circulation systems. Compatible with Grundfos models, it features ultra-quiet operation, built-in motor protection against overload and short circuits, and a user-friendly 1/2" sweat end connection for easy installation. Ideal for professionals seeking reliable, durable, and silent pump performance.

## Description

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 - desertcart.com

Review: Super quiet - This pump is incredibly quiet. Great price!
Review: The burning smell wears off after a while and then it works just fine - 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.

## 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 | #236,089 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #250 in Power Water Pumps |
| Brand | ZHENYUAN |
| Brand Name | ZHENYUAN |
| Color | Red |
| Customer Reviews | 4.2 out of 5 stars 4 Reviews |
| Included Components | Circulator Pump Bronze Circulator Pump |
| Manufacturer | ZHENYUAN |
| Manufacturer Part Number | UP15-18B5 59896114 |
| Material | Bronze |
| Material Type | Bronze |
| Model Number | UP15-18B5 59896114 |
| Power Source | AC/DC |
| Product Style | Circulator Pump |
| Specific Uses For Product | Heating systems, Residential use |
| Style | Circulator Pump |
| 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)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Super quiet
*by T***N on 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 M***O on 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 D***. on 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

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**Shop now:** [https://www.desertcart.hr/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible](https://www.desertcart.hr/products/706182062-up15-18b5-circulator-pump-cast-iron-1-25-hp-compatible)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-08-14*