Taco vr1816 Ecm High-efficiency Wet Rotor Circulator Variable Speed

Product Description

The Taco vr1816 is a variable speed ECM high-efficiency wet rotor circulator built for hydronic heating systems. It is designed for HVAC professionals, plumbers, and hydronics contractors who need a reliable, energy-saving solution for residential and light commercial heating applications. The vr1816 uses electronically commutated motor (ECM) technology to reduce electrical consumption by up to 85% compared to standard fixed-speed circulators. This means lower operating costs for the end user and a more sustainable system overall. The wet rotor design eliminates the need for external bearings and seals, reducing maintenance requirements and extending the service life of the pump. Installation is straightforward, and the intuitive dial interface makes setup fast and simple on the job site. The vr1816 supports three operating modes to match any system configuration. In Fixed Speed Mode, the technician can fine-tune the flow rate to precisely match design load conditions. The speed is infinitely variable between minimum and maximum settings, making it an ideal choice for zoning systems that use multiple circulators. In Constant Pressure Mode, the circulator maintains a steady pressure differential across the system as the heating load rises or falls. This mode works best in systems that use zone valves to control flow. In Proportional Pressure Mode, the unit adjusts pressure in proportion to changes in heating load. Flow rate shifts in direct relationship to pressure differential changes, making this mode the preferred option for panel radiator systems equipped with thermostatic radiator valves (TRVs). The vr1816 also features Sure Start, an automatic unblocking and air purging mode that activates on startup to clear airlocks and keep the system running smoothly. With six preset pressure settings and infinitely variable fixed speed control, this circulator gives technicians precise control over system performance. It is a practical, durable upgrade for any hydronic heating retrofit or new installation.

• ECM motor technology cuts electrical use by up to 85% versus conventional circulators
• Three operating modes: Fixed Speed, Constant Pressure, and Proportional Pressure for full system flexibility
• Sure Start automatic unblocking and air purging mode prevents airlock issues on startup

Product Highlights

The Taco vr1816 delivers high-efficiency ECM performance with simple dial-based controls, making it a reliable choice for hydronic zoning systems using circulators, zone valves, or thermostatic radiator valves. Its wet rotor design and variable speed capability reduce energy costs and installation complexity on every job.

Product Information

Standard Information

• Brand: TACO
• Manufacturer Part Number: vr1816

Technical Specifications

• Motor Type: ECM (Electronically Commutated Motor)
• Rotor Type: Wet Rotor
• Energy Savings: Up to 85% less electricity versus conventional circulators
• Speed Control: Infinitely variable between minimum and maximum settings
• Pressure Presets: 6 presets
• Operating Modes: Fixed Speed, Constant Pressure, Proportional Pressure
• Startup Feature: Sure Start automatic unblocking and air purging