Taco Bumble Bee variable speed wet rotor circulator pumps feature a high efficiency ECM motor, which uses up to 85% less electricity than standard circulators. A 360° swivel flange makes installation quick and easy. The Bumble Bee’s Delta-T variable speed technology maximizes the overall efficiency of any heating system.

Category Products

  • SKU: TC8090
  • Obsolete

The Taco Bumble Bee model HEC-2 is a multi-function, variable speed, wet rotor circulator with an ECM, permanent magnet motor. Its maximum flow is 25 GPM.

This item is obsolete. It is shown for reference purposes only. Please call (877) 775-7705 for repair parts and replacements.

Category Information

Category Videos

Taco: Bumble Bee High-Efficiency Variable Speed Circulator

Taco: Bumble Bee High-Efficiency Variable Speed Circulator

The new Taco Bumble Bee's high efficiency ECM motor uses up to 85% less electricity than a standard circulator, and its out-of-the box settings and 360° swivel flange makes it a breeze to install. Most importantly, the Bumble Bee's Delta-T variable speed technology maximizes the overall efficiency of your heating system.

Taco: Basics of Hydronic System Solutions Software

Taco: Basics of Hydronic System Solutions Software

Taco Hydronic System Solutions is a dynamic, drag-and-drop technology software that assists HVAC designers in the design of hydronic equipment systems, setting of system parameters and the scheduling of HVAC equipment.

Pump Chart Basics Explained

Pump Chart Basics Explained

In this video, Paul from The Engineering Mindset takes a look at pump charts to understand the basics of how to read a pump chart. We look at basic pump curve, head pressure, flow rate, pump performance, impeller size, efficiency, NPSH, multi-speed pumps, VFD's, rotational speed, voltage, frequency, and phases to help you learn HVAC, HVACR, and mechanical engineering.

Taco: HVAC Pump Fundamentals

Taco: HVAC Pump Fundamentals

This webinar from Taco covers the following topics: pump components, principles of operations, types of impellers, types of designs, discharge arrangements, mechanical seals, closed and open systems, affinity laws, common pump styles, and pump curves.

Taco: Flow, Head, Cv and You Webinar

Taco: Flow, Head, Cv and You Webinar

In this program, you’ll learn how to find the flow needed for a system or zone, how to determine head loss, and how this thing known as Cv can trip you up if you’re not careful.

Taco: Steep Curves, Flat Curves, Variable Curves

Taco: Steep Curves, Flat Curves, Variable Curves

The idea that this 3-speed pump or that variable speed pump is the only pump you’ll ever need is a pure fairy tale and has created more problems than it has solved in residential hydronics. In this program we’ll show you why some pumps have steep curves, why others have flat curves and what happens when you use the wrong one. We’ll also discuss why variable speed pumps aren’t magic, and why the smart contractor knows how to program them to gain the maximum benefit for their systems and customers.