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Generations of HVAC professionals have known and trusted Taco to design and build the most reliable products in the industry.
Taco has been one of Emerson-Swan’s premier lines for much of our 75+ year history and it continues to be the cornerstone of our hydronics business. We stock a full line of Taco products in our Randolph, MA warehouse that are always available for immediate pick up.
Taco is currently led by John Hazen White, Jr., whose grandfather founded the company. To this day, John goes to work in the building where his products are made - a rarity in American manufacturing.
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Taco “00"® Cartridge Circulators are rugged, versatile, quick and easy to install. With their self-lubricating design and no mechanical seal, they provide unmatched reliability that makes them maintenance free. Every Taco “00”® circulator features a field-replaceable cartridge that contains all the moving parts. Replacing the cartridge rebuilds the circulator. Field service could not be faster or simpler to perform.
Taco “00”® IFC Cartridge Circulators feature an Integral Flow Check (IFC) that eliminates the additional installation costs that go along with separate in-line flow checks, improves system performance and further reduces maintenance.
Taco “00”® Cartridge Circulators deliver excellent service at fluid temperatures from 40° F (4° C) to 240° F (115° C) and up to 125 PSI maximum working pressure. Their wide variety of configurations, flange orientation, mounting and other options, materials and capabilities provide you with great performance in a broad range of applications
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State of the art performance for hydronic, radiant heat and snowmelt applications. The Taco Bumble Bee® is a wet rotor, variable speed "smart" circulator. The Bumble Bee delivers the ultimate 1-2 punch of electrical savings and system efficiency (fuel usage) cost savings. The unique ECM motor design saves over 50% of the electrical energy compared to conventional fixed speed and 3-speed circulators. When operated in the Delta-T mode it greatly increases the overall efficiency of the boiler so less fuel is used, which equals money saved. The Bumble Bee also increases whole house comfort by continuously adjusting its speed to delivering the right amount of BTU's (heat) at the right time to the right place in the system.
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The Taco Zone Sentry® Zone Valve enhances the overall performance of any zone valve system. The unique patented technology in the Zone Sentry® utilizes a microcircuit based logic to control a gear driven electronic actuator which drives a ball valve based body design. All this adds up to a zone valve that leads the industry in energy efficiency, flow capacity (Cv), shutoff pressure rating, ease of installation, diagnostic capability and the number of valves (12) that can be use on a standard 40VA transformer. Click here for more.

Taco Variable Speed Delta T Circulator's all-in-one design combines a microprocessor based variable speed differential controller with the reliability and convenience of our 00® Cartridge Circulators. Simply dial in the design delta T of the system or zone (from 5 — 50°F) and then sit back and watch the circulator automatically adjust its performance to match the systems ideal BTU/hr output, while conserving energy and eliminating velocity noise. Click here for more.

Taco Zone Controls are contractor-friendly and loaded with advanced features, so you get the complete hydronic system control you want, quickly and easily. Taco has whatever you’re looking for—Switching Relays, Zone Valve Controls, Priority Zoning Circulators and Fan Controls. Together with Taco Zone Valves, Thermostats, the “00” family of circulators and a host of add-on controls, Taco offers the highest quality and most comprehensive selection of zoning products you’ll find anywhere. Click here for more.

The high efficiency Taco 4900 Series Air Separator uses patented PALL ring technology to clear the system of microbubbles, sand, dirt and rust to save money, energy and component wear. PALL rings are used in the processing industry to mix gases with, or separate gases from, liquids. By applying PALL ring technology to hydronic air and dirt separation, the 4900 Series will:
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Circulators
Wet Rotor Circulators
In-line Pumps
Vertical Pumps
Multi-Stage Pumps
Base Mounted/Close Coupled Pumps
Horizontal Split Case
Pump Accessories
Pro-Fit® Parts
Vertical Turbine Pumps
Vertical Split Case
Hydronic Accessories
Buffer Tanks
Zone and Flow Control Valves
WAGS Valve
Pressure & Mixing Valves
Flow Measurement: ACCU-FLO Balancing Valves
Fittings
LoadMatch® Thermostats
Hydraulic Separator
Air Elimination & Control
Air Separators
Air Vents
Expansion Tanks
Heat Transfer Products
U & Straight Tube Heat Exchangers
Plate & Frame Heat Exchangers
Brazed Heat Exchangers
Double Wall Heat Exchangers
Tank Heating Units
Electronic Controls
Zone Controls
Switching Relays
Zone Valve Control
PC600 Series PowerPort Cards
PC700 Series Add-On Power Controls
Priority Zoning Circulator
Low Water Cutoff and Water Feeders
Hydro Air Fan Control
LTR Series Low Water Cutoff
Systems
Variable Speed Drives
The LoadMatch® System
The LOFlo System
Radiant Systems
Domestic Hot Water Recirculation
Solar Water Heating
Design Tools
Hydronic System Solution
TacoNet®
Taco System Analysis Tool
Taco HVAC Load Calculator