LOFlo System

The award-winning TACO LOFlo™ system sets a new standard in comfort, ease of design, and Green Building energy performance for small to large buildings.

LOFlo: Advanced hydronic radiant heating and cooling
The Taco LOFlo System is used in hydronic heating and cooling systems to significantly reduce the flow of water. Typically used in radiant panel (ceiling, wall or floor) and chilled beam (passive and active) applications, the technology significantly reduces pump flows and pipe sizes for reduced energy consumption and lower first costs. The LOFlo System also provides precise control of supply water to the terminal, e.g. chilled beam, and precise control of room temperatures.


  • All-in-one injection circulator, zone circulator and common bridge piping
  • Built-in hydraulic separator
  • Only 4 piping connections
  • Greatly reduces installation time
  • Substantial space savings
  • Maintenance free, wet rotor injection and zone circulators
  • Replaceable cartridge
  • Integral flow check
  • Variable speed drive injection and optional
  • Choose from a variety of sizes and capacities for the injection and zone circulator
Sample Some LOFLo Projects Around the Nation:

   Legend for Articles: T = Technical journal article
Project Building
Location Taco Equipment LEED Articles Photos Video
Emergency Operations Center military installation new Alaska, USA chilled beams T,   T
Penn Foundation medical new Pennsylvania, USA KS Series pumps, chilled beams, LOFlo mixing blocks, iWorX control system T,    T
Taco Innovation &
Development Center
office building new Rhode Island, USA commercial equipment yes T,    T
Taco Innovation &
Development Center
office building new Singapore commercial equipment yes
Tallahassee Public
Safety Complex
State offices building new Florida, USA Chilled beams, HS2 software, LoFlo mixing blocks, FI pumps, 1900 pumps, 4900 series, KV pumps T

LOFlo System

Case Studies (8)

TitleSheet NumberEffective Date
Emergency Operations Center06/1/2012
Emergency Operations Center03/01/2013
Innovation and Development Center01/01/2013
Innovation and Development Center03/01/2013
Penn Foundation03/01/2013
Penn Foundation03/01/2013
Penn Foundation100-14006/24/2016
Tallahassee Safety Complex300-5010/26/2015

LOFlo System

Instruction sheet (3)

TitleSheet NumberEffective Date
00-VV: Analog Signal102-14210/01/10
LMB - LOFlo Mixing Block102-41507/01/12
LoadMatch Cartridge Circulators102-11510/01/10

LOFlo System

Chilled Beam/Radiant Cooling Articles (42)

TitleSheet NumberEffective Date
Chilled Beam Basics - HPAC Engineering - 2011-7
Chilled Beam Cooling - Roth, Dieckmann, Zogg, Brodrick - ASHRAE Journal - Sep 2007
Chilled Beams a Warmer Reception - Cunniff - RSES Journal - Mar 2012
Chilled Beams and UFAD: An Energy Efficient Team - HPAC Engineering - May 2012
Chilled Beams in Health-Care Patient Rooms – HPAC Engineering – Nov 2013
Chilled Beams in Hospitals Memorial Hospital - May 2012
Chilled Beams in Hospitals Salford Royall Hospital - Jun 2012
Chilled Beams in Hospitals Sandwell Hospital - Apr 2015
Chilled Beams in Hospitals vs Fan Coils Reeves Journal - Dec 2015
Chilled Beams: A Warm Reception - Cunniff - PM Engineer - Aug 2010
Chilled Beams: Application and Control - Automated Logic Feb 2012
Chilled Beams: Cooling With Less Air - Weidner, Doerger, Walsh - ASHRAE Journal - Dec 2009
Chilled Beams: Design Considerations - Alexander, O'Rourke - ASHRAE Journal - Sep 2008
Chilled Beams: Don't Turn Active Beams Into Expensive Diffusers - ASHRAE Journal - April 2012
Chilled Beams: Efficient Space Humidity Control with Active Chilled Beams - ASHRAE - 2012
Chilled Beams: In Chicago - Engineered Systems - Oct 2008
Chilled Beams: in Labs - Rumsey - ASHRAE Journal - Jan 2007
Chilled Beams: In Labs: Best Practice Guide - USDOE - Jun 2009
Chilled Beams: Looking Up - Schultz - Engineered Systems - May 2007
Chilled Beams: Lower Costs - Rumsey - HPAC Engineering - Jan 2010
Chilled Beams: Market Warms - Turpin - ACHR News - May 2010
Chilled Beams: Taking Hold in US - Rumsey - HPAC Engineering - Jan 2010
Chilled Beams: Wet Heat Technology Brings Comfort to Air Force Base - ACHR News - Mar 2013
Chilled Beams; Designing for Thermal Comfort - Loudermilk - ASHRAE Journal - Oct 2009
Cost of DOAS-Radiant - Engineered Systems – Sep 2013
DOAS and Building Pressurization-Mumma-Ashrea Journal-August 2010
Efficient Space Humidity Control With Active Chilled Beam Systems - ASHRAE Journal - Jan 2012
Hydronic Cooling, Chilled Beams - Plumbing and HVAC - Part 1 - May/Jun 2011
Hydronic Cooling, Cool Ceilings - Plumbing and HVAC - Part 2 - May/Jun 2011
Radiant Ceiling Cooling - Dieckmann, Roth, Brodrick - ASHRAE Journal - Jun 2004
Radiant Ceiling Cooling Panels - Conroy, Mumma - ASHRAE Transactions - 2001
Radiant Ceiling Cooling Panels - Jeong, Mumma - ASHRAE Journal - Oct 2006
Radiant Cooling and Displacement Ventilation - McDonell - The Austin Papers - 2002
Radiant Cooling: High Efficiency - Cunniff - HPAC Engineering - Feb 2009
Radiant Cooling: Thermally Active Floors - ASHRAE Journal Jan 2013 - Part 1
Radiant Cooling: Thermally Active Floors - ASHRAE Journal Jan 2013 - Part 2
Radiant Floor Cooling Systems - Olesen - ASHRAE Journal - Sep 2008
Radiant Floor Heating - Olesen - ASHRAE Journal - Jul 2002
Radiant Slab Cooling for Retail - ASHRAE – Dec 2010
Radiant Solutions - McDonell - Canadian Architect - Mar 2003
Thermally Active Building Design - 2011
Thermally Active Buildings - Ashrae - 2005
WordPress Video Lightbox