Air Handling Units — Replace or Refurbish? Good Question. Here in New England, we have lots of buildings with old and deteriorating air handling units. In many cases, the clear choice may be to replace the old AHU’s; however, there are many reasons, not just financial, as to why repair or refurbishment alternatives should also… Read more »
Posts Categorized: Air Handling Units
Project Snapshot: John Hannigan Elementary School | Thermo-Composite DX Units
Project Name: John Hannigan Elementary School Architect: Turowski2 Architecture, Inc. Mechanical Engineer: Griffith and Vary Mechanical Contractor: KMD Mechanical Equipment: 5 Rooftop Units with DX Manufacturer: Annexair Size: 6,050, 7,285, 10,200, 4,000, and 6,100 CFM DAC Sales Engineer: Pat Will Project Overview: The students in the northern part of the South End peninsula are… Read more »
Selecting High Plume Dilution Fans
What to Consider When Selecting Fans For Your Application Guest Blogger Keith Lins, MK Plastics When selecting a fan, I prefer to do so in a deductive fashion. In other words, try to understand everything you possibly can about the nature of the application and the details about what the fan is going to be doing…. Read more »
ASHRAE’s Building Energy Quotient in Operation
Announcing New Building EQ Portal ASHRAE In Operation Rating ASHRAE’s Building Energy Quotient (Building EQ) In Operation rating program provides a quick energy analysis that compares your building to similar buildings within the same climate, helps to identify means to improve your building’s energy performance, and provides data on Indoor Environmental Quality. Two different evaluations… Read more »
Project Snapshot: Boston University – Theater Center
Project Name: Boston University – Theater Center Architect: Elkus Manfredi Architects Mechanical Engineer: Vanderweil Mechanical Contractor: TG Gallagher Equipment: Modular Chiller and Boiler Plant – Mechanical Enclosure Manufacturer: Cambridgeport Size: Two 125 ton chillers, three CW pumps, three CHW pumps, two HW pumps, one FC pump, two boilers, all piping and accessories and a fully… Read more »
Coils — Construction vs. Performance
Coils – Construction vs. Performance (Credit to Guest Blogger: Matt Jacobs, Capital Coil & Air) If you have ever dealt with commercial HVAC coils, you have probably come across numerous “industry terms” with little to no explanation as to what these terms actually mean. To further confuse you, some verbiage is specific to the actual construction of… Read more »
Our Process: HVAC Solutions Designed Around You
We’re Different: Your DAC Sales Engineer designs your system, executes the CAD work, coordinates the bidding process, and takes personal responsibility for your job from start to finish. No other firm offers this level of continuity, and it gives our customers a lot more confidence. No matter where you are in the process, we don’t… Read more »
ECM Fan Array – vs. 3 Phase Motor & VFD
We are using more and more ECM Motors and Fans in our applications (both new equipment and retrofit). There are a lot of good reasons to consider them in your ac designs. Below is a side by side comparison and seven good reasons to use ECM Motors and Fans. Permanent Magnets… Read more »
ECM Fan Retrofit with Q-PAC
ECM Motors and Fans have provided a practical solution to most AHU fan retrofits. There are a lot of good reasons to consider them in your HVAC designs. (7 Reasons to Use ECM Motors). Watch how simple the process can be. Related Blog Posts: Custom Air Handling Unit Design | The ECM Fan Array… Read more »
Cooling Coils & Moisture Carryover
Cooling Coils & Moisture Carryover (Credit to Guest Blogger: Matt Jacobs, Capital Coil & Air) Moisture carryover is present on DX or Chilled Water coils where dehumidification happens. Many people do not think it’s a problem. That is, until you have moisture running down duct work or spewing all over the inside of an air handler. … Read more »