08/24/2012

Maximize Your HVAC System with Duct Sealing

Inspect your HVAC system to determine if cleaning and sealing are necessary

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The Inspection, Sealing, and Advanced Cleaning (ISAAC) robot from Carlisle HVAC features a camera, spray nozzle, and 50-200 ft. tether. It can inspect and tighten your ductwork from the inside out.
PHOTO COURTESY OF CARLISLE HVAC

When considering the performance of your HVAC system, pay close attention to indicators of inefficiency. Do you have:

  • Indoor air quality (IAQ) issues?
  • Occupant discomfort and complaints?
  • Visible cracks and leaks in the ductwork?
  • Inefficient fans or chillers that are working too hard?

The common reaction to these problems is to get new equipment. However, upgrades won’t remedy the issues if your ductwork is leaking.

Perform an inspection of the duct system and utilize new technologies to get the most out of your HVAC system.

Impact on Energy Efficiency
Duct leakage in commercial buildings is estimated to be anywhere from 15-40% of cubic feet per minute (CFM). A leaky system uses 25-35% more fan power than a tight system, according to the Lawrence Berkeley National Laboratory report Rationale for Measuring Duct Leakage in Large Commercial Buildings.

“In terms of energy consumption in buildings, HVAC is now the biggest piece of the pie at 39%,” says Frank Forrest, efficient solutions products manager at manufacturer Carlisle HVAC. “When you consider such significant loss on such a heavily consuming piece, it really points out the importance of having an efficient system.”

A common solution is to put new chillers on the building or different drivers on the supply fan to speed it up, Forrest says. The duct system typically gets left out but should be evaluated annually.

“Look at the ductwork first, find out how much leakage you have, and work from there. You may find that new equipment is unnecessary,” Forrest suggests. “Once the duct system is cleaned and sealed, you can more easily consider other components. It’s a trickle-down effect.”

Most don’t even realize the significance of duct leakage or that they should be paying attention to it, agrees Steven G. Liescheidt, president of engineering and consulting firm SPPECSS Consulting, LLC.

“The arguments was that duct systems don’t need sealing because the leakage rate is not that great,” he explains. “It may be time to rethink this old paradigm in light of several ASHRAE requirements.”


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Visit our website today to learn about the design flexibility of a Morton building and the endless possibilities of partnering with our designBUILD team.


Wood construction is both cost and energy efficient. Check out Morton Buildings and our designBUILD team online today to discover all the benefits of post-frame construction.


When choosing a metal-clad building for your next construction project, consider Morton Buildings, Inc., and their designBUILD team, we’ll make your dream a reality.

We Can Help You Reduce Energy by 30%

Our mission is to help our customers manage their buildings' energy costs, improve reliability, and enhance performance while having a positive impact on the environment.
CLICK HERE to find out how.

 

Add highly responsive multi-zone comfort to any building project, in any climate. Our CITY MULTI H2i R2- and Y-Series VRF systems give you flexibility to fit the needs of any building. Enjoy 100% heating capacity at 0°F outdoor ambient, and 85% heating capacity at -13°F outdoor ambient.  For more information, log on to www.mitsubishipro.com


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.


Tennant Company is a recognized leader in designing, manufacturing and marketing solutions that help create a cleaner, safer, healthier world. With thousands of satisfied customers already using award winning ec-H2O technology, why not see what you're missing? Test ec-H2O on your soils in your facility. Get a free demo.

 

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