HVAC Retrofits

Lab Results: Big (And Sometimes Fewer) Changes

When you have to individually go verify whether 128 air curtains meant to ensure air balance in the original design’s branch ductwork are still there or not, you’re not having an easy time of it.
One of the worst-performing buildings I’ve had the pleasure to study was a 375,000-sq-ft laboratory building at a Midwest university.
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Case In Point

Department store finds savings up on the roof

When the Dillard’s department store in Naples, FL, reached the point where its rooftop HVAC equipment was in need of replacement, company officials decided to put energy savings as the primary goal.
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Hospital Retrofits For Energy Efficiency

How many health care facilities are limping along in terms of mechanical performance but could be running better than ever with one committed round of treatment?
Our BAS columnist makes a house call to prescribe one method of applying retrofit expertise, including the success story of a hospital with mysteries or maladies that required attention in VAV and chillers, air handling strategies, OR ventilation, and beyond.
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Case In Point

Filtration helps efficiency to soar at Denver Airport

At 35,000 acres, Denver International Airport (DIA) is the largest airport site in North America, and the second largest in the world. More than 53 million passengers travel through the airport annually.
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Case In Point

New lighting, ventilation help ice arena skate to savings

Ice arenas represent some of the most energy-intensive buildings a city can own.
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Case In Point

Florida prison escapes higher costs with desuperheaters

Florida, like most southern states, has an abundance of sunshine throughout the year.
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Trust But Verify

After 40 years and other engineering studies, a large university building still suffered from humidity problems. Our intrepid author dug into the data and the dark corners of the building in pursuit of the culprit — or culprits?
Sebesta Blomberg was commissioned to study a humidity problem for a 400,000–sq-ft library at a university in the Midwest a few years ago.
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Connecting New Boilers To Old Pipes

Combustion air, ventilation, piping, expansion tanks … with these and other factors affecting performance and safety, the boiler swap is not exactly a plug-and-play situation.
Designing a commercial boiler replacement where you were not the original designer or installer might have some hidden dangers that could haunt you for years.
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Case In Point

Kansas hospital achieves big city IAQ, efficiency

When Geary Community Hospital (Junction City, KS) underwent a $34 million expansion, it was promised a cutting-edge HVAC design that would reduce maintenance costs, increase energy efficiency, and provide unprecedented IAQ.
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Building Automation

DDC Or Pneumatic?

Energy savings isn’t the only factor when considering a controls retrofit.
Much of our work involves energy studies and retrofits to commercial buildings.
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This series from longtime columnist and chronic forward-thinker Howard McKew covers a lot of ground -- from retrocommissioning to systems training, on toward checklists for drawings and tips for meeting minutes. Click HERE to be taken to the podcast page!

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