High humidity within homes creates numerous problems. Despite the many home-related humidity issues, there has been little to no measured data available on actual indoor humidity levels in U.S. households. That is why the U.S. Department of Housing and Urban Development (HUD) funded Steven Winter Associates Inc. (SWA) to collect data from homes on interior humidity levels.
In this troubleshooting situation you have inherited a service problem that goes back to last year’s cooling season… residential HVAC equipment that’s seven years old with a lot of history, and repeated trips in response to complaints that this split system that employs a horizontal, attic-installed gas furnace “just won’t keep the home comfortable.”
This article should really be titled “Miracle Closing Technique for the Estimate-Getting Researcher.” As you will read, it’s really not a miracle at all. It’s more common sense. There are many kinds of customers, but the most classic might be the we’re-getting-estimates customer.
Servidyne Inc. announced that it is has been awarded contracts to provide energy efficiency and demand response services for commercial and institutional buildings in the city of San Antonio. The contracts call for the company to provide retro-commissioning and energy audit services. Servidyne also will perform demand response audits.
United States Air Force personnel sought a solution to renovate the makeup air and exhaust ventilation systems to reduce energy usage in a 35,000-square-foot aircraft corrosion control hangar in Oklahoma City. By utilizing Munters energy recovery systems, engineers at the base achieved their mission.
Bob got a call to go to a convention center where the air conditioning system was not working. It was a 75-ton unit with one compressor. The system was many years old, but had been functioning fine, until now. After checking out the unit, an ohm check showed 0 resistance to ground.
The Social Security Administration’s re-introduction of No-Match Letters, along with U.S. Immigration and Customs Enforcement’s skyrocketing issuance of Notice of Inspections of I-9s, evidences the federal government’s increasingly aggressive stance to curb the hiring of unauthorized workers and to penalize employers who do.
The EnOcean Alliance announced that it has signed up its 200th member company, NanoSense. NanoSense develops products using EnOcean and KNX technologies that regulate and optimize air quality inside buildings. Originally created in April 2008 by Distech Controls, EnOcean, Masco, MK Electric, Omnio, and Thermokon, the alliance now counts 200 members from 20 different countries.
The U.S. Department of Energy (DOE) has published a final rule establishing federal test procedures for walk-in coolers and freezers. In the rule, DOE adopted by reference Air-Conditioning, Heating, and Refrigeration Institute (AHRI) Standard 1250 (I–P)–2009, ‘‘Standard for Performance Rating of Walk-In Coolers and Freezers.”
A variable frequency drive (VFD) fails to vary the discharge-air fan speed. A motor overheats and fails prematurely. While each troubleshooting problem in an HVAC system presents its own unique set of circumstances, HVAC professionals may recognize such problems as possible power quality issues.
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