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IT'S NOT THE HEAT, IT'S THE HUMIDITY

Humidity control was the problem that originally spurred the need for air conditioning. Lack of humidity control in hot, humid climates, in IAQ Solutions Humidityparticular, can lead to mold growth and other moisture-related problems. High indoor humidities can lead to health and comfort problems.

Modern air conditioners dehumidify as they cool; you can see that by the water that drains away, but this dehumidification is incidental to their main job of controlling temperature. They cannot independently control both temperature and humidity.

In hot, humid climates the incidental dehumidification that occurs may not always be enough to keep the indoor humidity conditions acceptable. (ASHRAE recommends roughly a 60% relative humidity maximum at 78F.) The maximum dehumidification happens not at the hot times of the year—when the air conditioner is running a lot—but at mild times of the year when the air conditioner runs very little.

Although there are some leading edge air conditioning systems that promise to independently control humidity, conventional systems may not be able to sufficiently control the problem and can cause comfort or mold problems in certain situations. Some current high-end systems have enhanced dehumidification, but when the existing system cannot sufficiently dehumidify, it may be necessary to buy a stand-alone dehumidifier.
 
There are things that consumers can do to lessen the need for dehumidification:

Do not set your thermostat to the “fan on” position. In this position the fan blows air all the time whether your cooling system is running or not and one key impact is that a lot of the moisture your system just took out of the air, will be blown back into the house before it can drain way.

Use exhaust fans during moisture-producing activities. Cooking, bathing, washing, and similar activities produce a lot of moisture inside the home. Exhaust that moisture directly outdoors using a fan. Similarly, avoid drying clothes indoors except with a clothes dryer that is exhausted directly outdoors.

Do not open windows or use ventilative cooling when it is too humid outside

Full Story at ASHRAE https://www.ashrae.org/resources–publications/free-resources/top-ten-things-about-air-conditioning 

 

  • John P. Lapotaire, CIEC
  • Certified Indoor Environmental Consultant
  • Indoor AIr Quality Solutions, IAQS
  • Microshield Environmental Services, LLC
  • www.Microshield-ES.com  www.CFL-IAQ.com
  • www.FloridaIAQ.com
  • http://www.microshield-es.com/moldinspectiontesting.html 
  • http://www.orlandomoldinspection.us/
  • http://www.microshield-es.com/nuisanceodor.html
  • http://www.floridaiaq.com/moldremediationprotocol.html
  • http://www.floridaiaq.com/moldclearancetesting.html 
  • - See more at: http://activerain.com/blogsview/4232131/ashrae-releases-revised-version-of-iaq-standard#sthash.bpKJiWDm.dpuf

     


     

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    Thu, 11 Apr 2019 13:00:00 -0400


    EPISODE 541: Jim Harris, Sr. – Chairman & Founder Concepts4 & Janitronics Co-founder & Chairman of CIRI – Cleaning, Success & Science
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    Fri, 05 Apr 2019 16:56:00 -0400


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    This week we look forward to our interview with Jim Harris, Sr., a consultant, trainer, corporate executive, and entrepreneur. Jim has had a productive and successful career in the cleaning industry for 45 years. Jim started Janitronics Facility Services in 1972 as a local cleaning service. The company has since evolved into a seven branch, comprehensive cleaning, maintenance and management service, but has a new approach: Thinking small; they specialize in creating, and sustaining a healthy indoor environment utilizing state of the art, effective ‘cleaning systems’ based on validated cleaning science research. Mr. Harris is also co-founder and chairman of the Cleaning Industry Research Institute (CIRI). CIRI is the clearinghouse for unbiased, peer-reviewed technical information and research about the science of cleaning or restoration of the indoor environment. Jim Harris has done what others have only dreamed of while building a profitable company. His company was built first and foremost on the science of cleaning. The company uses state-of-the-art equipment and processes to clean for health. To increase productivity, Janitronics developed its’ SysteamCleaning (TM) concept, utilizing state of the art workflow based on systems thinking and high performance standards. In 2000 the leadership of the company completed a succession transition to Jim Harris, Jr. and is headquartered in Albany, N.Y. They are not just dumping wastebaskets and cleaning restrooms. They pride themselves on cleaning a work environment to maintain a high health standard; focused on properly removing bio-contaminants and airborne particles. Janitronics has been successful in transforming cleaning into a science.

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    EPISODE 540: Rachel Adams, PhD – Research Scientist at UC Berkeley & California Department of Public Health Research to Practice – Moisture Measurement and Mold
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    Fri, 29 Mar 2019 16:54:00 -0400


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    EPISODE 537: Parham Azimi, PhD – Research Associate Illinois Institute of Technology – New Research on Particulate Matter & Mortality
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    EPISODE 534: Corbett Lunsford - The Home Performance Worskshop & The Worlds Highest Performance Tiny House on Wheels!
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    Thu, 07 Feb 2019 15:56:00 -0500


    EPISODE 533: Open Mic - Topics for this week include: Current Events, Certification, Standards, Training, Networking & Resources
    Today we are going to try something new and if it works we will make it a regular part of the line up. We are going to throw out some topics, invite a few friends and have a discussion about IAQ, disaster restoration and building science. We also encourage listeners to text in your questions or comments. Today we expect to hear from Jay Stake, Eric Shapiro, Carl Grimes, John Downey and Pete Consigli. The topics we will throw out for discussion will come from the list in this week’s show title. We have some of the leaders of the industry join us every week so lets take advantage of that and start a conversation.

    Thu, 07 Feb 2019 15:56:00 -0500
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