Fresh Air Ventilation Systems, LLC Presents
Dr. Richard Corsi Professor, Department of Civil, Architectural and Environmental Engineering President of Indoor Air 2011...
I ndoor Air Pollution:  Is my house  killing   me? <ul><li>Hosted by Kurt T. Johnson </li></ul><ul><li>HRAI Certified Desi...
 
Three Converging Trends <ul><li>Construction </li></ul><ul><li>Chemicals & other pollutants </li></ul><ul><li>Couch Potato...
Changes in Construction Old houses & buildings leaked a lot of air
1973 Oil Embargo Changed it
Note:  As a result of the 1973 oil embargo, national energy conservation measures called for a reduction in the amount of ...
The Apple & Atari  Arrive in the late 70’s
Trend number 2 <ul><li>Americans spend 89% of our time indoors </li></ul><ul><li>6%  traveling </li></ul><ul><li>5% outdoo...
#3 Demand for Easy of Life <ul><li>Wall-to-wall carpet </li></ul><ul><li>Cleaners </li></ul><ul><li>Air fresheners </li></...
Pollution Sources
What Happened in the 80s & 90s <ul><li>Sick Building Syndrome – 30% of new or remodeled buildings have excessive complaint...
More Bad News The International Agency for Research on Cancer and the World Health Organization have concluded that  80% o...
Asthma becomes Nation Epidemic <ul><li>Asthma cases triple </li></ul><ul><li>1980 – 6.8 million </li></ul><ul><li>1996 – 1...
2005 Surgeon General Advisory <ul><li>Millions of homes & apartments and 1 in 5 schools have indoor air quality problems <...
Cleaning Chemical Studies <ul><li>European women using spray cleaners 4 days a week were more than twice as likely to have...
<ul><li>Radon kills over 20,000 per year in the US  </li></ul><ul><li>1 in 15 Homes have high radon levels at or above 4 (...
Mold and other Particulates <ul><li>60,000 deaths each year caused by particulate matter  source American Heart Associatio...
If so,.. What can we do? Does this concern you?
2 Effective Strategies <ul><li>Source Control & Ventilation </li></ul><ul><li>Limit the pollutants from coming in </li></u...
Ventilation Natural vs. Mechanical <ul><li>We need to start thinking about a house as a system </li></ul>
2 Main Driving Forces of Air <ul><li>High Pressure to low pressure </li></ul><ul><li>Warm air rises Cold air drops (Stack ...
Natural (wind & stack) & Mechanical
What can be trusted  to consistently work? <ul><li>Natural Ventilation </li></ul><ul><li>Wind is inconsistent </li></ul><u...
Mechanical Ventilation is Superior but which one…. <ul><li>Exhaust only vs. Balanced </li></ul><ul><li>Which one is really...
Very Important Questions? <ul><li>What room do you spend the most time in? </li></ul><ul><li>And your children? </li></ul>...
Formaldehyde  found in baby cribs <ul><li>Many baby nursery furnishings emit formaldehyde. </li></ul><ul><li>A baby sleepi...
 
Does Exhaust only really work? <ul><li>Bath and kitchen fans have been used for many years </li></ul><ul><li>Do they reall...
Exhaust Ventilation <ul><li>Exhausts air in bathroom and kitchen. </li></ul><ul><li>No control of fresh air </li></ul><ul>...
Air Moves from High to Low Pressure <ul><li>Since air out is replaced by air coming back in….  </li></ul><ul><li>So…   Whe...
Designed and Balanced Ventilation <ul><li>Ventilates all rooms </li></ul><ul><li>Controls air flow </li></ul><ul><li>Heat ...
Types of Ventilators <ul><li>HRV (Heat Recovery Ventilators) </li></ul><ul><li>Heat recovery up to 95% </li></ul><ul><li>R...
How Air Exchangers Work
A core with lots of surface area transfers heat Pollutants and moisture are removed and heat is recovered
Ventilation and  Filtration <ul><li>captures 99.97% of all dust and particles even those as small as 0.3 micron  (150 th  ...
All of the data presented so far has been from houses built based on the changes of the late 70’s and 80’s. Not very tight...
 
 
What is a “tight” house? “ Home Building Envelope Air Leakage Area. The median ACH50 (air changes per hour at 50 pascals) ...
Signs and Symptoms of Air Pollution <ul><li>Headaches </li></ul><ul><li>Congestion </li></ul><ul><li>Watery Eyes </li></ul...
Please share this video with someone you care about
Fresh Air Ventilation Systems, LLC 155 Spring St. Lewiston, ME 04240 207 786-9400 [email_address] www.freshairventilation....
Pollutants listed by the EPA <ul><li>Asbestos </li></ul><ul><li>Biological Pollutants </li></ul><ul><li>VOCs  (volatile Or...
Heat and Moisture Important Principles to remember <ul><li>Heat always flows to cold </li></ul><ul><li>Moisture flows from...
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Is My House Killing Me?

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3 Converging trends causing health care crisis

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Is My House Killing Me?

  1. 1. Fresh Air Ventilation Systems, LLC Presents
  2. 2. Dr. Richard Corsi Professor, Department of Civil, Architectural and Environmental Engineering President of Indoor Air 2011 http://www.esi.utexas.edu/outreach/ols/lectures/Corsi/ U. S. Dept of Environmental Protection www.epa.gov/iaq California Air Resource Board www.arb. ca .gov American Lung Association www. lung usa.org Indoor Environment Connections www.ie connections .com World Health Organization www.who.int Venmar Ventilation www.venmar.ca With special thanks to the following contributors & sources of information
  3. 3. I ndoor Air Pollution: Is my house killing me? <ul><li>Hosted by Kurt T. Johnson </li></ul><ul><li>HRAI Certified Design and Installation of Residential Mechanical Ventilation Systems </li></ul><ul><li>Board Member of The Maine Indoor Air Quality Council </li></ul>
  4. 5. Three Converging Trends <ul><li>Construction </li></ul><ul><li>Chemicals & other pollutants </li></ul><ul><li>Couch Potatoes </li></ul>
  5. 6. Changes in Construction Old houses & buildings leaked a lot of air
  6. 7. 1973 Oil Embargo Changed it
  7. 8. Note: As a result of the 1973 oil embargo, national energy conservation measures called for a reduction in the amount of outdoor air provided for ventilation from 15 to 5 cfm per person
  8. 9. The Apple & Atari Arrive in the late 70’s
  9. 10. Trend number 2 <ul><li>Americans spend 89% of our time indoors </li></ul><ul><li>6% traveling </li></ul><ul><li>5% outdoors </li></ul>Klepeis, N.E., et al 2001
  10. 11. #3 Demand for Easy of Life <ul><li>Wall-to-wall carpet </li></ul><ul><li>Cleaners </li></ul><ul><li>Air fresheners </li></ul><ul><li>Pesticides </li></ul><ul><li>Personal care products </li></ul><ul><li>Much more </li></ul>Dr. Richard Corsi, University of Texas
  11. 12. Pollution Sources
  12. 13. What Happened in the 80s & 90s <ul><li>Sick Building Syndrome – 30% of new or remodeled buildings have excessive complaints - source World Health Organization (WHO) 1984 </li></ul><ul><li>Centers for Disease Control and Prevention (CDC) </li></ul><ul><li>% of all complaints relating to Indoor Air Quality </li></ul><ul><li>1978 = 0.5% </li></ul><ul><li>1990 = 52% </li></ul><ul><li>Dramatic increase in Respiratory diseases </li></ul>
  13. 14. More Bad News The International Agency for Research on Cancer and the World Health Organization have concluded that 80% of all cancers are attributed to environmental r ather than genetic factors, including exposure to carcinogenic chemicals, many of which are found in household cleaning products. Is Vinyl Flooring Causing Autism? Scientists find &quot;baffling&quot; link between autism and the phthalates off-gassed by vinyl flooring, and other indoor air contaminants .
  14. 15. Asthma becomes Nation Epidemic <ul><li>Asthma cases triple </li></ul><ul><li>1980 – 6.8 million </li></ul><ul><li>1996 – 14.6 million </li></ul><ul><li>1999 – 17.3 million </li></ul><ul><li>2005 – 22.2 million </li></ul><ul><li>Asthma Deaths also triple </li></ul><ul><li>1977 – 1,674 </li></ul><ul><li>1998 – 5,438 </li></ul><ul><li>Leading killer of young children!!!! </li></ul>Asthma increase a mystery April 9, 2002 - source: by Ben Lieberman / National Review online Costs 5.5 to 14.5% of family income to treat an asthmatic child
  15. 16. 2005 Surgeon General Advisory <ul><li>Millions of homes & apartments and 1 in 5 schools have indoor air quality problems </li></ul><ul><li>7.7% school age children with asthma </li></ul><ul><li>Asthma = 14 million missed school days </li></ul><ul><li>Trend has continued to increase </li></ul><ul><li>8.9% in 2009 </li></ul><ul><li>Maine – highest rate in the United States </li></ul><ul><li>10% of adults </li></ul><ul><li>10.7% of children </li></ul>
  16. 17. Cleaning Chemical Studies <ul><li>European women using spray cleaners 4 days a week were more than twice as likely to have asthma </li></ul><ul><li>Women working in domestic cleaning </li></ul><ul><li>46 - 109 % more likely to develop asthma </li></ul><ul><li>Source National Jewish Health Feb 2009 </li></ul>
  17. 18. <ul><li>Radon kills over 20,000 per year in the US </li></ul><ul><li>1 in 15 Homes have high radon levels at or above 4 (pCi/L) </li></ul><ul><li>Cancer risk at 4pCi/L = 1 in 44 </li></ul><ul><li>In Maine, the average house is </li></ul><ul><li>at or above 4 pCi/L. </li></ul><ul><li>Source EPA </li></ul>
  18. 19. Mold and other Particulates <ul><li>60,000 deaths each year caused by particulate matter source American Heart Association </li></ul><ul><li>Exposure to air pollution contributes to the development of cardiovascular diseases (heart disease and stroke). </li></ul>
  19. 20. If so,.. What can we do? Does this concern you?
  20. 21. 2 Effective Strategies <ul><li>Source Control & Ventilation </li></ul><ul><li>Limit the pollutants from coming in </li></ul><ul><li>Remove the ones that do get in </li></ul>
  21. 22. Ventilation Natural vs. Mechanical <ul><li>We need to start thinking about a house as a system </li></ul>
  22. 23. 2 Main Driving Forces of Air <ul><li>High Pressure to low pressure </li></ul><ul><li>Warm air rises Cold air drops (Stack effect) </li></ul><ul><li>Very Important Principle </li></ul><ul><li>Air out is equal to air in </li></ul>
  23. 24. Natural (wind & stack) & Mechanical
  24. 25. What can be trusted to consistently work? <ul><li>Natural Ventilation </li></ul><ul><li>Wind is inconsistent </li></ul><ul><li>Winter vs. Summer </li></ul><ul><li>No Control </li></ul><ul><li>100% heat loss </li></ul><ul><li>Tight house has few holes and where? </li></ul><ul><li>Mechanical Ventilation </li></ul><ul><li>Air flow Controllable </li></ul><ul><li>Properly Designed will vent every room </li></ul><ul><li>Heat Recovery (with Air Exchanger) up to 95% of heat from exhaust air </li></ul>
  25. 26. Mechanical Ventilation is Superior but which one…. <ul><li>Exhaust only vs. Balanced </li></ul><ul><li>Which one is really effective when it comes to complete ventilation of entire house? </li></ul><ul><li>Does it remove the pollutants from all rooms? </li></ul>
  26. 27. Very Important Questions? <ul><li>What room do you spend the most time in? </li></ul><ul><li>And your children? </li></ul>“ Bedtime is anything but pleasant for people with allergies and asthma since that’s very often the time when symptoms worsen.” Source Amer. Lung Assoc.
  27. 28. Formaldehyde found in baby cribs <ul><li>Many baby nursery furnishings emit formaldehyde. </li></ul><ul><li>A baby sleeping in a nursery furnished with a high- emission crib and changing table may face an increased risk of developing allergies and/or asthma. </li></ul><ul><li>Formaldehyde exposure can cause cancer in the long term. “… 2 ppb (parts per billion)” </li></ul><ul><li>6 tested furnishings released “enough formaldehyde to contaminate an entire home with levels of formaldehyde greater than this threshold. </li></ul>Environment California 2008 This is just 1 of the many house components releasing formaldehyde and other chemicals
  28. 30. Does Exhaust only really work? <ul><li>Bath and kitchen fans have been used for many years </li></ul><ul><li>Do they really ventilate the bedrooms? </li></ul><ul><li>Are they effective ventilating every room? </li></ul>Let’s see….
  29. 31. Exhaust Ventilation <ul><li>Exhausts air in bathroom and kitchen. </li></ul><ul><li>No control of fresh air </li></ul><ul><li>May not be used properly </li></ul><ul><li>Depressurizes building </li></ul><ul><li>May cause back drafting </li></ul><ul><li>May pull pollutants in from garage </li></ul><ul><li>100% heat loss </li></ul><ul><li>Can be noisy </li></ul>
  30. 32. Air Moves from High to Low Pressure <ul><li>Since air out is replaced by air coming back in…. </li></ul><ul><li>So… Where does the air come in?.... </li></ul><ul><li>Front door </li></ul><ul><li>Basement </li></ul><ul><li>Garage </li></ul><ul><li>Flue </li></ul><ul><li>Other not in use vents </li></ul>Where does it go? . . . Right to the low pressure (bathroom, kitchen) Question? How does the bedroom get fresh air? We really don’t know…. Because every house is different. This method only hopes to ventilate the bedroom but there is no direct control. This is really a “hope so” method.
  31. 33. Designed and Balanced Ventilation <ul><li>Ventilates all rooms </li></ul><ul><li>Controls air flow </li></ul><ul><li>Heat recovery up to 95% </li></ul><ul><li>Recovers bath heat loss </li></ul><ul><li>In Winter, can control humidity </li></ul><ul><li>Programmable </li></ul><ul><li>Low elec. cost as low as $3 per month (ECM motors) </li></ul>
  32. 34. Types of Ventilators <ul><li>HRV (Heat Recovery Ventilators) </li></ul><ul><li>Heat recovery up to 95% </li></ul><ul><li>Removes all moisture within exhaust air </li></ul><ul><li>Good for colder climates with excess indoor humidity </li></ul><ul><li>ERV (Energy Recovery Ventilator) </li></ul><ul><li>Heat recovery up to 95% </li></ul><ul><li>“ Bounces” some moisture back to its source </li></ul><ul><li>Good from warm humid climates or dry houses </li></ul><ul><li>No condensation drain </li></ul>
  33. 35. How Air Exchangers Work
  34. 36. A core with lots of surface area transfers heat Pollutants and moisture are removed and heat is recovered
  35. 37. Ventilation and Filtration <ul><li>captures 99.97% of all dust and particles even those as small as 0.3 micron (150 th of a human hair) </li></ul><ul><li>Removes moisture and gases </li></ul>For best quality air whole house HEPA air exchanger <ul><li>Other filters available </li></ul><ul><li>Pleated </li></ul><ul><li>Charcoal </li></ul><ul><li>Electrostatic </li></ul>
  36. 38. All of the data presented so far has been from houses built based on the changes of the late 70’s and 80’s. Not very tight. What will be the consequences of the latest changes with the whole country going GREEN? Maine’s mandatory residential energy code Dec 2010 Cash for Caulkers Federal Tax Credits for Energy Efficiency $5 billion to weatherize more than 1 million homes
  37. 41. What is a “tight” house? “ Home Building Envelope Air Leakage Area. The median ACH50 (air changes per hour at 50 pascals) for the homes in this study was 4.8 air changes per hour, which compares to a median of 5.2 air changes per hour for a group of homes built since 1992 and 8.6 air changes per hour for a group of homes built before 1987 . New Californian homes are generally being built tighter, but not exceptionally tight, like those found in colder climate regions.” Pre 1987 = 8.6 ACH50 Since 1992 = 5.2 ACH50 2003-07 = 4.8 ACH50 (Calif. Study Houses) In Maine, If an energy auditor tests your home and it is at or above 3.5 ACH50 you will be told that you have plenty of natural ventilation and that you do not need any additional.
  38. 42. Signs and Symptoms of Air Pollution <ul><li>Headaches </li></ul><ul><li>Congestion </li></ul><ul><li>Watery Eyes </li></ul><ul><li>Coughing </li></ul><ul><li>Shortness of Breath </li></ul><ul><li>Dizziness </li></ul><ul><li>Lethargy </li></ul><ul><li>Fever </li></ul><ul><li>Digestive Problems </li></ul><ul><li>Moisture on Windows </li></ul><ul><li>Black mold around windows and low or high on walls </li></ul><ul><li>High radon readings </li></ul><ul><li>Poor Combustion </li></ul><ul><li>Flue Back Drafts </li></ul><ul><li>Chronic Stale Smell </li></ul>effects are similar to those from colds or other viral diseases
  39. 43. Please share this video with someone you care about
  40. 44. Fresh Air Ventilation Systems, LLC 155 Spring St. Lewiston, ME 04240 207 786-9400 [email_address] www.freshairventilation.net All rights reserved
  41. 45. Pollutants listed by the EPA <ul><li>Asbestos </li></ul><ul><li>Biological Pollutants </li></ul><ul><li>VOCs (volatile Organic Compounds) </li></ul><ul><li>Carbon Monoxide </li></ul><ul><li>Formaldehyde from Pressed Wood Products and others </li></ul><ul><li>Radon Gas </li></ul><ul><li>Pesticides </li></ul><ul><li>Lead </li></ul><ul><li>Combustion Gases </li></ul><ul><li>Tobacco Smoke </li></ul><ul><li>Nitrogen Dioxide </li></ul><ul><li>Dust mites </li></ul>
  42. 46. Heat and Moisture Important Principles to remember <ul><li>Heat always flows to cold </li></ul><ul><li>Moisture flows from more to less </li></ul><ul><li>Moisture flows from warm to cold </li></ul>

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