ASHRAE Releases Revised Version of IAQ Standard

October 26, 2013

ASHRAE ^2.1 Indoor Air Quality Solutions IAQSThe newly published ANSI/ASHRAE Standard 62.1-2013, Ventilation for Acceptable Indoor Air Quality, sets minimum ventilation rates and other requirements for commercial and institutional buildings.

The 2013 standard combines the 2010 standard and 10 published addenda to that edition. Specific information on the contents of each addendum and approval dates for each addendum are included in Informative Appendix J at the end of the standard.

“The 2013 version of Standard 62.1 continues the trend of increasing clarity while adding flexibility,” Roger Hedrick, Standard 62.1 committee chair, said. “These changes will allow designers and building operators to meet the requirements of the standard and provide adequate ventilation airflow to occupants while reducing excess ventilation and the associated energy consumption. “

The 2013 edition of the standard revises and improves the standard in several ways. A number of changes remove inconsistencies within the standard in an effort to improve clarity.

Significant changes include: ·

Table 6-2, Zone Air Distribution Effectiveness is modified to increase the ventilation effectiveness of underfloor air distribution systems that meet certain conditions;

· Requirements for the quality of water used in humidification systems are modified and clarified;

· Building level pressurization requirements were clarified, including adding a definition of “exfiltration;”

· A performance alternative to the prescriptive exhaust rates is added.

This approach differs from the Indoor Air Quality Procedure, the existing performance-based method for setting supply ventilation rates, in that monitoring of the concentrations of contaminants of concern is required and provides the basis for control of exhaust flow rates;

· Some changes to the ventilation rates and space types in Table 6-1 are made.

These add refrigerated warehouses and change the ventilation rate for sports related spaces to include a per occupant component which then allows the use of demand controlled ventilation in these spaces;  · The filtration requirement on air entering wetted cooling coils has been modified to change the MERV rating from 6 to 8. This change will reduce potential for particulate deposition on the coils that could lead to biological or other contamination on the coils; and  · Toilet exhaust air that is cleaned to Class 1 may be recirculated.

The cost of ANSI/ASHRAE Standard 62.1-2013, Ventilation for Acceptable Indoor Air Quality, is $79 ($67 for ASHRAE members). To order, contact ASHRAE Customer Contact Center at 1-800-527-4723 (United States and Canada) or 404-636-8400 (worldwide), fax 678-539-2129, or visit –

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Latest Edition of ASHRAE Standard 90.1 Available as Redline

October 26, 2013

ASHRAE 90Use the redline to instantly identify updates in the 2013 revision of Standard 90.1.

This expanded document compares the 2013 edition to 2010, ensuring you know exactly what changes have been made from one edition to the next. It’s an indispensable reference for engineers and other professionals involved in the design of buildings and building systems. Select the redline upgrade in print or digital format to receive two documents; the clean, active version of the standard and the redline version.

About Standard 90.1-2013: Energy Standard for Buildings Except Low-Rise Residential Buildings (ANSI approved; IES co-sponsored) provides the minimum requirements for energy-efficient design of most buildings. Learn more

About Redlines: A redline document is a quick, easy way to compare all the changes between the active standard and the previous version. Redlines allow users to instantly identify additions, deletions, and other formatting and content changes. Learn more

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Questions To Ask The Mold Inspection Company

October 26, 2013

IAQ SolutionsAre you licensed by the State as a Mold Assessor?

What qualifications do you have to perform mold inspection and/or testing?

Are you familiar with the IICRC S-520?
Will I be getting a written report from you or the lab?
How do you interpret the laboratory results?
Will you be conducting a visual inspection or just mold testing?
What certifications do and your company have?

What are the qualifications of your mold inspectors?

(Note: Ask what the certification requirements for any certifications they have either as a company or the individuals who will be performing the work. There are many certifications with some requiring much more work than others. Some are probably quite simple and, unfortunately, do not connote qualification to perform a mold inspection. Further, some may require a lot of work, but are not related to nor do they touch on mold itself. Take a moment to look online to find out what’s required for any certifications they list.)

How many mold inspections did the person who will inspect your property do in the last year?

How long has he/she been in this line of work?
What is your philosophy regarding mold testing?

(Tip: You’re looking for conflicts of interest here. Does the mold inspector always recommend mold testing? Or are there situations where he/she says mold testing is not needed?)

How many mold samples do you normally take?
Do you perform the mold sample analysis yourself?
Do you perform mold remediation?

(Tip: You’re looking for conflicts of interest here. If they also perform remediation, they have a vested interest in finding mold to clean up.)

Do you receive any commissions, or referral fees for sending work to mold remediators?
How long has the mold remediator you recommend been in business and what are their qualifications?
How long has your mold lab been in business and what are the lab’s qualifications?
Do you have references from work done in the past year that I can call to ask how the inspection went?  (Tip: Be cautious of anyone new to the business and doesn’t have references.)

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