1. WX Specification Comparisons

2. Background The Indoor Air Quality E.I.S and the associated record of decisions do not mesh well with the last 20 years of building research. What is and is not house tightening is not consistently defined Almost all the proposed Climate Crafter Specifications “tighten the house”

3. Goals Of the Proposed Spec Changes To increase the energy savings from each measure installed To expand the definition of health and safety to include: –Combustion safty –A more consistant and logical approch to mechanical ventilation requirements

4. The Dividing Line Between RTF and Climate Crafter Specs Is there a performance test involved? –Blower door –Duct Blaster –Insulation density inspection The requirement of a higher level of training, hence the need for certification

5. The Big Changes All house tightening work must be done by Climate Crafter certified Technicians Wall insulation will be done using the tube insert method Mechanical ventilation requirements will be guided by blower door testing Sealed and insulated crawlspaces are allowed.

6. The Big Disclaimer Many of the numbers relating to blower door numbers and ACH rates are only place holders

7. What Tightens a House? Current RTF says: –Only those measures that are deemed to seal a house and are measured with a blower door What may actually tighten a house: –Blower door guided air sealing –Windows –Duct Sealing –High density wall insulation

14. Questions to the RTF Should the current RTF/BPA specifications allow deviation from current ventilation requirements? Should CC specifications allow deviation from the current ventilation requirements? What kind of training, if any, should be required for the proposed changes? –Will this require more than just training? (i.e. should CC quality assurance be required or should it be a one time certification class?)