New digital forms have been uploaded

Just in case you have stumbled here before Ray sends an email out, the latest versions of the digital job books have been uploaded to the Intelligent Weatherization forms page.

Incidental Repair Costs
The most significant change to the work orders are the new way incidental costs are treated.  There are now incidental cost spending limits specific to each activity based on how cost effective that conservation measure is.  The more cost effective the activity is, the more that can be spent on incidental costs associated with performing that activity.  But don't forget, the $500 total incidental cost limit still applies!

For example, there is a 1000 sqft attic with no insulation, but it has some water coming in around the roof's chimney penetration.  Just to throw a number out there, lets assume there is $900 worth of insulation that you want added to the attic.  Based on the spending limits, you could spend up to $1,377 on incidental repairs before the attic insulation is no longer cost effective.  However, you cannot spend that full amount, because the $500 total incidental cost limit applies for the entire job!  Don't overspend!

Likewise, there is a small addition on the back of the house that has a water heater vent going through the roof.  There happens to be a roof leak around the water heater vent's roof jack.  You'd like to insulate the little uninsulated addition's attic.  But you can't unless that roof leak is fixed!  The addition is only 150 sqft.  It would cost $135 to insulate just that back attic.  Which means you could spend up to $206 repairing that leaky water heater vent.

If there is an activity that doesn't have a spending limit (insulating a mobile home belly, installing insider storm windows, or minor air sealing), that means there can be no incidental repairs associated with those activities.

ASHRAE 62.2
There was also a couple small changes on the 62.2 calculation tool.  The chart was tweaked to show 10 cfm increments instead of 20 cfm.  The other change was in the guidance for combustion air.  The 62.2 tool was never meant to be the means that combustion air was calculated.  But the math was already there for the ventilation sizing, so it made some sense to mention if the house was above or below .4 ACH. 

Just because a house is tighter than .4 ACH doesn't mean there isn't enough combustion air.  There are other methods of determining how much combustion air is needed based on the known infiltration rate of the house and the btus of the appliances.  The form is now more specific in letting the user know if the house is below .4 ACH, that further investigation is needed to determine if there is sufficient combustion air for the appliances, just as it always has been.