Chelsah Thomas wrote:

I have scoured the documents I have trying to find some clarification to my below issue: 

When a jurisdiction allows you to "Confirm that the proposed house is at least 5% more efficient than the reference house when ERS mode is used in Hot2000 software"; would this be via "Alt C" under the "advanced" tab -> "space conditioning and DHW consumption"

OR 

Would this have to be manually calculated on the Report output. 

The reason why I ask is sometimes I have projects that do perform better than 5% via Alt C route, but then through manual calculation they do not. Up until this point, we have decided to manually create the reference house preemptively if this is the case, but it would definitely save time to just run ERS. I know it's probably up to the AHJ but it would be nice to have something to source back to if we are in the position to justify going the 5% route when manual calculations say otherwise. 

I can provide more info if needed and thanks everyone! 

Alt C is the way to go if using ERS as the reference house is generated in program

If you create the reference house yourself then I'd presume you'd be using 9.36.5, which is not ERS

Hi Toby (and Ray)

To clarify, the issue is that the AHJ, when I run the ERS reference report, cannot specifically see the Alt C results and manually calculate the annual energy consumption on their end. So if I provide the results from the screen, they won't be the exact same as they get when they are adding it up. And in most cases, they don't match. I have seen instances where the house is at 5% on the screen, but less than 5% on the reports so if I went with the screen, they would not accept the models/reports. 

I guess I'm venting my frustrations as there is a disconnect at this point between inspectors expectations and the software providing mixed results.

When Toby said "I've also noticed in the Full House Report that the MONTHLY ESTIMATED ENERGY CONSUMPTION BY DEVICE (MJ) does not add up to the ERS Rating like it use to. I have heard twice now, from people at NRCan, that they have not maintained updates to the Full House Report and to not trust the results contained in it," it is a bit disheartening as unfortunately, when we submit reports, this is what the inspectors are relying on for confirmation. 

NRCan, I hope you read these forums!