my brother has been doing energy audits for a year now. they will NOT look at your hydro usage, meter, bills, etc. they wont be snooping around in every closet to find things.
- they will look in your attic to check depth of insulation
- basement to see if its finished, type of insulation, windows, etc
- walk around your home to check for soffit vents, type of roof, check under siding if you have it
- seal up your place and do a negative pressure test checking to see where air leakage is coming from
id say your biggest concern is the air pressure testing. if your grow fans are vented outside the powerful fan they use for testing will overpower the fans you have setup. this will draw air in from outside through your grow room through the room and then out into the main rooms and hallway. this fan creates 50mph winds so i doubt any grow op fan will stand up to this.
youd be amazed at how much air can get through a little hairline crack in window caulking so chances are your grow room may emit a LOT of smell.
for an apartment they will likely just be doing negative air pressure testing depending on what type of building you are in.
i just checked your post again and noticed you are growing in a wardrobe. they wont look inside it as they have no reason too just control the smell...