What kind of hole saw are you using that it doesn’t grab and try to rip your arm off?? That’s what it seems like every time I use my Milwaukee HoleDozers…
I consulted with Broan who we are using for all the IAQ equipment and their recommendation for my situation was to use direct-vented bath fans to simplify ERV ducting and optimize effectiveness. More to come on HVAC and IAQ equipment integration
Are the picture frames absolutely necessary between the OSB and the vent? Or is it ok to mount the vent directly to the OSB with screws + silicone caulking, then add a picture frame around the vent to hide the screws, making it more aesthetically pleasing? This is assuming the vent has enough clearance when mounted directly to the OSB that it doesn't interfere with the surrounding siding.
You can do either, in my case i have a rainscreen plus Hardie siding so needed to build it out more. I also think it’s a cleaner look than if the vent is set back into the siding
@@MasonDixonAcres Thanks for the reply!! I couldn't for the life of me find any definitive guides or bylaws indicating how the external side wall vent should be mounted. I just recently bought a house which also has Hardie plank siding, but don't yet have a miter or table saw, so cutting PVC trim to size cleanly would be a challenge. The dimensions on my vent are 8.5"x9 3/4", and I ran into the same problem you did with PVC trim costing an arm and a leg for the width I needed. I think I'll go with mounting to the OSB and adding a picture frame over that - would you have any recommendations on how thick the picture frame should be? I have some 3/4"x1.5" trim that I can use, so it would extend the same distance off the OSB as the hardie plank.
Why a bath fan if you have an ERV? I would think you have to add makeup air with how tight your build is. Typically, you tie the bathrooms together to the ERV so it continuously pulls humid stinky air out of them.
The answer for my situation is a little complicated - tying bath fans to ERV exhaust is certainly an option. However, the geometry of my framing, existing plumbing, and utility room layout prevented easily connecting the upstairs fan to the ERV exhaust. I also didn't want to share any air pathways between upstairs and downstairs (even with a backdraft damper), so I also didn't want to connect the shop bath fan the ERV. Framing and mechanical obstacles also made it much easier to pop it through the wall. I consulted with Broan who we are using for all the IAQ equipment and their recommendation for my situation was also to use direct-vented bath fans to simplify ERV ducting and optimize effectiveness. More to come on HVAC and IAQ equipment integration
@MasonDixonAcres look forward to seeing that. I am going with broan as well for me erv, but since I designed my house, I made sure to account for all plumbing and hvac runs within the walls.
I’m looking everywhere for that exterior junction box you used for the receptacles but can’t find it. What is it called? Thanks. You said it’s 41cu in and cost $25.
