Proper means of ACH
The town in which we are bidding a project requires the renovation/addition have an ACH of .35 by a mechanical ventilating system. This is being enforced for the town's board of health. What is the proper way to achieve the .35 ACH?
Ah yes.. mechanical ventilation
..because people can't be trusted to open windows.
I have seen the bathroom fans put on automatic timers. The air exhausted is replaced by infiltration.
Or, you can use a HRV.
Basement Renovation
This will be a basement renovation with only two small windows and no bathrooms. Its going to be a home theater.
Exhaust fan...
Calculate the volume of the room, and multiply times .35, then find an exhaust fan that can move that many CFM;s to meet their needs.
If you have a lot of watts going into this room, you may need to ventilate it to keep it decent anyway.
In your heat loss calculations for this space, yo may already be providing adequate ACH just through normal infiltration, and may not need any additional mechanical air changes, but if you do, just make up the difference..
ME
It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
This post was edited by an admin on February 1, 2012 8:42 PM.
Thanks for the advice
Thank you both for the advice. I have been told that an ERV would work as well, especially with wintertime humidity, but on the other hand we are in the Boston area and a HRV seems more appropriate. Any advice on what type of unit to use?
I've been told..
That the difference is in transferring humidity. If humidity control is important, ERV, if not, HRV.
Both require regular maintenance (filter changes).
ME
It's not so much a case of "You got what you paid for", as it is a matter of "You DIDN'T get what you DIDN'T pay for, and you're NOT going to get what you thought you were in the way of comfort". Borrowed from Heatboy.
