Retrofit ERV Duct Layout – GreenBuildingAdvisor

Hi everyone,

I’ve posted here about air quality, radon and Co2. After 3 contractors and hours of my own brainstorming I’ve given up on a simplified ERV connected to my central HVAC system. There is no possible way to route the intake and exhaust to the exterior due to many limiting factors of my house’s design and grade.

Therefore I am moving ahead with a radon mitigation system first. But at the same time I’m trying to figure out a way of installing a separate ERV on the second floor of the house only (where we spend the majority of our hours, sleeping or working) with dedicated ductwork and bulkheads. The unit itself would be located in a closet.

Here is the design I came up with. It would be great to get feedback from those with more experience to know if this is realistic. Is installing an ERV on the second floor only a reasonable compromise for a retrofit install?

I’m also wondering about noise level of an ERV such as the VanEE AI Series (https://broan-nutone.com/en-ca/product/freshairsystems/v150e75nt). There’s literally nothing in the specs or literature about the noise levels which concerns me.

Thank you!