I’m looking to replace my current Lifebreath RNC 95 HRV. It makes a 1040 hz noise (blade pass frequency on low) that travels throughout the house. Nothing like a clear tone resonating throughout an otherwise quiet house to make a person crazy. I managed to modify the fan housing enough to nearly eliminate the noise years ago, but it also limited the flow. After recently reading about resonators, I decided to try to tackle the noise without losing so much flow. After three days of trying, it’s now broken and I’m okay with that.

I’m looking at a Broan B110H65RT as a replacement and was wondering if anyone can confirm that this (or a similar unit) does not have a noticeable resonance. A little noise is okay, but a pure tonal noise is the concern… think running your finger around the rim of a glass. Any other feedback on these units would also be welcome.