It would be best to talk to the local HVAC companies that you would potentially hire to install a heat recovery ventilation (HRV) system.

What are you trying to address by adding this system?

It may be one of those systems that save the environment, costs $12,745.00 to install, and saves you $.36 per year. But no spotted owls die. I do not know, just a guess.

Not a professional comment.

Hey! I just had an HRV system put in last summer, and it did cost me around $3,000 including installation, but I know it can range from $2,500 to $5,000 depending on the size of your house and the complexity of the setup.

Starmilks Majkowski and I just bet you will be back shortly to recommend an installer. I would not be surprised if the OP was a setup for the potential spammer.

We installed an ERV as part of a deep energy retrofit. It was a couple thousand IIRC. Didn't do independent ducting, just fet it into the HVAC system. I clean the filters a couple times a year, no other maintenance over the last 12 years.

To Mark Bischak, I don't particularly know or care what the ROI is for adding such a system or making the house a lot tighter. Our heating bills are very low, which is nice, but more importantly this is the most comfortable house I've ever lived in. Costs were not out of line with the $/sf of the local McMansions, but the outcome much better, IMO.