Thanks for all the responses guys I'm pretty much sold on the HRV going to look at getting some quotes for one

Any idea what the ball park would be? Smallish house 1050 Square feet ?bi level split (come in i can walk upstairs or down to walkout basement )

The units that I was looking at were $500. A full professional installation could run you $4000 according to this thread: http://www.canreef.com/vbulletin/sho...v+installation

If you are fairly handy, the install is fairly simple and Home Depot has them for around $800. You just need to get help or have a professional balance the intake and outake flows.