I bought my HRV, A Venmar Hepa 3000, from Home Depot along with the installation kit which contains the ducting and vent hood among other parts. It cost about $1000, plus I had to move a few other things in my furnace roiom to clear space for the unit. I did the installation myself, tying it into the existing HVAC ducting rather than installing all new stand alone vent ducts for it. That was not feasable to do given that the house is a two story with a fully finished basement (well almost). I put the vent hood out through the rim joist as Tony suggested. The venmar unit has a combined hood for both exhaust and intake, some units just use two seperate vents which will require you to cut two openings. The entire job took me less than a day to do, but I am fairly proficient at DIY stuff.
If you do decide that you'd rather take the vent out through the concrete wall, you can get a contractor to core the hole for you. I did that for my basement fireplace. It cost me $100 and took the guy less than an hour to do. Just look in the yellow pages under "concrete cutting and coring".
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I retired and got a fixed income but it's broke.
Ed
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50 gallon FOWLR, 10 gallon sump.
130 gallon reef, 20 gallon sump, 10 gallon refugium.
10 gallon quarantine.
60 gallon winter tank for pond fish.
300 gallon pond with waterfall.
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