HRV v.s. WHD
Seeing that you are in Edmonton, I would recommend installing a HRV.
Reason being that it is going to be cold for majority of the year. I have installed a HRV last year and loved it, my basement was constantly > 60% with humidity even with 2 individual dehumidifer installed before; but last winter, it was always below 45% and the lowest was around 35%.
Dehumidifer is useful when you are in a warmer area and also for the summer months, it does take alot of electricity to run. For us in Toronto, the HRV start to become useless from mid-June to mid-Sept due to the humidity outside the house is alot more humid than inside. But for Edmonton, I think you guys are much colder, so it should have a longer useful life.
Either way, in the summer you will have to run supplementry dehumidifer (unless you have a very strong air conditioner that also acts as a dehumidifer)
p.s. My installation for a York 220 HRV unit was around $2000 including the unit & installation, I think I got some money back from government's rebate too like $300, but I did it with my furnice + A/C replacement. Whole job cost 9800 as I recall (minus the rebates)
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