I had my 1 year warranty walkthrough on a new home and the guy commented that they typically recommend 30% humidity to maintain the hardwood flooring as he noticed my flooring had minor bowing at the edges. My indoor humidity is about 50% right now and from Googling, it seems most manufacturer recommendations are 30-50% for hardwood.
The house has an HRV system of which I have interlocked with the furnace fan. The humidifier is set at 40% and from my data log, it has never kicked in. The thermostat is an Ecobee which allows me trending and historical viewing of the data.
Looking at the weather trends, Calgary seems to have outdoor relative humidity between 25% and 80% (very roughly) over the year.
http://calgary.weatherstats.ca/metri..._humidity.html
So how is it possible to maintain a 30% humidity indoors for the flooring if the outdoor humidity is usually higher? Or have I configured my system incorrectly?