The HRV (heat recovery ventilator) broke down in March.
September 25th was the 1st time they came to install the new one. At that time it was discovered that neither the people ordering the HRV, the people selling HRVs, or the people installing them thought to ask if the intake and exhaust vents would be in the same location on the new machine as on the old machine.
They were not.
After a lot of humming and hawing it was decided to keep the new unit and build out more ducts to make it fit. The duct material had to be ordered in. Apparently it was special and not in stock.
They finally came back, Friday the 16th of November. Now that it is too cold out to open windows without the heating system coming on (or freezing, I still don’t have adequate safe warm clothing, but that’s another story) they came back.
And wouldn’t you know it, there is something in the new system that isn’t good for me, and, it gets sucked through the ducts whenever the heat goes on, even if the HRV is turned off.
It might be because