Christmas and the new year came around. We made the move from the garden apartment up to the 1st floor – with a brand new ERV! I was expecting a smoother ride here, after the basement ERV gave out on us in October and again in November.
But it wasn’t meant to be.
I still had some trailing paranoia from the incidents with the basement ERV. I kept frequently checking to see if the units were running OK. And that is when I noticed a noise from the 1st floor ERV that I didn’t like.
By now, I can open up the ERV blindfolded and hanging upside down, which I did. Except I wasn’t blindfolded or hanging. But I was surprised when I took a look into the ERV, because one of the filter pies in the enthalpy wheel was missing!
After turning the enthalpy wheel very carefully, it turned out that the pie wasn’t missing but was partially pulled out from the wheel and got stuck.
The filter pies that go into the wheel are made of three fabric layers that are woven together. In my case, the three layers started to separate. The outermost layer peeled out and jammed the wheel.
But there is some smart design in this ERV. Whoever developed the product anticipated that the enthalpy wheel may get jammed. The driver belt that transfers the motion from the enthalpy wheel motor to the enthalpy wheel is designed to snap upon a certain amount of resistance. It is the sacrificial component because it is cheap and easy to replace.
UltimateAir promptly sent me a new belt and a new set of properly woven filter pies.The belt and pies were quickly installed, and the ERV was up and running again.
All this happened in January, amidst our delightful polar vortex. It was freezing cold outside, and we were again sitting there without mechanical ventilation, when we need it the most.
These incidents (the 3rd now this winter) have become somewhat unnerving. There is maintenance to any and every utility in a building; I get that. The ERV should be serviced after a cumulative 90 days of operation. In fact, the master control for the ERV has a little red LED light at the bottom that comes on to let you know that the cumulative 90 days are up and it is time for some maintenance. I love that little detail.
But right now, I feel I have to check on the units on an almost daily basis to make sure nothing is going wrong. Imagine if you had to check on your hot water heater every day to make sure it is still running OK.
The saving grace in this is the excellent customer service UltimateAir provides. Whenever I call them, they are very courteous and helpful. All the servicing they have done and all the replacement parts they sent me fell under warranty.
- ERV croaked – Part 2
- ERV croaked – Part 1
- ERV – keeping the heat
- 1st floor ventilation details
- 1st floor ventilation planning
- ERV recap
- Installing the ERV
- Picking an ERV
- Vetting ventilation