Homeowner here looking for some advice on power vents.
I have Field Control power vent SWGII-5 that is about 16 years old. It is hooked up to a Johnson Air Ease Ultra 80 oil furnace, also about 16 years old, which we have cleaned/tuned every year.
I am replacing the motor on the power vent about every 5 years (costing me about $500 for parts and labor).
When the vent gets to about 4 years, it starts vibrating and buzzing a lot, really annoying. Last time, it made a bang, then quit. The tech that came out said the fan wheel had fallen apart. He showed it to me. Said power vents were a cheap alternative to real chimneys, and we were lucky to get 5 years from it. He said he wouldn't just replace the wheel, because it was "probably" fused on to the shaft, and the motor probably wouldn't last much longer either. He said I could keep the old motor if I wanted to try to get the wheel off. I took his word for it. But I know he didn't even try. I didn't have time then to bother with it, but now I'm wondering if I should have tried.
Is it normal to only get 5 years out of these? Would I be better off replacing with a whole new power vent at this point, or just keep replacing the motor?
I've noticed that FC sells a lube for these that I never knew about before now, and our furnace service company never mentioned that we should lube the pv motor. I am not the original homeowner, so I had no idea about this. Does lubing them extend the life past 5 years? I can't imagine it would make any difference for the wheel.
Does Tjernlund make a better unit than Field Control?
Would appreciate any advice/help.