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burning embers coming out of heat pump???

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I have used a heat pump in my woodshop for years. It has been super - till this morning. I built a box surrounding the air intake to hold about 15 extra square feet of filters, which I try to keep unclogged - but a lot gets past them. I noticed embers this morning where the air exits the unit., so I shut the whole thing down and cleaned the inside coil really well and the squirrel cage fan too (both were pretty clogged up. Then the air started flowing like it was new when I was running just the fan. When I turned the heat back on - burning embers again! What should I be checking? What are the possibilities?

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  • Jamie Hall
    Jamie Hall Member Posts: 23,426
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    Does your heat pump have any resistance booster strips? If you are getting embers, something in there is getting hot enough to at least make them glow -- and the ordinary heat pump coils are nowhere near that. Another possibility is a bad bearing on a fan.
    Br. Jamie, osb
    Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England
    piglet
  • ratio
    ratio Member Posts: 3,649
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    Whatever's going on, get someone to look at it before the fire dept does!
    DJD775wmgeorgeSuperTech
  • neilc
    neilc Member Posts: 2,707
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    yeah,
    check your homeowners insurance,
    # no embers
    known to beat dead horses
  • piglet
    piglet Member Posts: 2
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    Thank you, Jamie Hall. Squirrel cage was clogged to the point that little air was passing, debri on heat strips. cleaned all, now all is fine!