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    tube heater-

    it is installed for use in auto mechanic garage-
    it is running at 3.5" & we have one that is not proving the pressure switch. Could not find any blockage anywhere in system to cause problem. ...
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    Solartronic Tube Heaters

    Does anyone else have problems with these heaters?
    Frequent problem is pressure switch not proving, flue clear, tube clear, no obstructions, tech support says don't adjust pressure switch.
    ...
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    My application for this right now is with a...

    My application for this right now is with a customer that wants to know in the past 3 years how much they have saved while operating the economizers because they have had about $1500 in repairs in...
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    I would be interested in some feedback on this as...

    I would be interested in some feedback on this as well...does anyone use a simple software program...most manufacturer's that I talk to say there are too many variables to nail down an exact...
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    NADCA0-Duct cleaning

    Does anyone have any thoughts or recommendations on getting NADCA certified? We thought it would be a good way to stand out from the competition but not sure how helpful it would be to be NADCA...
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    thanks

    I appreciate that website and will check it out.
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    781

    thanks for the response

    Okay the only duct change we made was that we added a supply to the crawlspace and we wrapped the metal ductwork in the crawlspace with insulation.
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    We changeout a furnace that is a downflow, supply...

    We changeout a furnace that is a downflow, supply duct in the crawl, return duct in the attic. We removed an older 80% standing pilot gas furnace with a new 90% variable speed gas furnace....long...
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