Recent content by brewchief

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    Residential Air Handler help (freezing)

    Trap like that is useless if the tee is open between it and the air handler. I don't know if Rheem used an aluminum coil but if so avoid chlorine bleach and other chemicals as they can damage them. Drain pan is plastic so unlikely to be leaking. It will be an airflow or refrigerant problem most...
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    How to test this?

    I have the same pump right now, I think it's 8 or 9 years old and still works great, I change the oil when it starts to take a longer time to pull under 200 microns, not uncommon to do 10 or 15 A/C replacements before needing a change. If your dealing with a contaminated system then you might...
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    Why would an appliance have a "max breaker size"

    There many cases where the wire size needed is considerably less then what the unit may draw on start up. The larger breaker is to prevent nuisance trips. Since the hvac unit has internal overload protection the breaker is basically just protecting the wire in a short circuit case. In your case...
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    Ducted Heat Pump System - Whole House Humidifier Options?

    Fan powered simply pull air from the plenum and blow it across the water panel, bypass uses the difference between the supply and return to move the air. The only times we install a fan powered unit are when there is no physical space to install a bypass unit or when it's a zoned system and we...
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    Who is doing package units on a barn?

    You're typically going to limited to 5 tons max per unit unless you have 3 phase power. If on the roof you have the potential for leaks and you will need a crane to set them and to replace them in the future. Personally I'd prefer to have them on the ground. As an HVAC guy I would do split...
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    Poor box planning.... extension option I'm overlooking?

    If it's just a junction box what about simply putting a blank cover on it and leaving a hole in the drywall and using a simple access cover to cover that hole.
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    Carrier Induced-Combustion Gas Furnace

    Sorry just glanced at model and serial numbers, those must be the coil numbers not the furnace.
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    Carrier Induced-Combustion Gas Furnace

    Does the gas valve open and you get a brief flame that goes out after a few seconds? Dirty burners can have crossover ports that are plugged up and the flame sensor never sees the flame. Removing and cleaning the burners would be a good start. Unit was built 18th week of 2008 so while not new...
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    Post-filter after Electronic Air Cleaner

    What are you installing for a furnace? Most manufacturers will allow a base to be used under the furnace that raises it and allows a 20" tall air cleaner, the bottom of the furnace is removed and the base allows airflow to come in both the side and bottom of the furnace. Carrier/Bryant sells...
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    Mini split or small port high velocity hvac?

    Using the unico might not be very easy if it's a r410a unit, finding 410a equipment around me isn't very easy and switching it to use r32 or r454b may require a new txv and will need whatever leak sensing add on **** that required with the A2L refrigerant. One really has to decide if it's the...
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    Post-filter after Electronic Air Cleaner

    If i felt my filter needed a filter after it I would throw it in the garbage, personally thats where i feel all EACs belong. In nearly 30 of replacing furnaces I have never seen one with an EAC that the blower compartment is clean like it it with a properly installed media filter. The only...
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    UPDATE. Should the exhaust from a 90+ gas furnace smell?

    Most likely the secondary heat exchanger is failing/plugged, carrier/byrant/payne has had issues. Heat exchanger may be under warranty but labor will not be. When you can smell the exhaust when you pull in the driveway it's making enough CO to kill the sensor on a combustion analyzer.
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    Unhappy with new HVAC. WAY too loud!

    In your original thread you said supply duct is under slab and return is ducted over a drop ceiling, what type of ductwork is the return and how large? How far from the furnace to the return grills and how large are the grills? Metal duct can transmit sound very well, adding a acoustic...
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    Are All Linesets Created Equally?

    Some of the white insulation has been shown to eat throw the copper if it stays wet outside. On a side note don't use the factory flares on the linesets, they are rarely good.
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    Need New A/C Or Heat Pump

    When you say 4500 sq feet are you talking total living area including some finished basement space or is that all above grade living space? Is ductwork located in an accessible basement space( non finished), a finished basement space or attic? How does the current furnace vent? Does it go into...
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