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  1. Replies
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    He has a point...

    He has a point...
  2. Replies
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    923

    It sounds like your duct is restricted. A...

    It sounds like your duct is restricted. A technician can verify duct issues with static pressure readings and/or an anenometer. Should be fairly straight forward.
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    296

    The Luxaire 90+% modulating furnace, 80,000 BTU...

    The Luxaire 90+% modulating furnace, 80,000 BTU calls for a .15" WC blocked drain switch. You could also use a .2" as this is not the combustion air proving switch but simply the blocked drain...
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    3
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    296

    What is the M# of the furnace?

    What is the M# of the furnace?
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    214

    Why do you have this thread in two places?

    Why do you have this thread in two places?
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    246

    If you have a jumper between y1 and y2 then you...

    If you have a jumper between y1 and y2 then you don't need to turn the stat down any further. You need to make sure that you don;t have a bad economizer control that is trying to run free cooling....
  7. Pressures and line temperatures would tell us a...

    Pressures and line temperatures would tell us a lot more. Nothing can be determined, based on the small amount of information that has been provided. The next step would certainly NOT be to cut into...
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    I guess the first thing you need to know is...

    I guess the first thing you need to know is whether you have both a first and second stage call (y1 & y2), secondly do you have an economizer? Are there any faults on the board that might indicate a...
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    1,464

    You didn't indicate the compressor's symptoms. Is...

    You didn't indicate the compressor's symptoms. Is it doing nothing, tripping the breaker, humming, etc.. if it is doing nothing and the windings are not open then I would be checking my wires between...
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    4,082

    I'll stand by my statement that zoning is applied...

    I'll stand by my statement that zoning is applied for comfort and not savings. Depending on the situation, there could be some savings or some cost increase but it is difficult to predict and zoning...
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    4,082

    These are good points to consider and if the job...

    These are good points to consider and if the job is zoned from the beginning then it can be a money saver both in terms of lower equipment & installation costs and in terms of applying a smaller unit...
  12. Replies
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    4,082

    Zoning will not change the amount of heat in the...

    Zoning will not change the amount of heat in the house that needs to be removed so the load is still the same and the amount of work required is the same. A zoning system is designed to meet...
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    4,082

    I know of no residential zoning products that use...

    I know of no residential zoning products that use ddc controls. Electromechanical 'actuators' (motors) simply drive open or shut. In some rare cases they use a 'floating' control which can facilitate...
  14. I'm not a carrier guy but at this point most...

    I'm not a carrier guy but at this point most manufactures sell a 'communicating system' the only benefit to you would be more efficient and quieter operation (maybe). All parts of the communicating...
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    All awesome books. I read pumping away and how...

    All awesome books. I read pumping away and how come? wish I could have seen this post earlier.
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    4,082

    Basically you can go with electro mechanical...

    Basically you can go with electro mechanical (EWC, honeywell, ARP, etc..) or you can go with Arzel. Arzel is amazing for retro fit zoning where as the others will be time consuming and or expensive...
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    1,454

    If it is 13 seer then I would use and orifice....

    If it is 13 seer then I would use and orifice. Any savings you may see from the TXV will be lost when it fails (or someone misdiagnosis it) and you are paying for a new one to be installed. It has...
  18. Replies
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    575

    Most heat pumps run near their full capacity at...

    Most heat pumps run near their full capacity at 40*
    I don't know much about Michigan's weather so maybe if your cooling load is very low and they sized your heat pump for cooling (which is typical...
  19. I don't know much about window air conditioners...

    I don't know much about window air conditioners and I'm not sure how many guys on here are going to have any insight. They are just that - appliances. I live in a very old house in the city so I have...
  20. Parts and Labor? I don't think anyone is going to...

    Parts and Labor? I don't think anyone is going to come replace any parts on your window AC in the field. Are you talking more about a Ptac unit?
  21. I just bought one at Wal-mart and they were...

    I just bought one at Wal-mart and they were trying to shove a 3 year plan down my throat at the register. You must not be looking very hard...
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    Also, setting your LTCO to 40 is not going to...

    Also, setting your LTCO to 40 is not going to eliminate defrost cycles. Your coil will still be below 32* and there will be more moisture in the air to accumulate on it.
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    575

    In most cases, a heat pump should be able to...

    In most cases, a heat pump should be able to deliver it's capacity down below 40 degrees.
  24. Sounds like you're squared away, then.

    Sounds like you're squared away, then.
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    2,199

    I think that would depend on the pressure...

    I think that would depend on the pressure generated inside the house.
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