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  1. Replies
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    Sorry, this is not a DIY site. Thread closed.

    Sorry, this is not a DIY site.

    Thread closed.
  2. TESP measured. Along with the coil's pressure...

    TESP measured. Along with the coil's pressure drop checked. If coil is dirty, having it cleaned, and then the TESP and pressure dropped rechecked. Will also tell you if your duct work is suitable.
    ...
  3. That can be difficult for some areas. Might...

    That can be difficult for some areas.

    Might want to try the Contractor Locator Map link in my sig.
  4. Its easy to tall if the indoor coil is dirty or...

    Its easy to tall if the indoor coil is dirty or not. A Static PD check often confirms its condition one way or the other.

    Depends if he wrote in the contract that you get the info or not. As to...
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    While your at it, replace the existing LLFD. It...

    While your at it, replace the existing LLFD. It could be restrictive and caused it to look like the system was low on charge when the other tech was there.
  6. Actually, EPA regs always required R410A to be...

    Actually, EPA regs always required R410A to be recovered. Even though it didn't specifically list R410A. It said ALL Chemicals used as a Refrigerants.

    PS: We don't talk prices here.
  7. An actual TESP measurement would tell you how...

    An actual TESP measurement would tell you how much air the furnace is moving. The install manual has a chart in it to check against.

    Again, your current coil may be very dirty, and should be...
  8. Well, if he measured the supply static in the...

    Well, if he measured the supply static in the plenum after the A/C coil. He didn't get a very useful reading. The reading should have been taken between the A/C coil and the furnace. Then a reading...
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    Submittal sheet for it says: Enhanced mufflers –...

    Submittal sheet for it says: Enhanced mufflers – help to dissipate vibration energy for quieter unit operation
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    What is the full model number of your outside...

    What is the full model number of your outside unit. Or at least the tonnage of it.
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    While the former owner could have covered up lint...

    While the former owner could have covered up lint problems. With all the return air coming through the basement, the chemicals would be diluted very similar as if the laundry room was a separate...
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    Sorry, this is not a DIY site. Thread closed.

    Sorry, this is not a DIY site.

    Thread closed.
  13. Replies
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    Okay, now that you listed several of the possible...

    Okay, now that you listed several of the possible reasons he didn't doesn't talk to you.

    Other than you don't believe he would have listened to you. What good reason do you have for not warning...
  14. Replies
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    Safe, yes. Efficient, not really.

    Safe, yes.

    Efficient, not really.
  15. Replies
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    OBL uses an ECM blower motor. OVL uses a VS...

    OBL uses an ECM blower motor.

    OVL uses a VS ECM blower motor.

    Both are furnaces are rated at .5 static.
  16. How evasive varies with the house. If a tech...

    How evasive varies with the house.

    If a tech evaluates a system just by checking refrigerant pressures, he really isn't checking properly. Needs to go by SC and SH. He should also check actual air...
  17. Like many things in new construction. The actual...

    Like many things in new construction. The actual HVAC job was subbed out to an HVAC sub contractor. Probably the lowest bidding one. So yes the duct work could be that bad. And often is.

    Depending...
  18. Replies
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    The RTU the OP is working on. Has 2-7.5 ton...

    The RTU the OP is working on. Has 2-7.5 ton circuits/compressors.

    When the Rawal valve is maintaining the evap pressure/saturation. The compressor is not working as hard as it would if it was...
  19. Replies
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    Moved to AOP.

    Moved to AOP.
  20. Way back in the 70s. It was all pipe dope around...

    Way back in the 70s. It was all pipe dope around here. Didn't hear of thread sealant being used on pipes until the mid to late 80s.
  21. https://static.grainger.com/rp/s/is/image/Grainger...

    https://static.grainger.com/rp/s/is/image/Grainger/39AT51_AS01?$mdmain$
  22. Its suppose to be R and CH1 for a heat call. ...

    Its suppose to be R and CH1 for a heat call.

    May have blown a fuse on the zone panel. It should have its own separate transformer.
  23. I virtually never use dope on them. Dope is just...

    I virtually never use dope on them. Dope is just to over come friction. On a small plug like that, none is needed.
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    In the Pro forums, we have a Business and...

    In the Pro forums, we have a Business and Marketing forum. Its a good place for these types of discussions.

    You should apply for Pro membership. Takes being a business owner and 30 post to apply...
  25. The garage and guest house/area by code may not...

    The garage and guest house/area by code may not be conditioned by the same forced air system.
  26. Replies
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    Sounds like the problem is your system has a leak...

    Sounds like the problem is your system has a leak and none of the companies that sent someone out are interested in finding it, and repairing it.
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    Spray some dish soap on the joints the second...

    Spray some dish soap on the joints the second company questions.

    Nitrogen leak check would be best to be done by installing company. So that down the road, they can't say other company messed...
  28. Replies
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    What size is the existing heating and cooling...

    What size is the existing heating and cooling system.
  29. Replies
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    Probably over heated the TXV, or the bulb while...

    Probably over heated the TXV, or the bulb while it was dangling in the air.
  30. Can't say for sure. But probably at least once...

    Can't say for sure. But probably at least once every 30 days at min.
  31. Replies
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    It has a 10 year warranty to the person that...

    It has a 10 year warranty to the person that first had it installed. It won't carry over to you.

    PS: Pricing questions are not allowed.
  32. That wold depend on how often the air filter is...

    That wold depend on how often the air filter is changed.
  33. Replies
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    Moved to AOP.

    Moved to AOP.
  34. Cooling has a different speed than fan only.

    Cooling has a different speed than fan only.
  35. https://hvac-talk.com/vbb/showthread.php?1241-Welc...

    https://hvac-talk.com/vbb/showthread.php?1241-Welcome-to-HVAC-Talk!-Please-read-these-rules

    2. Do-It-Yourself (DIY) - not here.

    This site is for industry professionals and folks seeking HVAC/R...
  36. 120 PSIG is not an indication of a problem on a...

    120 PSIG is not an indication of a problem on a R410A unit.
  37. No its not.

    No its not.
  38. Replies
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    For you K may be better. But the majority of us...

    For you K may be better. But the majority of us use Fahrenheit. So to help us help you. If you can convert to F you can get much better answers.

    Good chance the condenser coil is not as clean as...
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    Ah. Have you cleaned the condenser coil? ...

    Ah.

    Have you cleaned the condenser coil?

    What was the suction pressure?
  40. Replies
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    Ambient air temp of 113°F, you should have a much...

    Ambient air temp of 113°F, you should have a much much higher discharge pressure. In the range of 500 PSIG.
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    Its used in a lot of applications that don't have...

    Its used in a lot of applications that don't have hot gas bypass/hot gas defrost.
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    Do you use temp set back to save electric? If you...

    Do you use temp set back to save electric? If you do, that is probably at least part of the problem. Because when it recovers from temp set back, it uses the electric aux heat to recover, using far...
  43. VS blower motor moduless have a governor in them.

    VS blower motor moduless have a governor in them.
  44. Could cause the duct to sweat on the outside of...

    Could cause the duct to sweat on the outside of its insulation.
  45. Replies
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    Whats your min outdoor air setting at? Might need...

    Whats your min outdoor air setting at? Might need to set it to a min of 50%.

    Are you sure the old Trane wasn't a 12.5 ton, and that someone didn't read the 150 as being 15 tons instead of...
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    Butterfly damper. Any device added to a...

    Butterfly damper.

    Any device added to a system will have a pressure drop, causing a higher static for the blower to work against.
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    Dual fuel would be worth it at the rates you...

    Dual fuel would be worth it at the rates you posted. Specially since you have solar panels also.
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    Moved to AOP.

    Moved to AOP.
  49. Replies
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    Moved to AOP.

    Moved to AOP.
  50. Moved to AOP.

    Moved to AOP.
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