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  1. So the -41 and -42 coils are the same coil for...

    So the -41 and -42 coils are the same coil for your purposes.
    The 37l51 will work for 1.5-3 tons and 39l72 is good for 3-5 tons.

    You're worrying too much! unless the system isn't working right,...
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    If you're measuring amps on the incoming power...

    If you're measuring amps on the incoming power wires, or at the compressor contactor, you'll likely never see even amp draws on the small package units. Generally manufacturers will use single phase...
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    I'd take the frigid cold any day over the heat...

    I'd take the frigid cold any day over the heat we've had up here (Calgary, Canada)
    Last Wednesday it was 114 on the roof... I could barely handle it, and the phone was going nuts! 114 is well above...
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    CPS makes them, but don't try to pull a vacuum...

    CPS makes them, but don't try to pull a vacuum with them, they don't seal!
    YJ also makes them, I haven't had a chance to test those yet under vacuum.
    Both hold well under pressure though.
  5. So you have high, fluctuating head pressure, and...

    So you have high, fluctuating head pressure, and really high subcooling.

    Non condensibles?
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    It'd be nice to see a libertarian candidate have...

    It'd be nice to see a libertarian candidate have a go anywhere in the world.
  7. Dissimilar gas appliances should be vented no...

    Dissimilar gas appliances should be vented no closer than 36" to each other.

    That's a no heat call waiting to happen
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    Why worry? The world is less than 10,000 years...

    Why worry? The world is less than 10,000 years old, so that so called "evidence" found in mountain sides and the like was planted there by the baby jeebus.
    I'm just gonna stick my head back in the...
  9. I use a micron gauge because it makes me feel...

    I use a micron gauge because it makes me feel good about my work to be honest.
    Pulling a vacuum is a poor way to check for leaks, as a pound or 2 of nitrogen is cheaper than the time spent trying...
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    I'm not a fan. My boss bought 2 of them after we...

    I'm not a fan. My boss bought 2 of them after we had the electricians on a huge job cut the power to the circuit we were using to evac the first of 6 90 on splits we installed. Causing oil from my...
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    I can assure you the equipment made up here in...

    I can assure you the equipment made up here in Canada is made from the same parts that American equipment is made from.
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    If the concern here is that a 1/4" line won't...

    If the concern here is that a 1/4" line won't feed a 3 ton system properly, who can a receiver fix this? I realize you'll be storing liquid right at the evap, but you still have to get the...
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    I once ran a mini split line set from an access...

    I once ran a mini split line set from an access hatch in an elevator room down 2 floors, through an air shaft and out a hole you could barely fit your hand through in a 40 year old office tower.
    ...
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    Yup

    Yup
  15. If you don't know how to use the venting tables...

    If you don't know how to use the venting tables and pipe sizing tables in the code book you're in real trouble.
    As far as #2 goes, there's a table for that as well. Refer to tables 8.2 and 8.3.
    ...
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    The port size doesn't dictate how deep your...

    The port size doesn't dictate how deep your evacuation will be (generally), just the length of time it will take.
  17. Or the Yj version. 69049 I think

    Or the Yj version. 69049 I think
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    Yeah you're probably not getting 1355cfm. A...

    Yeah you're probably not getting 1355cfm.
    A bigger blower is an option, but since your motor is a variable speed, the next size up for that furnace is the 5 ton blower, that's gonna cost you big...
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    We've had 2 new Lennox RTUs go flat on gas within...

    We've had 2 new Lennox RTUs go flat on gas within a year due to leaks on the epoxy joint where the aluminum joins the copper.
  20. EACs are outdated and cause more harm that good....

    EACs are outdated and cause more harm that good.
    Every time you hear that clickety-clack of the sparks, ozone is created, which is a health hazard.
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    Came across one that was a year old and had...

    Came across one that was a year old and had literally exploded, sized right for the application. It took out the contactor as well.
    The last one I put in had a failed PTC relay after a week.

    Two...
  22. Pressures would be helpful. Have you checked for...

    Pressures would be helpful.
    Have you checked for a restriction?
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    The 5-2-1 works really well, and is very...

    The 5-2-1 works really well, and is very reliable. All you need to know is the tonnage of the compressor to select the right kit.
    Do NOT let them install the supco superboost kit. They're ticking...
  24. Definatly don't repair that old machine. It's not...

    Definatly don't repair that old machine. It's not worth it.
    I wouldn't bother with the Payne option. R22 is on its way out unfortunately.
    The Lennox option would be my choice but Maybe get one more...
  25. Duct board on the supply side is a joke, IMO it...

    Duct board on the supply side is a joke, IMO it should only be used for returns in a conditioned space.

    Good luck finding a contractor!
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