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Holy! Thank you very much, that was pretty insightful. I'll read the code and see if I find something other that's useful or relevant.
As for the rest, I agree, BNME8EZ and yourself have great...

Okay. I'm getting that there is universal consensus for one stage cooling and one stage heating, using the initial letter of the color for the corresponding function.

But I also see that when...

I don't know of any recovery machine that forces absolutely all the refrigerant from the discharge line into the recovery tank. The ones I've used leave the line still pressurized and depending on...

Totally get it. Same way super heat and subcooling are used to diagnose refrigerant charge, TXVs, etc. How do we know, for example that 20°F of superheat is abnormal in one brand but not in another?...

Yes, thanks for pointing it out. I have used that exact same article as a reference since the site is legit. But notice how there are no other backing sources.

I don't know if I'm making the point...

Let's say that I do take one of those courses for $795, at the end of the day I want to know what do they base their numbers on? Even if it's their own research, it should be published somewhere and...

Hey everyone,

Is anyone else even a little concerned by the fact that manufacturers don't include as part of the installation manuals, the range of acceptable values for things like Carbon...

Depending on the number of vents. The lower the number, the more you would affect the head pressure and the more you'll tax the blower. Also, someone already made a good point about how closing a...

Well, I said it made sense for Y1 to be blue because it's call for cooling. Cooling for me sounds like blue. However, Y1 being yellow makes even more sense.
So I don't know man, I'm getting this is...

I was wondering if there is any document regulating the color coding used in thermostat connections. I recently finished a residential installation and another technician told me I had picked the...