Sure you can ask, but it's been answered already. The energy content of a flammable material is not a reliable indicator of how hazardous it is.
This was a rapid unscheduled uninstallation. 100 yards away from the condenser.
So what is the talk about the difference between "burning" or detonation, who gives a damn if one substance is faster than another if a home/building is scattered all over a neighborhood, it is irrelevant. If your in a war. mining or demolition, then it is pertinent. Have you ever been in a building when natural gas decides to "burn"?, I have, it is faster than your senses can handle if your near the ignition source, propane will have the same effect.
I'm going to start putting that in everything.Wait till you find out about propane.
It is oddly a really good system. My 06 blows arctic temps.
I think Freon is a brand name like Kleenex, so they can put it on anything. Honestly I don't think it has anything to do with the environment. They got everyone to buy new equipment with 410A and they are going to try to do that again.
It's Dupont's tradename. Comes in multiple scents.
Most, if not all, of the R22 replacement "blends" had various miscibility problems with refrigerant oil. So they added propane or isobutane for oil return issues. That way you could remove the R22, evacuate the system, and add the blend without having to deal with flushing and compatibility issues. Made the blends what they called more of a "drop-in" replacement. That sounded great, but there was the latent burning potential. And most of them had capacity fall-offs.
I agree. It's all about money.
Yeah, I wish they'd made my Equinox or 2015 2500HD as good as my 2007 (classic) 2500HD's. My 2002 2500HD wasn't as great, it seems something changed with the cateyes.
Patents and money.
Too dangerous....
Patents, lobbyists and money.
R410a is charged as a liquid, so maybe "flavors" would be a better way to put it?
It wasn't a blend he mixed up. It was something that was 100% propane, or isobutane, I forget what was as it was about ten years ago. Jug color was very close to what he intended to use. He just grabbed the wrong jug, and it ended up badly.
Oh, I see.
It's going to be a gradual transition as old stock is consumed, but since 2020 the standards have been updated to where all refrigerant bottles will be painted a uniform gray/green color and the printed text on the bottle will be the sole means of identification.
blog.msasafety.com
It's going to be a gradual transition as old stock is consumed, but since 2020 the standards have been updated to where all refrigerant bottles will be painted a uniform gray/green color and the printed text on the bottle will be the sole means of identification.
This is because as the number of refrigerants expanded the colors became close enough to be easily confused, especially if a cylinder was faded or dirty.
Makes sense, it's better to have no color coding than color coding that contributes to confusion or errors.
Changes to Refrigerant Cylinder Color Code - Spotlight on Safety | MSA Corporate Blog
Reading Time: 4 minutesAre you aware of the changes to the refrigerant cylinder color code? Learn the background on the change; what the revision entails; and the importance of refrigerant safe-handling now.
9 years ago I thought I had my last jug. Now need another. Where did you order?
Just saying 11 is a fantastic degreaser especially with a 75° boiling point. Pre 1993
But seriously, I get what you mean. Now I have 134a, 404, r22, r410, r32, and r 454b. I use one set of digital manifold gauges that do all of them. A blast of nitrogen to purge for the next gas if needed. I only work for myself and only take on certain jobs. I’d like to weed r22, but there are still a lot of systems that I look after, including our lake house. The supply houses near me just about gave away the last of the 410 equipment last year. What really ***** is having to keep that stuff as inventory. I wish I had more space for it.I'm so glad I got out of HVAC when I did. I would not be able to stomach the situation that's developed.
Having to carry so many gas cylinders, plus separate manifolds and vacuum pumps and reclaim cylinders - just to minimize the risk of cross-contamination. Back then some guys had 4 gases with them (R22, R410a, R12, and R134a) - to do A/C's and refrigerators. Now - who knows? With all the generations of gases - plus all the potential blends - guys will probably have to start driving 18 wheelers to do service.
Those systems were so easy compared to newer refrigerants.Agreed!
I'd go back to 1990 era equipment with R-22 in a heartbeat!
I was just charged about $250/lb retail through a contractor. Looks like something worth having.
I don't like working on HVAC, this is the extreme end of the "learning curve" I'm afraid of...
I had a buddy who worked for Sears about 20 years ago. He carried R-12, R-22, and R-502, as he serviced reefers, reach-ins, home and commercial A/C. He had to be ready for everything as he never knew when he came in what route the computer was going to give him and what equipment he was gonna find. (I only did high temp HVAC all day at the time so I only had R-22 in my van.) Then the HFC's hit. He had to add R-410a and R-134a to his inventory. He had to get a new set of gauges (plus a spare set!), new vacuum pump, and another reclaimer. Had to keep the two generations separate. Just imagine the documentation he had to keep, and big bright labels on the rooftops with different generations of gases going side-by-side?
You have lead a very interesting life outside of your garage….
I like to think I'm a man of culture
